Title of Invention

"NOVEL FLAME RETARDING COMPOUNDS AND A COMPOSITION COMPRISING THE SAME"

Abstract Novel flame retarding compounds that comprise at least one sterically hindered nitroxyl, hydroxylamine or hydrocarbyloxyamine moiety and at least one conventional organohalogen or organophosphorus flame retardant moiety, represented by (I) where HA is independently of each other a sterically hindered nitroxyl, sterically hindered hydroxylamine or sterically hindered hydrocarbyloxyamine moiety, L is independently of each other a direct bond or chemical linking group, FRM is independently of each other an organohalogen or an organophosphorus flame reatardant moiety, and x, y and z are each independently greater than or equal to 1, are especially effective towards providing flame retardancy to organic polymer substrates. NOVEL FLAME RETARDING COMPOUNDS Abstract of the Disclosure Novel flame retarding compounds that comprise at least one sterically hindered nitroxyt, hydroxylamine or hydrocarbyloxyamine moiety and at least one conventional organohalogen or organophosphorus flame retardant moiety, represented by where HA is independently of each other a sterically hindered nitroxyl, sterically hindered hydroxylamine or sterically hindered hydrocarbyloxyamine moiety. L is independently of each other a direct bond or chemical linking group, FRM is independently of each other an organohalogen or an organophosphorus flame reatardant moiety, and X, y and z are each independently greater than or equal to 1, are especially effective towards providing flame retardancy to organic polymer substrates.
Full Text

NOVEL FLAME RETARDING COMPOUNDS
The instant invention pertains to novel flame retarding compounds that comprise at least one sterically hindered nitroxyl, hydroxylamine, hydrocarbyloxyamine moiety and at least one conventional organohalogen or organophosphorus flame retardant moiety.
Background of the Invention
U.S. Pat. No. 5,096,950 discloses the co-use of certain NOR (N-alkoxy) hindered amines with a brominated Sb203-containing flame retardant in polypropylene.
U.S. Pat. No. 5,393,812 discloses polyolefin compositions which are made flame retardant by a combination of a halogenated hydrocarbyl phosphate or phosphonate ester flame retardant in combination with a alkoxyamine functional hindered amine.
U.S. Pat. No. 5,844,026 discloses polyolefin compositions comprising certain NOR hindered amines and certain conventional flame retardants.
U.S. Pat. No. 6,117,995 discloses that certain N-alkoxy hindered amines may be used as flame retardants for organic polymers.
U,S. Pat. No. 6,271,377 discloses polyolefin compositions that comprise N-hydroxyaikoxy hindered amines and a halogenated flame retardant.
U.S. Pat. No. 6,309,987 and equivalent WO 99/54530 teach polyolefin non-woven flame retardant fabrics that comprise N-alkoxyamines.
A Revolutionarv UV Stable Flame Retardant System for Polvolefins - R. Srinivasan, A. Gupta and D. Horsey, Int. Conf. Addit. Polyolefins 1998, 69-83, teaches polyolefins comprising certain NOR hindered amines with halogen and phosphorus containing conventional flame retardants.

Advances in a Revolutionary Flame Retardant System for Polyolefins - R. Srinivasan, B. Rotzinger, Polyolefins 2000, Int. Cont Polyolefins 2000, 571 -561, teaches polyolefins comprising certain NOR hindered amines with brominated and phosphorus containing flame relardants.
N. Kaprlnidls and R. King, in an abstract posted on the Society of Plastics Engineers website, posted Sep. 2001, discuss the use of NOR hindered amines as flame retardants in polyolefins. The abstract is for a paper submitted to the Polymer Modifiers and Additives Division subsection to be presented at the Polyolefins 2002 conference in Houston, TX, Feb. 24,2002. The website is www.PMAD.org.
EP 0792911 A2, discloses polyolefin compositions that comprise alkoxyamine functional hindered amines and tris(triha!ogenopentyl) phosphate flame retardants.
WO 99/00450, copending U.S. application Nos. 09/502,239, filed Nov. 3,1999, and 09/714,717, filed Nov. 16. 2000, disclose the use of certain N-alkoxy hindered amines as flame retardants.
EP 1104766 discloses cross-linked phenoxyphosphazene compounds as flame retardants for synthetic resins.
The flame retardant (FR) market today is comprised of products which function to interfere with the combustion process by chemical and/or physical means. Mechanistically these FRs have been proposed to function during combustion of an article in either the gas phase, the condensed phase or both. The organohalogens are proposed to generate halogen species (e.g. HX) which interferes in the gas phase with free radical organic "fuel" from the polymer substrate. Synergists are proposed to react with HX to form additional chemical species which interfere with combustion in the gas phase, such as reaction of antimony oxide with HX to form antimony halide and water vapor. Antimony compounds such as antimony trioxide also act as radical scavengers forming antimony halides. Thus, they can inhibit the propagation of the fire.

Although antimony compounds are efficient in terms of cost performance, they recently raised concern because of the toxicity of the byproducts which are formed during combustion in the presence of a halogenated flame retardant. Antimony oxides often contain trace amounts of arsenic compounds which are suspected carcinogens. Because of these ecological concerns, there is a movement to replace antimony trioxide In the present commercial flame retardant applications. However, it is very difficult to find an effective synergist which is both environmentally friendly and efficient as far as cost performance is concerned.
Another reason to add flame retardant additives is to prevent dripping during the application of Uie fire. During combustion, parts of the polymer separate from the matrix in the shape of droplets. Often, the droplets are flaming and impose tremendous danger for fire spread. It is common to add fillers such as talc in large amounts to the polymer, with negative consequences on the mechanical properties. Other fillers sometimes used include calcium carbonate, magnesium carbonate, zinc borate, silicates, silicones, glass fibres, glass bulbs, asbestos, kaolin, mica, barium sulfate, calcium sulfate, metal oxides, hydrates and hydroxides such as zinc oxide, magnesium hydroxide, alumina trlhydrate, silica, calcium silicate, magnesium silicate.
It has been found that polymers with good flame retardant properties are prepared when novel compounds are added that comprise at least one sterically hindered nitroxyl, hydroxylamine or hydrocarbyloxyamine moiety and at least one conventional organohalogen or organophosphorus flame retardant moiety. With the use of these novel compounds, antimony compounds and fillers may be largely reduced or replaced. As the instant compounds are active as stabilizers, the polymer compositions of the invention are efficiently protected from the deleterious effects of light, oxygen and/or heat.

Detailed Disclosure
The instant invention pertains to novel fiame retardant compounds that comprise at least one sterically hindered nitroxyl, hydroxylamine or hydrocarbyloxyamine moiety and at least one conventional organohalogen or organophosphorus flame retardant moiety.

HA is independently of each other a sterically hindered nitroxyl, sterically hindered
hydroxylamine or sterically hindered hydrocarbyloxyamine moiety,
L is independently of each other a direct bond or chemical linking group,
FRM is independently of each other an organohalogen or an organophosphorus flame reatardant moiety, and
X, y and z are each independently greater than or equal to 1.
The present compounds that comprise at least one sterically hindered nitroxyl, hydroxylamine or hydrocarbyloxyamine moiety and at least one conventional organohalogen or organophosphorus flame retardant moiety are for example represented by formula I




Zi and Z2 are independently hydrogen or hydrocarbyl, or together form a hydrocarbylene group, or are independently -OR1, -OCOR,, -COOR,, -CONR,R£, -NRjCORa, -COR1 or-NR,R2,
R] and R2 are independently of each other hydrogen or hydrocarbyl, or R, and R2 together form a hydrocarbylene group,
E is oxyl, hydroxyl, alkoxy, cycloalkoxy, aralkoxy, aryloxy, -0-CO-OG, -0-Si(G)3, or -O-CHj-OG where G is selected from the group consisting of hydrogen, an aliphatic, araliphatic and aromatic moiety; or E is -0-T-(OH)b,
T is a straight or branched chain alkylene of 1 to 18 carbon atoms, cycloalkylene of 5 to 18 carbon atoms, cycloalkenylene of 5 to 18 carbon atoms, a straight or branched chain alkylene of 1 to 4 carbon atoms substituted by phenyl or by phenyl substituted by one or two alkyl groups of 1 to 4 carbon atoms,
b is 1, 2 or 3 with the proviso that b cannot exceed the number of carbon atoms In T, and when b is 2 or 3, each hydroxyl group is attached to a different carbon atoms of T, and
FRM is independently of each other an organohalogen or an organophosphorus flame retardant moiety.
E is for example oxyl, hydroxyl, alkoxy, cycloalkoxy or aralkoxy. For instance, E is methoxy, propoxy, cyclohexyloxy or octyloxy.
The terms x, y and z independently may be for example 1 to about 200,1 to about 100,1 to about 50, for instance 110 about 25,1 to about 10 or 1 to about 5, for example, each may be independently 1, 2, 3,4 or 5.
The term "hydrocarbyl group" broadly refers to a monovalent hydrocarbon group in which the valency is derived by abstraction of a hydrogen from a carbon atom. Hydrocarbyl includes for example aliphatics (straight and branched chain), cycloaliphatics, aromatics and mixed groups such as aralkyi, alkylaryl, alkynyl, cycloalkynyl. Hydrocarbyl includes such groups as alkyl, cycloalkyi, aryl, aralkyi, alkylaryl, alkenyl, and cycloalkenyl. A hydrocarbyl

may optionally be interrupted by carbonyl, carboxyl, amino, amido, thio, sulfoxide, sulfonyl and ether groups and/or may optionally be substituted by liydroxy, amino, amido, carboxyl and thio groups.
The term "hydrocarbylene" broadly refers to any divalent hydrocarbon in which both valencies derive by abstraction of hydrogens from carbon atoms. Included within the definition of hydrocarbylene are the same groups as indicated herein for hydrocarbyl, with of course, the extra valency, for example alkylene, alkenylene, arylene, alkylaryl, etc.
For the purposes of this invention, and as is understood in the art, the term "moiety" means a chemical functional group when it is part of a larger compound, for example when part of a compound of formula I, II or III. For example, the term "organohalogen or organophosphorus flame retardant moiety" refers to the conventional organic flame retardant portion(s) of the compounds of formulae I, II and III. Likewise the term "hindered hydrocarbyloxyamine moiety" refers to the portion of formulae I, M and III with hydrocarbyloxyamine additive functionality. For the purposes of this invention, the term moiety is not limited to a single active functionality. For example, a chemical group containing two (or more) hindered amine groups may be considered a single moiety.
Alkyl is a straight or branched chain of for example 1 to 24 carbon atoms, for instance, 1 to 18 carbon atoms or 1 to 12 carbon atoms, and is for example methyl, ethyl, n-propyl, n-butyl, sec-butyl, tert-butyl, n-hexyl, n-octyl, 2-ethylhexyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-hexadecyl or n-octadecyl.
CycloalkyI groups are for example of from 5 to 7 carbon atoms and include cyclopentyl and cyclohexyl; typical cycloalkenyl groups include cyclohexenyl.
AralkyI groups are for example of 7 to 9 carbon atoms and include benzyl, alpha-methyl-benzyl, alpha,alpha-dimethylbenzyl or phenethyl.
Aryl is tor instance phenyl, napthyl and biphenyl.
Alkoxy and aryloxy groups are -O-alkyI and -0-aryl with alkyl and aryl groups as defined above.

Halogen is for instance chloro and bromo.
The compounds of the present invention do not have any peroxy linkages. Lil Chemical Linking Groups L
The chemical linking groups L may for example be any divalent or polyvalent linking group. Linking groups L are for example esters, amides, and other common divalent or polyvalent groups, for example -0C0-, -C00-, -0-, -CONRi-, -NR,CO-, -CO-, -NRr, -S-, -SO-, SO2-, -CSO-, -COS-, -CSS-. triazinyl, and the like.
Ri is independently of each other hydrogen or a hydrocarbyl group.
Polyvalent is for example trivalent and tetravalent or greater. Triazinyl is a thvalent linking group.
Linking groups L may be a divalent hydrocarbylene group or polyvalent group that comprises one or more of the above ester, amide, etc., groups. The linking groups L may be terminated, interrupted or substituted by said groups.
The linking groups L may be a polymeric backbone, for example a polyamine, a polyglycol, a polyester or a polyamine/polytriazine polymer or oligomer. In this instance L is polyvalent.
A polymeric backbone (polyvalent backbone) defined herein may be for example any polymeric or oligomeric backbone known in the art as part of polymeric or oligomeric polymer additives. For example triazine-containing polymeric backbones that are part of commercial hindered amine compounds, for example Chimassorb® 944, CAS #71878-19-8. Other












Organohalogen and Organophosphorus Flame Retardant Moieties (FRIM)
The present FRM moieties are for example a hydrocarbyl group substituted by multiple halogen atoms, for example alkyl of 1 to 18 carbon atoms substituted by 1 to 37 bromine or chlorine atoms, cycloalkyi of 5 to 12 carbon atoms substituted by 1 to 23 bromine or chlorine atoms, aralkyi of 7 to 15 carbon atoms substituted by 1 to 5 bromine or chlorine atoms, or aryl of 6 to 12 carbon atoms substituted by 5 to 9 bromine or chlorine atoms.













The FRM moieties are for exampie based on well known commercial organohalogen, organophosphorus and melamine based fiame retardants. The term "based on" means potentiaily derived directly from or having the same active structure less the requisite number of valencies.
Oganohaiogen flame retardants are for example:
ChloroalkyI phosphate esters (ANTIBLAZE® AB-100, Albright & Wilson; FYROL® FR-2, Akzo Nobel),
polybrominated diphenyl oxide (DE-60F, Great Lakes Corp.),
decabromodiphenyl oxide (DBDPO; SAYTEX® 102E),
tris[3-bromo-2,2-bis(bromomethyl)propyl] phosphate (PB 370®, FMC Corp.),
bis(2,3-dibromopropyl ether) of bisphenol A (PE68),
brominated epoxy resin,
ethylene-bis(tetrabromophthalimjde) (SAYTEX® BT-93),
bis(hexachlorocyclopentadieno)cyclooctane (DECLORANE PLUS®),
chlorinated paraffins,
1,2-bis{tribromophenoxy)ethane (FF680),
tetrabromo-bisphenol A (SAYTEX® RBI 00),
ethylene bis-(dibromo-norbQrnanedicarboximid6) (SAYTEX® BN-451),
bis-( hexach lorocyclopentadieno) cyclooctane,
tris-{2,3-dibromopropyl)-isocyanurate, and
ethylene-bis-tetrabromophthalimide.
The organophophorus flame retardants are for example:
Tetraphenyl resorcinol diphosphite (FYROLFLEX® RDP, Akzo Nobel),
triphenyl phosphate,
ammonium polyphosphate (APP) or (HOSTAFLAM® AP750),
resorcinol diphosphate oligomer (RDP),
phosphazene flame retardants and
ethyfenediamine diphosphate (EDAP).
Melamine based flame retardants are for example:

melamine cyanurate, MEI_APUR®MC, melamine borate,
melamine phosphate, MELAPUR® P 46, melamine polyphosphate MELAPUR® 200 and melamine pyrophosphate.
The halogenated flame retardants useful in the present invention may be selected from organic aromatic halogenated compounds such as halogenated benzenes, biphenyls, phenols, ethers or esters thereof, bisphenols, diphenyloxides, aromatic carboxylic acids or poiyacids, anhydrides, amides or imides thereof; organic cycloaliphatic or potycycloaliphatic halogenated compounds; and organic aliphatic halogenated compounds such as halogenated paraffins, oligo- or polymers, alkylphosphates or alkylisocyanurates. These components are largely known in the art, see e.g. US patents Nos. 4,579,906 {e.g. col. 3, lines 30-41), 5,393,812; see also Plastics Additives Handbook, Ed. by H. Zweifel, 5*" Ed., Hanser Publ., Munich 2001, pp. 681-698.
Stericallv Hindered NJtroxvt. Hvdroxvlamine and Hvdrocarbvtoxyamine Moieties (HAl
The HA moieties are for example based on well known commercial hindered nitroxyl, hydroxylamine and hydrocarbyioxyamine stabilizers. The term "based on" means potentially derived directly from or having the same active structure less the requisite number of valencies.
Hindered hydrocarbyioxyamine stabilizers are welt known In the art, also known as N-alkoxy hindered amines and NOR hindered amines or NOR hindered amine light stabilizers or NOR HALS.
They are disclosed for example in U.S. Pat. Nos. 5,004,770, 5,204,473, 5,096,950, 5,300,544, 5,112,890, 5,124,378, 5,145.893, 5,216,156, 5,844.026, 6.117,995. 6,271.377, and U.S. application Ser. Nos. 09/505,529, filed Feb. 17. 2000, 09/794,710, filed Feb. 27,

2001, 09/714,717, filed Nov. 16, 2000, 09/502,239, filed Nov. 3, 1999 and 60/312,517, filed Aug. 15, 2001. The relevant disclosures of these patents and applications are hereby incorporated by reference.
U.S. Pat. No. 6,271,377, and U.S. application Ser. Nos. 09/505,529, filed Feb. 17, 2000, and 09/794,710, filed Feb. 27,2001, cited above disclose hindered hydroxyalkoxyamine stabilizers. For the purposes of this invention, the hindered hydroxyall Typical hindered nitroxyls include bis(1-oxyl-2,2,6,6-tetramethylplperidin-4-yl} sebacate, 4-hydroxy-1 -oxyl-2,2,6,6-tetramethylpiperidine, 4-ethoxy-1 -oxy 1-2,2,6.6-tetramethylpiperidine, 4-propoxy-1 -oxyl-2,2,6,6-tetramethylpiperidine, 4-acetamido-1 -oxyl-2,2,6,6-tetramethylpiperidine, 1 -oxyl-2,2,6,6-tetramethylpiperidine, 1 -oxyl-2,2,6,6-tetramethylpiperidin-4-one, 1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl acetate, 1-oxyl-2,2,6,6-tetramethylpiperidJn-4-yl 2-ethylhexanoate, 1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl stearate, 1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl benzoate, 1-Dxyl-2,2,6,6-tetramethylpiperidin-4-yl 4-t-butyl'benzoate, bis(1-Qxyi-2,2,6,6-tetramethylpiperidin-4-yl) succinate, bis(l-oxyl-2,2,6,6-tetramethylpiperidin-4-yl) adipate, bis(1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl) n-butylmalonate, bis(1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl) phthalate, bis(1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl) isophthalate, bis(1 -oxyl-2,2,6,6-tetramethylpiperidin-4-yl) terephthalate, bis(1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl) hexahydroterephthalate, N,N'-bis(1-oxyl-2,2,6,6-tetramethylp(per(din-4-yl)ad(pamide, N-{1-oxyl-2,2,6,6-tetramethylpiper(d(n-4-yl)caprolactam, N-(1 -oxyl-2,2,6,6-tetramethylpiperidin-4-yl)dodecylsuccinimide, 2,4,6-tris-[N-butyl-N-(1 -oxyl-2,2,6,6-tetramethylpiperidin-4-yl)l-s-triazine, 4,4'-ethylenebis(1 -oxyl-2,2,6,6-tetramethylpiperazin-3-one), 2-oxyl-1,1,3,3-tetramethyl-2-lsobenzazole, 1-oxyl-2,2,5,5-tetramethylpyrrolidine, and N,N-bis-(1,1,3,3-tetramethylbutyl)nitroxide.
Nitroxyl stabilizers are for example bis{1-oxyl-2,2,6,6-tetramethyipiperidin-4-yl) sebacate, 4-hydroxy-1-oxyl-2,2,6,6-tetramethylpiperidine, 4-ettioxy-1-oxyl-2,2,6,6-tetramethylpiperidine, 4-propoxy-l -oxyl-2,2,e,6-tetramethytpip6ridine, 4-acetamido-1 -oxyl-

2,2,6,6-tetramethylpipericline, 1-oxyl-2,2,6,6-tetramethylpiperidine, and 1-oxyl-2,2,6,6-tetramethy I p iperidi n-4-one.
A specific embodiment is wiiere the nltroxyl stabilizers are b(s(t-oxyl-2,2,6,6-tetramethylpiperidin-4-yl) sebacate and 4-hydroxy-1-oxy!-2,2,6,6-tetramethylpiperidine.
Hydroxylamine stabilizers are for example those disclosed in U.S. Patent Nos. 4,590,231, 4,668,721, 4,691,015, 4,831,134, 5,006,577, and 5,064,883, the relevant parts of which are incorporated herein by reference.
Specific examples of suitable compounds that the present HA moieti'es may be based on include:
(a) the reaction product of 2,4-bis[(1-cyclohexyloxy-2,2,6,6-piperidin-4-yl)butylamino]-6-chloro-s-triazine with N,N'-bis{3-aminopropyl)ethylenediamine) [CAS Reg. IMo. 191680-81-6];
(b) 1-cyclohexyloxy-2,2,6,6-tetramethyl-4-octadeoylaminopip6ridine;
(c) bis(1-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl) sebacate;
(d) 2,4-bis[(1-cyc(ohexy[oxy-2,2,6,6-tetramethylpip6rid!n-4-y()buty(amino]-6-(2-hydroxyethylamino-s-triazine;
(e) bis(1-cyclohexyloxy-2,2,6.6-tetramethylpiperidin-4-yl) adipate;
(h) 2,4-bis[{1-cyclohexyloxy-2,2,6,6-piperidin-4-yl)butylaminol-6-chloro-s-triazine; (i) 1-(2-hydroxy-2-methylpropoxy)-4-hydroxy-2,2,6,6-tetramethylpiperidine; (j) 1-(2-hydroxy-2-methylpropoxy)-4-oxo-2,2,6,6-tetramethylpiper)dine; (k) 1-(2-hydroxy-2-methylpropoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine; (1) bis(1 -(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl) sebacate; (m) bis(1 -(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl) adipate; (n) 2,4-bis{N-[1-{2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl]-N-butylamino}-6-{2-hydroxyethylamino)-s-triazine; and (o) the compound of formula








Advantageously, the compositions of the invention may further contain a conventional flame retardant not bound to a hindered amine moiety, for example at least one compound selected from the group consisting of the organohalogen and the organophosphorus flame retardants. The conventional flame retardants are as described above.
Components A and B and optional further components may comprise one or a mixture of more than one chemical species.
Advantageously, present composition contains only minor amounts of antimony compounds such as 86203, e.g. less than about 1 %, for instance less than about 0. t % by
weight of the polymer component A; for example, the present compositions are essentially free of antimony.
Flame-retardant fillers are not required in order to improve the flame retardant properties and achieve a higher rating, e.g. in the UL-94 burning test (infra). Consequently, the compositions of the present invention may contain only minor amounts of flame-retardant fillers, e.g. less than about 3%, for instance less than about 1%, for example less than about 0.1 % by weight of the polymer component A; for example, the present compositions are essentially free of flame-retardant fillers.
Flame-retardant fillers are known in the art and are selected from the group consisting of magnesium hydroxide, alumina trihydrate and zinc borate. Flame-retardant fillers are inorganic compounds employed for flame-retardant properties, and at higii enough levels to be considered "filler".
If conventional fillers such as talc, calcium carbonate and the like are normally employed for instance for flow properties in order to reduce the spread of flaming droplets (not flame-retardant per se), such conventional fillers may also be reduced with the use of the present compositions. For instance, the present compositions may contain only minor amounts of conventional fillers, for example less than about 3%, for instance less than 1%,

for example less than about 0.1 % by weight of the polymer component A; for example, the present compositions are essentially free of conventional fillers.
Further, the present invention allows for conventional fillers to take the place of more expensive flame-retardant fillers.
The polymeric substrate of component A is any of a wide variety of polymeric types including polyolefins, polystyrsnics, and PVC. For example, the polymer substrate may be selected from the group of resins consisting of the polyolefins, the thermoplastic olefins, styrenic polymers and copolymers, ABS and polymers which contain hetero atoms, double bonds or aromatic rings. Specific embodiments are where component A is polypropylene, polyethylene, thermoplastic olefin (TPO), ABS or high impact polystyrene.
For example, the polymer substrate is selected from the group of resins consisting of the polyolefins, the thermoplastic olefins, styrenic polymers and copolymers, and ABS.
Another embodiment of the present invention is where the polymer substrate is selected from the group consisting of polypropylene, polyethylene, thermoplastic olefin (TPO), ABS and high impact polystyrene.
For instance, the polymer substrate is poiypropylene, polyethylene or thermoplastic olefin (TPO). Organic polymers of component A are for example thermoplastic polymers such as polyolefins like polyethylene, polypropylene or copolymers thereof. The thermoplastic polymer is for example polypropylene.
Further examples for organic polymers (component A) are:
1. Polymers of monoolefins and diolefins, for example polypropylene, polyisobutylene, po-lybut-1-ene, poly-4-methylpent-1-ene, polyvinylcyclohexane, polyisoprene or polybutadiene, as well as polymers of cycloolefins, for instance of cyclopentene or norbornene, polyethylene {which optionally can be crosslinked), for example high density polyethylene (HDPE), high density and high molecular weight polyethylene (HDPE-HMW), high density and ultrahigh molecular weight polyethylene {HDPE-UHMW), medium density polyethylene (MDPE), low

density polyethylene (LDPE), linear low density polyethylene {LLDPE), (VLDPE) and (ULDPE).
Polyoleflns, i.e. tlie polymers of monoolefins exemplified in the preceding paragraph, for example polyethylene and polypropylene, can be prepared by different, and especially by the following, methods:
a) radical polymerisation (normally under high pressure and at elevated temperature).
b) catalytic polymerisation using a catalyst that normally contains one or more than one
metal of groups IVb, Vb, VIb or VIII of the Periodic Table. These metals usually have
one or more than one ligand, typically oxides, halides, alcoholates, esters, ethers,
amines, alkyls, alkenyls and/or aryts that may be either n- or G-coordinated. These
metal complexes may be in the free form or fixed on substrates, typically on
activated magnesium chloride, titanium(lll) chloride, alumina or silicon oxide. These
catali^ts may be soluble or insoluble in the polymerisation medium. The catalysts
can be used by themselves in the polymerisation or further activators may be used,
typically metal alkyls, metal hydrides, metal alkyl halides, metal alkyl oxides or metal
alkyloxanes, said metals being elements of groups la, Ha and/or Ilia of the Periodic
Table. The activators may be modified conveniently with further ester, ether, amine
or stiyi ether groups. These catalyst systems are usually termed Phillips, Standard
Oil Indiana, Ziegler (-Natta), TNZ (DuPont), metallocene or single site catalysts
(SSC).
2. Mixtures of the polymers mentioned under 1), for example mixtures of polypropylene with polyisobutylene, polypropylene with polyethylene (for example PP/HDPE, PP/LDPE) and mixtures of different types of polyethylene (for example LDPE/HDPE).
3. Copolymers of monoolefins and diolefins with each other or with other vinyl monomers, for example ethylene/propylene copolymers, linear low density polyethylene (LLDPE) and mixtures thereof with low density polyethylene (LDPE), propylene/buM-ene copolymers, propylene/isobutylene copolymers, ethylene/but-1-ene copolymers, ethylene/hexene copo¬lymers, ethylene/methyIpentene copolymers, ethylene/heptene copolymers, ethylene/octene copolymers, ethylene/vinylcyclohexane copolymers, ethylene/cycloolefin copolymers (e.g.

ethylene/norbornene like COC), ethylene/1 -olefins copolymers, where the 1 -olefin is gene¬rated in-situ; propylene/butadiene copolymers, isobutyiene/isoprene copolymers, ethylene/vi-nylcyclohexene copolymers, ethylene/alkyi acrylate copolymers, ethylene/alkyi methacrylate copolymers, ethylene/vinyl acetate copolymers or ethylene/acrylic acid copolymers and their salts (ionomers) as well as terpolymers of ethylene with propylene and a diene such as hexadiene, dicyctopentadiene or ethylidene-norbornene; and mixtures of such copolymers with one another and with polymers mentioned in 1) above, for example polypropylene/ethy-lene-propylene copolymers, LDPE/ethylene-vinyl acetate copolymers (EVA), LDPE/ethylene-acrylic acid copolymers (EAA), LLDPE/EVA, LLDPE/EAA and alternating or random polyal-kylene/carbon monoxide copolymers and mixtures thereof with other polymers, for example polyamides.
4. Hydrocarbon resins (for example Cs-Cg) including hydrogenated modifications thereof
(e.g. tackifiers) and mixtures of polyalkylenes and starch.
Homopolymers and copolymers from 1.) - 4.) may have any stereostructure including syndio-tactic, isotactic, hemi-isotactic or atactic; for example atactic polymers. Slereoblock polymers are also included.
5. Polystyrene, poly(p-methylstyrene), poly(a-methylstyrene).
6. Aromatic homopolymers and copolymers derived from vinyl aromatic monomers including styrene, a-methylstyrene, all isomers of vinyl toluene, especially p-vinyltoluene, all isomers of ethyl styrene, propyl styrene, vinyl biphenyl, vinyl naphthalene, and vinyl anthracene, and mixtures thereof. Homopolymers and copolymers may have any stereostructure including syndiotactic, isotactic, hemi-isotactic or atactic; for example atactic polymers. Stereoblock polymers are also included.
6a. Copolymers including aforementioned vinyl aromatic monomers and comonomers selec¬ted from ethylene, propylene, dienes, nitriles, acids, maleic anhydrides, maleimides, vinyl acetate and vinyl chloride or acrylic derivatives and mixtures thereof, for example styrene/bu-tadiene, styrene/acrylonitrile, styrene/ethylene (interpolymers), styrene/alkyi methacrylate, styrene/butadiene/alkyi acrylate, styrene/butadiene/alkyi methacrylate, styrene/maleic anhy¬dride, styrene/acrylonitrile/methyl acrylate; mixtures of high impact strength of styrene copo-

lymers and another polymer, for example a poiyacrylate, a diene polymer or an ethylene/pro-pylene/diene terpolymer; and block copolymers of styrene such as styrene/butadiene/sty-rene, styrene/isoprene/styrene, styrene/ethylene/butylene/styrene or styrene/ethylene/propy-lene/styrene.
6b. Hydrogenated aromatic polymers derived from hydrogenation of polymers mentioned under 6.), especially including polycyclohexylethylene (PCHE) prepared by hydrogenating atactic polystyrene, often referred to as polyvinylcyclohexane (PVCH).
6c. Hydrogenated aromatic polymers derived from hydrogenation of polymers mentioned under 6a.).
Homopolymers and copolymers may have any stereostructure including syndiotactic, isotac-tic, hemi-isotactic or atactic; for example atactic polymers. Stereoblock polymers are also included.
7. Graft copolymers of vinyl aromatic monomers such as styrene or a-methylstyrene, for example styrene on potybutadiene, styrene on polybutadiene-styrene or polybutadiene-acry-lonitrile copolymers; styrene and acrylonitrile (or methacrylonitrile) on polybutadlene; styrene, acrylonitrile and methyl methacrylate on polybutadlene; styrene and maleic anhydride on potybutadiene; styrene, acrylonitrile and maleic anhydride or maleimide on polybutadlene; styrene and maleimide on polybutadlene; styrene and alkyl acrylates or methacrylates on polybutadlene; styrene and acrylonitrile on etbylene/propyiene/diene terpolymers; styrene and acrylonitrile on polyalkyi acrylates or polyalkyi methacrylates, styrene and acrylonitrile on acrylate/butadiene copolymers, as well as mixtures thereof with the copolymers listed under 6), for example the copolymer mixtures known as ABS, MBS, ASA or AES polymers.
8. Halogen-containing polymers such as polychloroprene, chlorinated rubbers, chlorinated and bromlnated copolymer of isobutylene-isoprene (halobutyl rubber), chlorinated or sulfo-chlorinated polyethylene, copolymers of ethylene and chlorinated ethylene, epichlorohydrin homo- and copolymers, especially polymers of halogen-containing vinyl compounds, for example polyvinyl chloride, polyvinylidene chloride, polyvinyl fluoride, polyvinylIdene fluoride, as well as copolymers thereof such as vinyl chlcride/vlnylldene chloride, vinyl chloride/vinyl acetate or vinylidene chloride/vinyl acetate copolymers.

9. Polymers derived from a,p-unsaturated acids and derivatives thereof such as pofyacty-
lates and polymethacrylates; polymethyl methacrylates, polyacrylamides and polyacryloni-
triles, impact-modified witli butyl acryiate.
10. Copolymers of the monomers mentioned under 9) with each other or with other unsatu¬rated monomers, for example acrylonitrile/ butadiene copolymers, acrylonitrileyalkyl acryiate copolymers, acrylonitrile/alkoxyalkyi acryiate or acrylonitrile/vinyl halide copolymers or acry¬lonitrile/ alkyl methacrylate/butadiene terpolymers.
11. Polymers derived from unsaturated alcohols and amines or the acyl derivatives or ace-tals thereof, for example polyvinyl alcohol, polyvinyl acetate, polyvinyl stearate, polyvinyl benzoate, polyvinyl maleate, polyvinyl butyral, polyallyl phthalate or polyallyl melamlne; as well as their copolymers with olefins mentioned in 1) above.
12. Homopolymers and copolymers of cyclic ethers such as polyalkylene glycols, polyethy¬lene oxide, polypropylene oxide or copolymers thereof with bisglycidyl ethers.
13. Polyacetais such as polyoxymethy\ene and those polyoxymethylenes which contain ethylene oxide as a comonomer; polyacetais modified with thermoplastic polyurethanes, acrylates or MBS.
14. Polyphenylene oxides and sulfides, and mixtures of polyphenylene oxides with styrene polymers or polyamides.
15. Polyurethanes derived from hydroxyl-tenninated polyethers, polyesters or polybutadi-enes on the one hand and aliphatic or aromatic polyisocyanates on the other, as well as precursors thereof.
16. Polyamides and copolyamides derived from diamines and dicarboxylic acids and/or from aminocarboxylic acids or the corresponding lactams, for example polyamide 4, polyamide 6, polyamide 6/6, 6/10, 6/9, 6/12, 4/6, 12/12, polyamide 11, polyamide 12, aromatic polyamides starting from m-xylene diamine and adipic acid; polyamides prepared from hexamethylenediamine and isophthalic or/and terephthalic acid and with or without an ela-

stomer as modifier, for example poly-2,4,4,-trimethy!hexamethylene terephthalamide or poly-m-phenylene isophthalamide; and also block copolymers of the aforementioned polyamides with polyolefins, olefin copolymers, ionomers or chemically bonded or grafted elastomers; or with polyethers, e.g. with polyethylene glycol, polypropylene glycol or polytetramethylene glycol; as well as polyamides or copolyamides modified with EPDM or ABS; and polyamides condensed during processing (RIM polyamide systems).
17. Polyureas, polyimides, polyamide-imides, polyetherimids, polyesterimids, polyhydantoins and polybenzimidazotes.
18. Polyesters derived from dicarboxylic acids and dtols and/or from hydroxycarboxylic acids or the corresponding lactones, for example polyethylene terephthalate, polybutylene tereph-thalate, poly-1,4-dimethylolcyclohexane terephthalate, polyalkytene naphthalate (PAN) and poly hydroxy ben zoates, as well as block copolyether esters derived from hydroxy l-terminated polyethers; and also polyesters modified with polycarbonates or MBS.
19. Polycarbonates and polyester carbonates.
20. Polyketones.
21. Polysulfones, polyether sulfones and polyether ketones.
22. Blends of the aforementioned polymers (polyblends), for example PP/EPDM, Poly-amide/EPDM or ABS, PVC/EVA, PVC/ABS, PVC/MBS, PC/ABS, PBTP/ABS, PC/ASA, PC/PBT, PVC/CPE, PVC/acrylates, POM/thermoplastic PUR, PC/thermoplastic PUR, POM/acrylate, POM/MBS, PPO/HIPS, PPO/PA 6.6 and copolymers, PA/HDPE. PA/PP, PA/PPO, PBT/PC/ABS or PBT/PET/PC.
Component B is advantageously contained in the compositions of the invention in an amount from about 0.01 to about 20% by weight based on the polymeric substrate A; for example about 0.1 to about 10%, for example from about 0.25 to about 8% by weight; for instance from about 0.5 to about 3% by weight. For example about 0.05,1,1.5, 2, 3, 4 or 5 weight percent.

If a further conventional flame retardant is present in tine compositions of this invention, it is advantageously contained in an amount from about 0.5 to about 45% by weight of the polymeric substrate A; for instance about 3 to about 40%; for example about 5 to about 35% by weight of component A.
The ratio (parts by weight) of the compounds of this invention to further oonventiona! flame retardants is for example between about 1:5 to about 1:200, for instance from about 1;50 to about 1:100, or about 1:10 to about 1:25. For example the ratio of component Bto further conventional flame retardants is from about 1:10 to about 1:200, fronn about 1:25 to about 1:200, from about 1:50 to about 1:200 or from about 1:100 to about 1:200. For example, the weight ratio of component B to further conventional flame retardants is from about 1:5 to about 1:100, from about 1:5 to about 1:50, from about 1:5 to about 1:25, or from about 1:5 to about 1:10.
The amount of the further conventional flame retardants employed also depends on the effectiveness of the specific compound(s), the polymer and the specific application type; for example, an amount of 5 to 15 % by weight of the compound tris[3-bromo-2,2-bis(bromomethyl}propyl] phosphate may be as efficient as an amount of 30 to 45 % by weight of the compound decabromodiphenyl oxide in respect of the flame retardancy of the final composition.
The resulting stabilized compositions of the invention may optionally also contain various conventional additives, for example in amounts from about 0.01 to about 10%, for instance from about 0.025 to about 4%, for example from about 0.1 to about 2% by weight of component A, such as the materials listed below, or mixtures thereof.
1 ■ Antioxidants
1.1. Alkylated monophenols. for example 2,6-dl-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-di-
methylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 2,6-di-tert-bu-tyl-4-isobutylphenol,2,6-dicyclopentyl-4-methylphenol, 2-(a-methylcyclohexyl)-4,6-dimethyl-phenol, 2,6-dioctadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol, 2,6-di-tert-butyl-4-meth-oxymethylphenol, nonylphenols which are linear or branched in the side chains, for example,

2,6-di-nonyl-4-methylphenol, 2,4-dimethyl-6-(1'-methyIundec-1'-yl)phenol, 2,4-dimethyl-6-(1'-methylheptadec-l'-yl)phenol, 2,4-dimethyl-6-(1'-methyltridec-1'-yt)phenol and mixtures there¬of.
1.2. Alkylthiomethylphenois. for example 2,4-dioctylthiomethyl-6-tert-butyiphenol, 2,4-dioctyl-thiomethyl-6-methylphenol,2,4-dioctylthiomethyl-6-ethylphenol, 2,6-di-dodecylthiom6thyl-4-nonylphenol.
1.3. HvdroQuinones and alkylated hydroquinones. for example 2,6-di-tert-butyl-4-metfioxy-pfienol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-dipfienyl-4-octade-cyloxyphenol, 2,6-di-tert-butylhydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-bu-tyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydrDxyphenyl stearate, bis-(3,5-di-tert-butyl-4-hy-droxyphenyl) adipate.
1.4. Tocopherols, for example a-tocopherol, p-tocopherol, y-tocopherol, 5-tocopherol and mixtures thereof (Vitamin E).
1.5. Hvdroxvlated thJodiphenyi ethers, for example 2,2'-thiobis(6-tert-butyl-4-methylpfienol},
2,2'-lhiobis(4-octylphenol), 4,4'-thiobis(6-tert-butyl-3-methylphenol), 4,4'-thiobis(6-tert-butyl-2-methylphenol), 4,4'-thiobis-(3,6-di-sec-amylphenol), 4,4'-bis(2,6-dimetfiyl-4-fiydroxyphe-nyOdisulfide.
1.6. Alkvlidenebisphenols. for example 2,2'-methylenebis(6-tert-butyl-4-methylphenol), 2,2'-
metfiylenebis(6-tert-butyl-4-ethy I phenol), 2,2'-methylenebis[4-methyl-6-(a-methylcyclohexyl)-
phenol], 2,2'-methylenebis(4-methyl-6-cyclohexylphenol), 2,2'-methylenebis(6-nonyl-4-me-
thylphenol), 2,2'-methylenebis(4,6-di-tert-butylphenol), 2,2'-ethylidenebis(4,6-di-tert-butylphe-
nol), 2,2'-ethy!idenebis(6-tert-butyl-4-isobuty|phenol), 2,2'-methylenebis[6-(a-methylben2yl)-
4-nonylph8nol], 2,2'-methylenebis[6-(a,a-dimethylbenzyl)-4-nonylphenol], 4,4'-methylenebis-
(2,6-di-tert-butylphenol), 4,4'-methylenebls(6-tert-butyl-2-m8thy!phenol), 1,1 -bis(5-terl-butyl-
4-hydroxy-2-methylphenyl)butane, 2,6-bis{3-tert-butyl-5-methyl-2-hydroxybenzyl)-4-methyl-
phenol, l,l,3-tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 1,1-bis(5-tert-butyl-4-hydr-
oxy-2-methyl-phenyl)-3-n-dodecylmercaptobutane, ethylene glycol bis[3,3-bis{3'-tert-butyl-4'-
hydroxyphenyl)butyrate], bis(3-tert-butyl-4-hydroxy-5-methyl-phenyl)dicyclopentadlene, bis[2-
(3'-tert-butyl-2*-hydroxy-5'-methylbenzyl)-6-tert-butyl-4-methylphenyl]terephthalate, 1,1 -bis-

(3,5-dimethyl-2-hydroxyphenyl)butane, 2,2-bis-(3,5-di-tert-butyi-4-hydroxyphenyl)propane, 2,2-bis-(5-tei1-butyl-4-hydroxy2-methylphenyi)-4-n-dodecylmercaptobutane, 1,1,5,5-tetra-{5-tert-butyl-4-hydroxy-2-methylphenyl)pentane.
1.7. 0-, N- and S-benzyl compounds, for example 3,5,3',5'-tetra-tert-butyi-4,4'-dihydroxydi-benzyl ether, octadecyl-4-hydroxy-3,5-dimethylbenzylmercaptoacetate, tridecyl-4-hydroxy-3,5-di-tert-butylbenzylmercaptoacetate, tris(3,5-di-tert-butyl-4-hydroxybenzyl)amine, bts(4-tert-butyl-3-hydroxy-2.6-dimethylbenzyl}dithioterephthalate, bis(3,5-dt-tert-butyl-4-hydroxy-benzyOsulfide, isooctyl-3,5-di-t6rt-butyl-4-hydroxybenzylmercaptoacetate.
1.8. Hydrpxybenzylated malonates. for example dioctadecyl-2,2-bis-(3,5-di-tert-butyl-2-hy-droxybenzyO-malonate, di-octadecyl-2-(3-ter1-butyl-4-hydroxy-5-methylbenzyl)-malonate, di-dodecylmercaptoethyl-2,2-bis-(3,5-di-tert-butyl-4-hydroxybenzyl)malonate, bis[4-(1,1,3,3-te-tramethylbutyl)phenyl]-2,2-bts(3,5-di-tert-butyl-4-hydroxybenzyl)ma!onate.
1.9. Aromatic hvdroxybenzvl compounds, for example 1,3,5-tris-(3,5-di-tert-butyl-4-hydroxy-benzyl}-2,4,6-trimethylbenzene, 1,4-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-2,3,5,6-tetrame-thylbenzene, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)phenol.

1.10. Triazine Compounds, for example 2,4-bis(ocly!mercapto)-6-(3,5-dMert-bulyl-4-hydroxy-anllino)-1,3,5-triazine, 2-octylmerGapto-4,6-bis(3,5-di-tert-butyi-4-hydroxyanilino)-1,3,5-tri-azine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,3,5-triazine, 2,4,6-tris-{3,5-di-tert-butyl-4-hydroxyphenoxy)-1,2,3-triazine, 1,3,5-tris-(3,5-di-tert-butyl-4-hydroxyben-zyl)isocyanurate, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, 2,4,6-tris-(3,5-dl-tert-butyl-4-hydroxyphenylethyt)-1,3,5-triazine, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxy-phenylpropionyl)-hexahydrD-1,3,5-triazine, 1,3,5-tris(3,5-dicyclohexyl-4-hydroxy benzyl) iso-cyanurate.
1.11. Benzylphosphonates. for example d;methyl-2,5-di-tert-butyl-4-hydroxyben2ylphospho-nate, diethyl-3,5-di-tert-butyl-4-hydrQxybenzylphosphonate, diQctadecyl3,5-di-tert-butyl-4-hy-droxybenzyiphosphonate, dioctadecyl-5-tert-butyl-4-hydroxy-3-methyl ben zylphosphonate, the calcium salt of the monoethyl ester of 3,5-di-t6rt-butyl-4-hydroxybenzylphosphonic acid.

1.12. Acvlaminophenols, for example 4-hydroxylauranilide, 4-hydroxystearanilJde, octy) N-(3,5-di-tert-butyl-4-hydroxyphenyl)carbamate.
1.13. Esters of p-(3,5-di-tert-butvi-4-hvdroxvphenvhpropionic acid with mono- or polyhydric alcohols, e.g. with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethyiene glycol, diethy-lene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl) isocyanurate, N,N'-bis(hy-droxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylol-propane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.
1.14. Esters of B-f5-tert-butvl-4-hvdroxv-3-methvlphenvl)propionic acid with mono- or poly¬hydric alcohols, e.g. with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanedi¬ol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethyiene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl) isocyanurate, N,N'-bis-(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethyl-olpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.
1.15. Esters of B-f3.5-dicyclohexvl-4-hvdroxvphenvhpropionio acid with mono- or polyhydric alcohols, e.g. with methanol, ethanol, octanoi, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethyiene glycol, diethylene glycol, tri¬ethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)ox-amide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hy-droxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.
1.16. Esters of 3,5-di-tert-butvl-4-hvdroxvphenvl acetic acid with mono- or polyhydric alco¬hols, e.g. with methanol, ethanol, octanoi, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethyiene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)ox-amide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hy-droxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.
1.17. Amides of B-f3.5-di-tert-butvl-4-hvdroxvp he nvl^ prop ionic acid e.g. N,N'-bis{3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamide, N,N'-bis(3,5-di-tert-butyl-4-hydroxy-phenylpropionyl)trimethylenediamide, N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)-

hydrazide, N,N'-bis[2-(3-[3,5-di-tert-butyt-4-hydroxyphenyl]propionyloxy)ethyl]oxamide (Nau-gard®XL-1 supplied by Uniroyal).
1.18- Ascorbic acid (vitamin C)
1.19. Aminic antioxidants, for exampie N,N'-di-isopropyl-p-plienylenediamine, N,N'-di-sec-bu-tyi-p-phenyienediamine, N,N'-bis{1,4-dimethylpentyl)-p-phenylenediamine, N,N'-bis(1-ethyl-3-metliylpentyl)-p-phenylenediamine, N,N'-bis(1-metlnyiheptyl)-p-phenylenediamin6, N,N'-dicy-clofiexyi-p-phenylenediamine, N,N'-diphenyl-p-plnenyienediamine, N,N'-bis{2-naphthyi)-p-phenyienediamine, N-isopropyl-N'-plnenyi-p-phenylenediamine, N-(1,3-dimethylbutyi)-N'-phe-nyl-p-phenylenediamine, N-(1 -metlnylheptyl)-N'-phenyi-p-phenyienediamine, N-cycioliexyl-N'-pfienyl-p-phen!enediamine, 4-{p-toiuenesulfamoyi)diphenyiamine, N,N'-dimetliyl-N,N'-di-sec-butyl-p-phenyienediamine, diphenyiamine, N-allyidiphenyiamine, 4-isopropoxydiphenylamine, N-phenyl-1 -naphthylamine, N-(4-tert-octylphenyi)-1 -naplnthyiamine, N-pheny!-2-naphthylamine, octyiated diphenyiamine, for example p,p'-di-tert-octyldiphenylamine, 4-n-butylaminopiienol, 4-butyrylaminoplnenol, 4-nonanoylaminoplienol, 4-dodecanoylaminopiienol, 4-octadecanoylaminophenol, bis{4-methoxypfn6nyl)amine, 2,6-di-tert-butyl-4-dimethylaminometiiy!phenol, 2,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylmethane, N,N,N',N'-tetramethyl-4,4'-diaminodiphenylmethane, 1.2-bis[(2-methylphenyl)amino]ethane, 1,2-bis(pli8nylamino)propane, (o-toly!)biguanide, bis[4-(1',3"-dimethylbutyl)phenyl]amine, tert-octylated N-phenyl-1-naphthylamine, a mixture of mono-and dialkylated tert-butyl/tert-octyidiphenyiamines, a mixture of mono- and dialkylated nonyldiphenylamines, a mixture of mono- and dialkylated dodecyldiphenylamines, a mixture of mono- and dialkylated isopropyl/isohexyldiphenylamines, a mixture of mono- und dialkylated tert-butyldiphenylamines, 2,3-dihydro-3,3-dimethyl-4H-1,4-benzothiazine, phenothiazine, a mixture of mono- und dialkylated tert-butyl/tert-octylphenothiazines, a mixture of mono- und dialkylated tert-octyi-phenothiazines, N-allylphenothiazin, N,N,N',N'-tetraphenyl-1,4-diaminobut-2-ene, N,N-bis(2,2,6,6-tetramethyl-piperid-4-yl-hexamethylenediamine, bis(2,2,6,6-tetramethylpiperld-4-yl)sebacate, 2,2,6,6-tetramethylpiperidin-4-one, 2,2,6,6-tetramethylpiperidin-4-ol.

2. UV absorbers and light slabilisers
2.1. 2-(2'-Hvdroxvphenvl)benzotriazoles. for example 2-(2'-hydroxy-5'-nnethy I phenyl )-benzo-
triazole, 2-(3',5'-di-tert-buty!-2'-hydroxyphenyl)benzotriazole, 2-{5'-tert-butyl-2'-hydroxyphe-
nyl)benzotriazole, 2-{2'-hydroxy-5'-(1,1,3,3-tetram6thylbutyl}phenyl)benzotriazol6, 2-(3',5'-dr-
tert-butyl-2"-hydroxyphenyl)-5-chloro-benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-methylphe-
nyl)-5-chloro-benzotriazole, 2-{3'-sec-butyl-5'-tert-butyl-2'-hydroxyphenyl)benzotrlazole, 2-(2'-
hydroxy-4'-octyloxyphenyl)benzotrrazole, 2-(3',5'-di-tert-amyl-2'-hydroxyphenyl)benzotriazole,
2-(3',5'-bis-(a,a-dimethylbenzyl)-2'-hydroxyphenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-
5'-(2-octyloxycarbonylethyl)phenyl)-5-chloro-benzotriazole, 2-{3'-tert-butyl-5'-[2-(2-ethylhexyl-
oxy)-carbonylethyl]-2'-hydroxyphenyl)-5-chloro-benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-
m6thoxycarbonylethyl)phenyl)-5-chloro-benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-meth-
oxycarbonylethyl)phenyl)benzotriazoie, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonyl-
ethyl)phenyl)benzotriazole, 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxy-
phenyljbenzotriazole, 2-(3'-dodecyl-2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(3'-tert-butyl-
2'-hydroxy-5'-(2-isooctyloxycarbonylethyl)phenylbenzotriazole, 2,2'-methylene-bis[4-(1,1,3,3-
tetramethylbutyl)-6-benzotrla2ole-2-ylphenol]; the transesterification product of 2-[3'-tert'bu-
tyl-5'-(2-methoxycarbony!ethyl)-2'-hydroxyphenyl]-2H-benzotrlazole with polyethylene glycol
300; [R-CHjCHg-COO-CH^CH^-^ where R = 3'-tert-butyl-4'-hydroxy-5'-2H-benzotriazol-
2-ylphenyl, 2-[2'-hydroxy-3'-(a,a-dimethyibenzyl)-5"-(1,1,3,3-tetramethylbutyl)-phenyl]-benzotriazole; 2-[2'-hydroxy-3'-(1,1,3,3-tetramethylbutyl)-5'-{a,a-dimethylbenzyl)-phenyl]ben-zotriazole.
2.2. 2-l-lydroxvbenzophenones, for example the 4-hydroxy, 4-methoxy, 4-octyloxy, 4-decyl-oxy, 4-dodecytoxy, 4-benzyloxy, 4,2',4'-trihydroxy and 2'-hydroxy-4,4'-dimethoxy derivatives.
2.3. Esters of substituted and unsubstituted benzoic acids, as for example 4-tertbutyl-phenyl salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoyi resorcinol, bis{4-tert-butylben-zoyl) resorcinol, benzoyl resorcinol, 2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzo-ate, hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, octadecyl 3,5-di-tert-butyl-4-hydroxyben-zoate, 2-methyl-4,6-di-tert-butylphenyl3,5-di-tert-butyl-4-hydroxybenzoate.

2.4. Acrvlates. for example ethyl a-cyano-P,p-diphenylacrylate, isooctyl a-cyano-|3,p-diphe-nylacrylate, methyl a-carbomethoxycinnamate, methyl a-cyano-p-methyl-p-methoxy-cinna-mate, butyl a-cyano-p-methyl-p-methoxy-cinnamate, methyl a-carbomethoxy-p-methoxycin-namate and N-(p-carbomethoxy-3-cyanovinyl)-2-methy)indDline.
2.5. Nickel compounds, for example nickel complexes of 2,2'-thio-bls-[4-{1,1,3,3-tetramethyl-butyl)phenol], such as the 1:1 or 1:2 complex, with or without additional ligands such as n-bulylamine, triethanolamine or N-cyc(ohexy(diethano(amine, nickel dibutyldithiocarbamate, nickel salts of the monoalkyi esters, e.g. the methyl or ethyl ester, of 4-hydroxy-3,5-di-tert-butylbenzylphosphonic acid, nickel complexes of ketoximes, e.g. of 2-hydroxy-4-methylphe-nyl undecylketoxime, nickel complexes of 1 -phenyl-4-lauroyl-5-hydroxypyrazole, with or with¬out additional ligands.
2.6. Stericallv hindered amines, for example bis{2,2,6,6-tetramethyl-4-piperidyl)sebacate, bis(2,2,6,6-tetramethyl-4-piperidyl)succinate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate, bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidyl)sebacate, bis(1,2,2,6,6-pentamethyl-4-piperi-dyl) n-butyl-3,5-di-tert-butyl-4-hydroxybenzylmalQnate, the condensate of 1-(2-hydroxyethyl)-2,2,6,6-tetramethy^4-hyd^oxypiperidine and succinic acid, linear or cyclic condensates of N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamineand4-tert-octylamino-2,6-di-chloro-1,3,5-triazine, tris(2,2,6,6-tetramethyl-4-piperidyl)nitrilotriacetate, tetrakis(2,2,6,6-tetra-m8thyl-4-piperidyl}-1,2,3,4-butane-tetracarboxylate, 1,1 '-(1,2-ethanediyl)-bis(3,3,5,5-tetrame-thylpiperazinone), 4-b8nzoyl-2,2,6,6-tetramethylpiperidine, 4-stearyloxy-2,2,6,6-tetramethyl-piperidine, bis(1,2,2,6,6-pentamethy)ptperidyl)-2-n-butyl-2-(2-hydroxy-3,5-di-ten-butylbenzyl)-malonate, 3-n-octyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]decan-2,4-dione, bis(1-octyloxy-2,2,6,6-tetramethylpiperidyl)sebacate, bis(1-octyloxy-2,2,6,6-tetramethylpiperidyl)succinate, linear or cyclic condensates of N,N'-bis-(2,2,6,6-tetramethyl-4-piperidyl)hexamethylened!-amineand4-morpholino-2,6-d(chloro-1,3,5-triazine, the condensate of 2-chloro-4,6-b(s(4-n-butylamino-2,2,6,6-tetramethylpiperidyl )-1,3,5-triazine and 1,2-bis(3-aminopropylamino)-ethane, the condensate of 2-chloro-4,6-di-(4-n-butylamino-1,2,2,6,6-pentamethylpiperidyl)-
1,3,5-triazine and 1,2-bis-{3-aminopropylamino}ethane, 8-ac6tyl-3-dodecyl-7,7,9,9-tetrame-thyl-1,3,8-tria2aspiro[4.5]decane-2,4-dione, 3-dodecyl-1-(2,2,6,6-tetramethyI-4-piperidy()pyr-rolidin-2,5-dione, 3-dodecyl-1-(1,2,2,6,6-pentamethyl-4-piperidyl)pyrrolidine-2,5-dione, a mix¬ture of 4-hexadecyloxy- and 4-stearylQxy-2,2,6,6-tetramethylpiperidine, a condensation pro¬duct of N,N'-bis(2,2,6,6-tetramethyi-4-piperidyl)hexamethylenediamine and 4-cyclohexylami-

no-2,6-dichloro-1,3,5-triazine, a condensation product of 1,2-bis(3-aminopropylamino)6thane and 2,4,6-trich(oro-1,3,5-triazine as well as 4-butylamino-2,2,6,6-tetramethylpipendine (CAS Reg. No. [136504-96-6]); N-(2,2,6,6-tetramethyl-4-piperidy!)-n-dodecylsuccinimid, N-(1,2,2,6,6-pentamethyl-4-piperidyl)-n-dodecylsuccinimid, 2-undecyl-7,7,9,9-tetramethy!-1 -oxa-3,8-d)aza-4-oxo-spiro[4,5]decane, a reaction product of 7,7,9,9-tetramethy)-2-cyc)ounde-cyl-1 -oxa-3,8-dia2a-4-oxospiro [4,5]decane und epichlorohydrin, 1,1 -bis(1,2,2,6,6-pentame-thyl-4-piperidyloxycarbonyl)-2-(4-methoxyphenyl)ethene, N,N'-bis-fornnyl-N,N'-bis(2,2,6,6-te-tramethyl-4-piperidyl)hexamethylenediamine, diester of 4-nnethoxy-methylene-malonic acid witli 1,2,2,6,6-pentamethyl-4-hydroxypiperidine, poly[metliylpropyl-3-oxy-4-(2,2,6,6-tetrame-thyl-4-piperidyl)]srloxane, reaction product of maleic acid anhydride-a-olefin-copolymer with 2,2,6,6-tetramethyl-4-aminopiperidine or 1,2,2,6,6-pentamethyi-4-aminopiperidine.
2.7. Oxamides. for example 4,4'-dioctyioxyoxanilide, 2,2'-diethoxyoxaniiide, 2,2'-dioctyloxy-5,5'-di-tert-butoxanilide, 2,2'-didodecyloxy-5,5'-di-tert-butoxanilide, 2-ethoxy-2'-ethyioxanilide, N,N'-b[s{3-dimethylaminopropyl)oxam[de, 2-ethoxy-5-tert-butyl-2'-ethoxaniIide and its mixture with 2-etiioxy-2'-ethyl-5,4'-di-tert-butoxanilide, mixtures of o- and p-metfioxy-disubstituted oxanilides and mixtures of o- and p-ethioxy-disubstituted oxanilides.
2.8. 2-(2-HvdroxvphenylM .3.5-tria2ines, for example 2,4,6-tris{2-hydroxy-4-octyloxyphenyl)-1,3,5-triazine, 2-(2-lnydroxy-4-octyloxyphenyi)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazlne, 2-(2,4-dihydroxyphenyl)-4,6-bis(2,4-dimettiylphenyl)-1,3,5-triazine, 2,4-bis(2-hydroxy-4-propyl-oxypiienyl)-6-(2,4-dimethylpiienyl)-1.3,5-triazine, 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(4-methy(pfienyl)-1,3,5-triazine, 2-(2-hydroxy-4-dodecyioxyphenyl)-4,6-bis(2.4-d(methylphenyl)-1,3,5-triazine. 2-(2-iiydroxy-4-tndecyloxyptienyl)-4,6-bls(2,4-dimetfiylphenyl)-1,3,5-triazlne, 2-[2-hydroxy-4-(2-hydroxy-3-butyloxy-propoxy)phenyl]-4,6-bis(2,4-dimettiyl)-1,3,5-trlazlne, 2-[2-hydroxy-4-(2-liydroxy-3-octytoxy-propy!oxy)pfienyl]-4,6-bis(2,4-dimethiyl)-1,3,5-trlazlne, 2-[4-{dodecyloxy/tridecyloxy-2-iiydroxypropoxy)-2-hydroxy-plienyl]-4,6-bis(2,4-dlmethylphenyl)-
1,3,5-tria2ine, 2-[2-hydroxy-4-(2-hydroxy-3-dodecyloxy-propoxy)phenyl]-4,6-bis(2,4-dimefhy(-phenyl)-1,3,5-triazine, 2-(2-hydroxy-4-hexyloxy)piienyl-4,6-diphenyl-1,3,5-tria2ine, 2-(2-tiy-droxy-4-methoxyphenyl}-4,6-dipheny!-1,3,5-triazine, 2,4,6-tris[2-hydroxy-4-(3-butoxy-2-hy-droxy-propoxy)phenyl]-1,3,5-triazine, 2-(2-hydroxyphenyl)-4-(4-methoxyphenyl)-6-phenyl-1,3,5-tria2lne, 2-{2-fiydroxy-4-[3-(2-ethyliiexyl-1-oxy)-2-hydroxypropyloxy]pfienyl}-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine.

3. Metal deactivators, for example N,N'-diphenyloxamide, N-salicyla!-N'-salicyloyl hydrazine, N,N'-bis(salicyJoyl) hydrazine, N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl) Inydrazine, 3-salicyloylamino-1,2,4-triazole, bis(benzyiidene)oxalyi dihydrazide, oxanilide, isophthaloyi dihydrazide, sebacoyi bisphenylhydrazide, I^.N'-diacetyladipoyl dihydrazide, IM,N'-bis{saiicyl-oyl)oxalyl dihydrazide, N,N'-bis(saiicyloyi)thiopropionyl dihydrazide.
4. Phosphites and phosphonites. for example triphenyi phosphite, diphenyi ail Specific examples are the following phosphites:




pha-heptadecyl-nitrone, N-ocatadecyl-alpha-pentadecyl-nitrone, N-heptadecyl-alpha-hepta-decyi-nitrone, N-octadecyl-alpha-hexadecy!-nitrone, nitrone derived from N.N-dialkylhydroxyl-amine derived from hydrogenated tallow amine,
7. Thiosvnergists. for example, dilauryl thiodipropionate or dislearyi thiodipropionate.
8. Peroxide scavengers, for example esters of p-thiodipropionic acid, for example the lauryl, stearyl, myristyl or tridecyl esters, mercaptobenzimidazole or the zinc salt of 2-mercapto-benzimidazole, zinc dibutyldithiocarbamate, dioctadecyl disulfide, pentaerythritol tetrakis(3" dodecylmercapto)propianate.
9. Polvamide stabilisers, for example, copper salts in combination with iodides and/or phos¬phorus compounds and salts of divalent manganese.

10. Basic co-stabilisers, for example, melamine, polyvinylpyrrolidone, dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine derivatives, amines, polyamides, polyurethanes, alkali metal salts and alkaline earth metal salts of higher fatty acids for example calcium stearate, zinc stearate, magnesium behenate, magnesium stearate, sodium ricinoleate and potassium palmitate, antimony pyrocatecholate or zink pyrocatecholate.
11. Nucleating agents, for example, inorganic substances such as talcum, metal oxides such as titanium dioxide or magnesium oxide, phosphates, carbonates or sulfates of, for example, alkaline earth metals; organic compounds such as mono- or polycarboxylic acids and the salts thereof, e.g. 4-tert-butylben2oic acid, adipic acid, diphenylacetic acid, sodium succinate or sodium benzoate; polymeric compounds such as ionic copolymers (ionomers). Specific examples are 1,3:2,4-bis(3',4'-dimethyibenzylidene)sorbitol, 1,3:2,4-di(paramethyldibenzyli-dene)sorbitol, und 1,3:2,4-di(benzylidene)sorbitol.
12. Fillers and reinforcing agents, for example, calcium carbonate, silicates, glass fibres, glass bulbs, asbestos, talc, kaolin, mica, barium sulfate, metal oxides and hydroxides, carbon black, graphite, wood flour and flours or fibers of other natural products, synthetic fibers.

13. Other additives, for example, plasticisers, lubricants, emulsifiers, pigments, rheology additives, catalysts, flow-control agents, optical brighteners, flameproofing agents, antistatic agents and blowing agents.
14. Benzofuranones and indolinones. for example those disclosed in U.S. 4,325,863; U.S. 4,338,244; U.S. 5,175,312; U.S. 5,216,052; U.S. 5,252,643; DE-A-4316611; DE-A-4316622; DE-A-4316876; EP-A-0589839 or EP-A-0591102 or 3-[4-(2-acetoxyethoxy)-
phenyl]-5,7-di-tert-butyl-benzofuran-2-one, 5,7-di-tert-butyl-3-[4-(2-stearoyloxyethoxy)phe-nyllbenzofuran-2-one, 3,3'-bis[5,7-di-tert-butyl-3-(4-[2-hydroxyethoxy]phenyl)benzofuran-2-one], 5,7-di-tert-butyl-3-(4-ethoxyphenyl)benzofuran-2-one, 3-{4-acetoxy-3,5-dimethylphe-nyl)-5,7-di-tert-butyl-benzofuran-2-one, 3-{3,5-dimethyl-4-pivaloyloxyphenyl)-5,7-di-tert-butyl-benzofuran-2-one, 3-(3,4-dimethylphenyl)-5,7-di-tert-butyl-benzofuran-2-one, 3-(2,3-di-methy!phenyl)-5,7-di-tert-butyi-benzofuran-2-one.
15. Amine oxides, for example amine oxide derivatives as disclosed in U.S. Patent Nos.
5,844,029 and 5,880,191, didecyl methyl amine oxide, tridecyl amine oxide, tridodecyi amine
oxide and trihexadecyl amine oxide. U.S. Patent Nos. 5,844,029 and 5,880,191 disclose the
use of saturated hydrocarbon amine oxides towards the stabilization of thermoplastic resins.
It is disclosed that the thermoplastic compositions may further contain a stabilizer or mixture
of stabilizers selected from phenolic antioxidants, hindered amine light stabilizers, ultraviolet
light absorbers, organic phosphorus compounds, alkaline metal salts of fatty acids and
thiosynergists.
The compositions may also contain a further conventional flame retardanf, for instance one or more conventional organohalogen, organophosphorus or melamine based flame retardants. For example:
Oganohatogen flame retardants are for example:
ChloroalkyI phosphate esters (ANTIBLAZE® AB-100, Albright & Wilson; FYROL® FR-2, Akzo Nobel),
polybrominated diphenyl oxide (DE-60F, Great Lakes Corp.), decabromodiphenyl oxide (DBDPO; SAYTEX® 102E),
fris[3-bromo-2,2-bis(bromomethy()propyl] phosphate (PB 370®, FMC Corp.),

bis(2,3-dibromopropyl ether) of bisphenoi A (PE68),
brominated epoxy resin,
ethy!ene-bis(tetrabromophthalimide) (SAYTEX® BT-93),
bis(hexachlorocyclopentadieno)cyclooctane (DECLORANE PLUS®),
chlorinated paraffins,
1,2-bis(tribromophenoxy)ethane (FF680),
tetrabromo-bisphenol A (SAYTEX® RB100),
ethylene bis-(dibromo-norbornanedicarboximide) (SAYTEX® aN-451),
bis-(hexachlorocyclopentadieno) cyclooctane,
tris-(2,3-dibromopropyl)-isocyanurate, and
ethylene-bis-tetrabromophthalimide.
The organophophorus flame retardants are for example:
Tetraphenyl resorcinol diphosphite (FYROLFLEX® RDF, Altzo Nobel),
triphenyl phosphate,
ammonium polyphosphate (APP) or (HOSTAFLAIvf AP750),
resorcinol diphosphate oligomer (RDP), phosphazene flame retardants and ethylenediamine diphosphate (EDAP).
Melamine based flame retardants are for example:
melamine cyanurate, MELAPUR®MC, melamine borate,
melamine phosphate, MELAPUR® P46, melamine polyphosphate MEU\PUR®200 and melamine pyrophosphate.
Specific examples of additives are phenolic antioxidants (item 1 of the list), further sterically hindered amines (item 2.6 of the list), light stabilizers of the benzotriazole and/or o-hydroxyphenyltriazine class (items 2.1 and 2.8 of the list), phosphites and phosphonites (item 4 of the list) and peroxide-destroying compounds (item 5.) of the list.

Additional specific examples of additives (stabilizers) which are benzofuran-2-ones, sucti as described, for example, in US-A-4,325,863, US-A-4,338,244 or US-A-5,175,312.
The instant composition can additionally contain another UV absorber selected from the group consisting of the s-triazines, the oxanilides, the hydroxybenzophenones, benzoates and the a-cyanoacrylates. Particularly, the instant composition may additionally contain an effective stabilizing amount of at least one other 2-hydroxyphenyl-2H-benzo-trlazole; another tris-aryl-s-triazine; or hindered amine or mixtures thereof. For example, additional components are selected from pigments, dyes, plasticizers, antioxidants, thixotropic agents, levelling assistants, basic costabllizers, further light stabilizers like UV absorbers and/or sterically hindered amines, metal passivators, metal oxides, organophosphorus compounds, hydroxylamines, and mixtures thereof, especially pigments, phenolic antioxidants, calcium sfearate, zinc stearate, UV absorbers of the 2-(2'-hydroxyphenyl)benzotriazole and 2-(2-Hydroxyphenyl)-1,3,5-triazine classes, and sterically hindered amines.
The additives of the invention and optional further components may be added to the polymer material individually or mixed with one another. If desired, the individual components can be mixed with one another before incorporation into the polymer for example by dry blending, compaction or in the melt.
Conveniently, the additives of this invention and possibly further additives as described above may be dry blended and then extruded, for instance in a twin screw extruder at 180-220°C, with or without nitrogen atmosphere. The material thus obtained may be further processed according to known methods. The surface of the articles formed do not show any loss of gloss or any kind of roughness.
Further, the instant invention pertains to a process for imparting light stability and flame retardancy to an organic polymeric substrate, which process comprises adding to said polymeric substrate an effective flame retarding amount of at least one compound of formula


The incorporation of the additives of the invention and optional further components into the polymer is carried out by known methods such as dry blending in the form of a powder, or wet mixing in the form of solutions, dispersions or suspensions for example in an inert solvent, water or oil. The additives of the invention and optional further additives may be incorporated, for example, before or after molding or also by applying the dissolved or dispersed additve or additive mixture to the polymer material, with or without subsequent evaporation of the solvent or the suspension/dispersion agent. They may be added directly into the processing apparatus (e.g. extruders, internal mixers, etc), e.g. as a dry mixture or powder or as solution or dispersion or suspension or melt.
The incorporation can be carried out in any beatable container equipped with a stirrer, e.g. in a closed apparatus such as a kneader, mixer or stirred vessel. The incorporation is for example carried out in an extruder or in a kneader. It is immaterial whether processing takes place in an inert atmosphere or in the presence of oxygen.
The addition of the additive or additive blend to the polymer can be carried out in all customary mixing machines in which the polymer is meited and mixed with the additives. Suitable machines are known to those skilled in the art. They are predominantly mixers, kneaders and extruders.
The process is for instance carried out in an extruder by introducing the additive during processing.
Specific examples of suitable processing machines are single-screw extruders, contrarotating and corotating twin-screw extruders, planetary-gear extruders, ring extruders or cokneaders. It is also possible to use processing machines provided with at least one gas removal compartment to which a vacuum can be applied.
Suitable extruders and kneaders are described, for example, in Handbuch der Kunststoffextrusion, Vol. 1 Grundlagen, Editors F. Hensen, W. Knappe, H. Potente, 1989. pp. 3-7, ISBN:3-446-14339-4 (Vol. 2 Extrusionsanlagen 1986, ISBN 3-446-14329-7).

For example, the screw length is 1 - 60 screw diameters, for example 35-48 screw diameters. The rotational speed of the screw is for instance 10 - 600 rotations per minute (rpm), for example 25 - 300 rpm.
The maximum throughput is dependent on the screw diameter, the rotational speed and the driving force. The process of the present invention can also be carried out at a level lower than maximum throughput by varying the parameters mentioned or employing weighing machines delivering dosage amounts.
If a plurality of components are added, these can be premixed or added individually.
The additives of the invention and optional further additives can also be sprayed onto the polymer material. They are able to dilute other additives (for example the conventional additives indicated above) or their melts so that they can be sprayed also together with these additives onto the material. Addition by spraying during the deactivation of the polymerization catalysts is particularly advantageous; in this case, the steam evolved may be used for deactivation of the catalyst. In the case of spherically polymerized polyolefins It may, for example, be advantageous to apply the additives of the invention, optionally together with other additives, by spraying.
The additives of the invention and optional further additives can also be added to the polymer in the form of a masterbatch ("concentrate") which contains the components in a concentration of, for example, about 1 % to about 40%, for example about 2% to about 20 % by weight incorporated in a polymer. The polymer must not be necessarily of identical structure than the polymer where the additives are added finally. In such operations, the polymer can be used in the form of powder, granules, solutions, suspensions or in the form of latices.
Incorporation can tal


2-(2-hydroxy-3,5-di-a-cumylphenyl)-2H-benzotriazole, (TINUVIN® 234, Ciba Specialty Chemicals Corp.);
2-(2-hydroxy-5-methylphenyl)-2H-benzotriazole, (TINUVIN® P, Ciba Specialty Chemicals Corp.);
5-chloro-2-(2-hydroxy-3,5-di-tert-butylpheny!)-2H-benzotriazole, (TINUVIN® 327. Ciba Specialty Ciiemicals Corp.);
2-(2-hydroxy-3,5-di-tert-amylphenyl)-2H-benzotria2ole, (TINUVIN® 328, Ciba Specialty Chemicals Corp.);
2-(2-hydroxy-3-a-cumyl-5-lert-octylphenyl)-2H-benzotriazole, (TINUVIN® 928, Ciba Specialty Chemicals Corp.);
2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate, (TINUVIN® 120, Ciba Specialty Chemicals Corp.);
2-hydroxy-4-n-octyloxybenzophenone, (CHIMASSORB® 81, Ciba Specialty Chemicals Corp.);
2,4-bis(2,4-dimethyphenyl)-6-(2-hydroxy-4-octyloxyphenyl)-s-triazine, (CYASORB® 1164, Cytec).
The following examples are meant for illustrative purposes only and are not to be construed to limit the scope of this invention in any manner whatsoever. Where given, room temperature depicts a temperature in t(ie range 20-25°C. Percentages are by weight of the polymer substrate unless otherwise indicated.
Test Methods
NFPA 701 Standard Methods of Fire Tests for Flame-Resistant Textiles and Films, 1989 and 1996 editions;
UL 94 Test for Flammability of Plastic Materials for Parts in Devices and Appliances, 5th Edition, October 29,1996;
Limiting Oxygen Index (LOI), ASTM D-2863;

Cone Calorimetry, ASTM E-1 orASTM E 1354; ASTM D 2633-82, burn test.

A mixture of 25g 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-cyclohexyloxy (0.098 mol), 40 mL triethylamine (0.29 mol), and 0.5g dimelhylaminopyridine in 80 mL methylene chloride is cooled to OC under nitrogen flow. A solution of 23 mL diphenyl chlorophosphate (0.11 mol) is added dropwise over 30 minutes. The mixture is allowed to warm to room temperature and is stirred 17 hours. The mixture is concentrated; a 10% ethyl acetate in heptane solution and a 1 N HCI solution are added. The aqueous layer is separated and extracted with 10% ethyl acetate in heptane solution. The organic layers are washed with 1 N HCI, water, and sat. NaHCOs solution, dried over MgS04, and concentrated. The oil is purified by column chromatography using heptane and ethyl acetate solvents on silica gel to give 41.5g (87% yield) of a pale yellow oil. 1H NMR 6 7.38 - 7.29 (m), 7.26 - 7.15 (m). 4.85 - 4.72 (m), 3.62 - 3,51 (m), 2.06 - 1.87 (m). 1.78 - 1.63 (m), 1.56 - 1.48 (m), 1.28 - 1.10 (m), 1.17(s), 1.14 (s)31 NMR 5-11.89.



chromatography using heptane and ethyl acetate solvents on silica gel followed by recrystallization in diethyl ether and heptane to give 5g white crystals {55% yield.) 1H NMR 6 8.04 (d), 7.60 (d), 7.58 (t), 7.46 (t), 7.45 (d), 7.31 (dd), 5.40 (tt), 2.14 (d), 1.87 (t), 1.47 (s), 1.07 (s).

A solution of 3,9-dichloro-2,4,8,10-tetraoxo-3,9-diphosphaspivo[5.5]undecane (see U.S. Pat. No. 4,070,336) (35g, 0.13 mmol) and triethylamine (56 mL, 0.40 mol) in toluene (200 mL) is cooled to OC under nitrogen. A solution of 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl (60.2g, 0.24 mol) in toluene (200 mL) is added dropwise. The mixture is stirred 18 hours at room temperature, and the solvents are evaporated. The residue is taken up in water and CH2CI2- The aqueous layer is separated and extracted several times with CH2CI2. The organic layers are dried over MgSO4and concentrated, and the residue is recrystallized with heptane to give 64.0g white solid (78% yield.) To the product is added 350mL toluene, and trace remaining acid is neutralized using concentrated ammonium hydroxide. The mixture is cooled to OC under nitrogen. A 70% solution of ^butylhydroperoxide in water (28 mL, 0.20 mol) is extracted into heptane; the heptane is dried over MgS04, filtered, and added dropwise to the toluene mixture. The mixture is stirred 18 hours at room temperature; the product is isolated by filtration to give 56.9g white solid (84% yield.) V NMR S 4.74(m), 4.64 (ddd). 4.30 (dd), 4,00 - 4.70 (m), 3.59 (m), 2.00 (b), 1.70 (b), 1.00 - 2.10 (m). 31 P NMR 5 -7.86.

Application Examples
Example A1
Fiber grade polypropylene is dry blended with the additives of the table below. Each additive is 1% by weight based on the weight of the polypropylene. Each of the polypropylene formulations is compounded In a twin screw extruder and the fibers are extruded using a Hills fiber extruder. Compounding is carried out at 425 °F. The fiber extrusion Is carried at 475 °F and 525 °F. Socks are knitted from the fibers and are evaluated for flame retardant efficacy using the NFPA 701 test.

The shorter the drip burn time, the more flame retardant the formulationis. It is seen that the compounds of the present invention provide significant flame retardancy to polypropylene fibers.


WHAT IS CLAIMED IS:
1. A compound of the formula
where
HA is independently of each other a sterically hindered nitroxyl, sterically hindered hydroxylamine or sterically hindered hydrocarbyloxyamine moiety,
L is independently of each other a direct bond or chemical linking group,
FRM Is independently of each other an organohalogen or an organophosphorus flame reatardant moiety, and
X, y and z are each independently greater tfian or equal to 1.
2. A compound according to claim 1, which compound is represented by formula I, II
or III




R1 and R2 are independently of each other hydrogen or hydrocarbyl, or R1 and R2 together form a hydrocarbylene group,
E is oxyl, hydroxy!, alkoxy, cycloalkoxy, aralkoxy, aryloxy, -0-CO-OG, -0-Si(G)3, or -O-CH2-OG where G is selected from the group consisting of hydrogen, an aliphatic, araliphatic and aromatic moiety; or E is -0-T-(OH)b,
T is a straight or branched chain alktylene of 1 to 18 carbon atoms, cycloalkylene of 5 io 18 carbon atoms, cycloaikenylene of 5 to 18 carbon atoms, a straight or branched chain alkytene of 1 to 4 carbon atoms substituted by phenyl or by phenyl substituted by one or two alkyl groups of 1 to 4 carbon atoms,
b is 1, 2 or 3 with the proviso that b cannot exceed the number of carbon atoms in T, and when b is 2 or 3, each hydroxyl group is attached to a different carbon atoms of T, and
FRM is independently of each other an organohalogen or an organophosphorus flame retardant moiety.
3. A compound accorcding to claim 2 in which E is oxyl, hydroxyl, C1-C24aikoxy, C5-C7cycioalkoxy or C7-C9aralkoxy;
L is a direct bond, a divalent group derived from C1-C24alkyl, C2-C24alkenyl, phenyl, naphthyl, biphenyl, C7-C9alkylaryl, or a polyvalent polymeric group; and
the flame retardant moiety FRM is selected from the group consisting of alkyl of 1 to 18 carbon atoms substituted by 1 to 37 bromine or chlorine atoms; cycloalkyl of 5 to 12 carbon atoms substituted by 1 to 23 bromine or chlorine atoms; aralkyl of 7 to 15 carbon atoms substituted by 1 to 5 bromine or chlorine atoms; aryl of 6 to 12 carbon atoms substituted by 5 to 9 bromine or chlorine atoms;



















an organic polymer substrate and
(B) an effective flame retarding amount of at least one compound of claim 1.

7. A composition according to claim 6 containing no antimony compounds or antimony compounds in an amount less than about 1 % by weiglit based on the weight of the polymer component (A).
8. A composition according to claim 6 containing no flame-retardant filler or a flame-retardant filler in an amount less than about 3% by weight based on the weight of the polymer component (A).
9. A composition according to claim 6 in which the polymer component (A) is a thermoplastic polymer.

10. A composition according to claim 6 in which the molecular weight of the compound of component {B) is in the range 170 -10000 g/mol.
11. A composition according to claim 6 in which the compound of component (B) is present from about 0.1 to about 10% by weight based on the weight of the polymer substrate
(A).
12. A composition according to claim 6 which comprises as further component
a halogenated flame retardant selected from the group consisting of organic aromatic
halogenated compounds; organic cycloaliphatic or polycycloaliphatic haiogenated
compounds; and organic aliphatic halogenated compounds; especially
chloroalkyl phosphate esters, poiybrominated diphenyl oxide, decabromodiphenyl oxide,
tris[3-bromo-2,2-b!S(bromomefhy()propy(] phosphate, bisC2,3-dibromopropyl ether) of bisphenol A. brominated epoxy resin, ethylene-bis(tetrabromophthalimide), bis(hexachlQrocyclopentadleno}cyclooctane,

chlorinated paraffins,
1,2-bis(tribromophenoxy)ethane,
tetrabromo-bisphenol A,
ethylene bis-(dibromo-norbornanedicarboximide),
bis-(hexacfilorocyclopentadieno) cyclooctane,
tris-(2,3-dibromopropyi)-isocyannurate, and
etiiylene-bis-tetrabromophthatimide.
13. A composition according to claim 12 in which the the halogenated flame
retardant of component is from about 0.5 to about 40% by weight based on the weight of the
polymer substrate (A).
14. A composition according to claim 6 comprising a further component selected from the group consisting of pigments, dyes, plasticizers, phenolic antioxidants, thixotropic agents, levelling assistants, basic costabilizers, calcium stearate, zinc stearate, nitrone stabilizers, amine oxide stabilizers, benzofuranone stabilizers, UV absorbers such as those of the 2-(2'-hydroxyphenyl)benzotrlazole and 2-(2-hydroxyphenyl)-1,3,5-triazin6 classes, sterically hindered amines, metal passivators, metal oxides, organophosphorus compounds such as phosphite and phosphonite stabilizers, hydroxylamines, non-halogenated flame retardants, and mixtures thereof.
15. A process for imparting light stability and flame retardancy to an organic polymer substrate, which process comprises adding to said polymer substrate an effective flame retarding amount of at least one compound according to claim 1.
16. A molded polymer article comprising at least one compound according to claim 1.
17. Use of a compound according to claim 1 for imparting light stability and flame retardancy to an organic polymer substrate.

18. A process for imparting light stability and flame retardance substantially as herein described and exemplified.


Documents:

1587-CHENP-2004 OTHER PATENT DOCUMENT 01-09-2009.pdf

1587-CHENP-2004 CORRESPONDENCE 05-11-2009.pdf

1587-chenp-2004 correspondence others.pdf

1587-chenp-2004 form 1.pdf

1587-chenp-2004 form 2.pdf

1587-chenp-2004 form 3.pdf

1587-chenp-2004 power of attorney.pdf

1587chenp-2004 abstract.pdf

1587chenp-2004 claims.pdf

1587chenp-2004 correspondence others.pdf

1587chenp-2004 correspondence-po.pdf

1587chenp-2004 description (complete).pdf

1587chenp-2004 form-1.pdf

1587chenp-2004 form-18.pdf

1587chenp-2004 form-26.pdf

1587chenp-2004 form-3.pdf

1587chenp-2004 form-5.pdf

1587chenp-2004 pct.pdf


Patent Number 240510
Indian Patent Application Number 1587/CHENP/2004
PG Journal Number 21/2010
Publication Date 21-May-2010
Grant Date 13-May-2010
Date of Filing 19-Jul-2004
Name of Patentee CIBA HOLDING INC
Applicant Address Klybeckstrasse 141 CH-4057 Basel
Inventors:
# Inventor's Name Inventor's Address
1 KOTE, Redina 1109 Brown Street 3E Peekskill, NY 10566
2 TROUTMAN, Malisa, V. 308 East 89th St. #3B New York, NY 10128
3 RAVICHANDRAN, Ramanathan; 1 Caddy Lane Suffern, NY 10901
PCT International Classification Number C07D211/94
PCT International Application Number PCT/EP02/14135
PCT International Filing date 2002-12-12
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 60/416,556 2002-10-07 U.S.A.
2 60/342,331 2001-12-21 U.S.A.