Title of Invention

Plasticizer activators for halogenated polymers and copolymers

Abstract Plasticizer activators selected from nitro aromatic or aliphatic compounds or derivatives or oligomers thereof in halogenated polymer and copolymer for a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers are disclosed herein. The PVC compositions comprising the above plasticizer activators have a better processibility, improved mechanical properties and for overcoming the antagonistic stress.
Full Text FORM 2
THE PATENT ACT 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
1. TITLE OF THE INVENTION:
"Plasticizer activators for halogenated polymers and copolymers'
2 APPLICANT
(a) Name : Malshe Vinod Chintamani
(b) Nationality : Indian
(c) Address : 1, Staff Quarters, UDCT Campus, Matunga,
Mumbai - 400 019, Maharashtra, India
3. INVENTORS
(a) Name : Malshe Vinod Chintamani
(b) Nationality : Indian
(c) Address : 1, Staff Quarters, UDCT Campus, Matunga,
Mumbai - 400 019. Maharashtra, India
(a) Name : Patil Jagdish Liladhar
(b)Nationality : Indian
(c) Address : 1, Staff Quarters, UDCT Campus, Matunga, Mumbai - 400 019. Maharashtra, India
3. PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed.

Technical Field:
The present invention relates to plasticizer activator for halogenated polymers and copolymers. Particularly, the present invention relates to nitro compound or derivatives or oligomers thereof as plasticizer activators in halogenated polymers and copolymers. The present invention also relates to polyvinyl chloride (PVC) compositions with low levels of plasticizer activators having better processibility, improved mechanical properties and overcoming antagonistic stress whitening of halogenated polymers.
Background of the invention:
A plasticizer is incorporated in plastic to increase its workability and its flexibility or distensibility. Adding the plasticizer may lower the melt viscosity, the temperature of the second-order transition, or the elastic modulus of the plastic [ASTM D-883]. When a clear plasticized halogenated polymer plasticized at lower level (3-10 parts per 100 parts (phr)) is stressed by folding in a thin sections, the stressed portions tend to appear white. This is referred as antagonistic stress whitening. This happens due to relatively poor compatibility of the components of the composition causing phase separation. The difference in the refractive index between the components causes whitening. In spite of several years of use of different plasticizers, there is no solution to this problem and users have to live with it. This is particularly more serious in the area of packaging where rigid vinyl films are used and are required to be folded to shape an article. These films contain a small proportion of plasticizers to retain the rigidity of the film. The lower level of plasticizer is responsible for the stress whitening. A higher concentration above about 15 phr does not cause stress whitening but the film looses its rigidity and becomes too flexible for some applications.
The use of phthalates as plasticizers [Doolittle, A. K., The Technology of Solvents and Plasticizers, Wiley, New York, Chap. 15, (1954)] in PVC began in the early 1920s. Di-2-ethylhexyl phthalate / Dioctyl phthalate (DOP) was reported in US 1,923,938 and used as the standard plasticizer for PVC. Other, more highly branched chain alkyl phthalates,
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such as di-isooctyl and di-isodecyl phthalates are considered general-purpose plasticizers, as they are less efficient, especially at low temperatures, and less stable towards oxidation. Linear phthalates are also general-purpose plasticizers even though they are more efficient at low temperatures, less volatile, and more stable towards oxidation than branched phthalates of equal molecular weight. The di-(heptyl, nonyl, undecyl) phthalate from mixed C7, C9, and Cn alcohols has become second industry standard general-purpose plasticizers with improved performance at slightly higher price.
The general-purpose plasticizers do not adequately generate the required properties and performance for plasticized PVC. Hence, plasticizers alone or in combination with a general-purpose plasticizer are used to achieve the required properties and performance for plasticized PVC. These plasticizers are known as specialty plasticizers. Housing and transportation equipment demands plasticizers with flame-retardant properties, which are phosphate esters and highly chlorinated paraffins. Tricresyl phosphate is well known industry standard in this field. Similarly isopropyl phenyl and t-butyl phenyl diphenyl phosphates and alkyl diphenyl phosphates are also important in this filed.
Linear phthalate, especially di-undecyl phthalate or by C9, C10, Cn phthalate are used as plasticizer to give very good flexibility at low temperature. When exceptionally low temperatures are required, aliphatic esters of adipic, azelaic, and sebacic acids are used. Some plasticizers such as tri-2-ethylhexyl phosphate, epoxidized alkyl oleates and tallates are frequently used in small amounts. Vinyl flooring, tiles, covering or sheet goods always required plasticizers that gives adequate flexibility for installation and yet withstands staining eg. 2,2,4-trimethyl-l,3-pentane-diol mono-isobutyrate benzoate.
US 2,894,959 describes the use of 4, 5-epoxycyclohexane-l,2-dicarbonitriles or 4,5-epoxycyclohexane-l,2-dicarboximides as plasticizers/ stabilizers for halogenated polymers. Berlin A. A. et al (Chemical Abstract, 52, 11779, 1958) reported the addition of glycidyl urethanes (specifically dicyclohexyl or ditolyl) inhibited dehydrochlorination of PVC.
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Objects
An object of the present invention is to provide plasticizer activators selected from nitro aromatic or aliphatic compound, derivatives or oligomers thereof for overcoming the antagonistic stress whitening of plasticized halogenated polymers.
Another object of the present invention is to provide plasticizer activators selected from nitro aromatic or aliphatic compound, derivatives or oligomers thereof for halogenated polymer and copolymers for better processibility.
Another object of the present invention is to provide plasticizer activators selected from nitro aromatic or aliphatic compound, derivatives or oligomers thereof for halogenated polymer and copolymers for improvement in mechanical properties.
Another object of the present invention is to provide PVC compositions comprising the above plasticizer activator having a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers.
Yet another object of the present invention is to provide PVC compositions comprising the plasticizer activator in conjunction with conventional plasticizer having a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers.
Detailed Description :
According to the present invention there is provided plasticizer activators selected from nitro aromatic or aliphatic compounds or derivatives or oligomers thereof in halogenated polymer and copolymer for a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers.
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According to the invention there is provided a PVC composition having a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers comprising PVC resin and plasticizer activators selected from nitro aromatic or aliphatic compounds or derivatives or oligomers thereof along with conventional additives.
According to the invention there is provided a PVC composition having a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers comprising PVC resin, di-octyl phthalate as plasticizer and plasticizer activators selected from nitro aromatic or aliphatic compounds or derivatives or oligomers thereof along with conventional additives.
The nitro aromatic or aliphatic compounds i.e. monomers or oligomers selected from nitro aromatic or aliphatic hydrocarbons or their derivatives or their oligomers such as nitrated linear alkyl benzene (NLAB); nitro esters of aliphatic primary or secondary alcohols or their derivatives or their oligomers such as di-benzoic acid ester of 2-nitro-1,3-propanediol or benzoic acid ester of 2-ntro butanol; nitro aromatic or aliphatic ethers or their derivatives or their oligomers such as P-nitro phenyl lauryl ether (PNPLE); nitro aromatic or aliphatic carboxylic acid or their derivatives or their oligomers such as p-nitro phenoxy acetic acid alkyl esters or any other suitable nitro compound. The plasticizer activator of the invention has the solubility parameter (o) in the range of 6 to 16.
Preferably the plasticizer activators are nitrated linear alkyl benzene (NLAB); di-benzoic acid ester of 2-nitro-1,3-propanediol; benzoic acid ester of 2-ntro butanol; P-nitro phenyl lauryl ether (PNPLE); or p-nitro phenoxy acetic acid alkyl esters.
The plasticizer activator are added in the range of 1 to 200 phr in a halogenated polymer or copolymer for the better processibility, improvement in the mechanical properties and to overcome the antagonistic stress whitening.
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The plasticizer activators of the invention can be used as primary plasticizers.
According to the invention there is provided a PVC composition having a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers comprising PVC resin, di-octyl phthalate as plasticizer and P-nitro phenyl lauryl ether as plasticizer activator along with conventional additives.
The P-nitro phenyl lauryl ether as plasticizer activator is added in the range of 2 to 10 phr. The P-nitro phenyl lauryl ether as plasticizer activator is added preferably in the range of 2 to 5 phr.
According to the invention there is provided a PVC composition having a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers comprising PVC resin, di-octyl phthalate as plasticizer and nitrated linear alkyl benzene (NLAB) as plasticizer activator along with conventional additives.
The nitrated linear alkyl benzene as plasticizer activator is added in the range of 2 to 10 phr. The nitrated linear alkyl benzene as plasticizer activator is added preferably in the range of 5 to 10 phr.
The di-octyl phthalate (DOP) as plasticizer is added in an amount of 10 phr.
The other conventional additives are lubricants such as stearic acid, inorganic salt of stearic acid such as calcium stearate, zinc stearate, PE wax, paraffin wax; processing aids such as copolymers of different acrylates; thermal stabilizers such as tin stabilizer or lead stabilizers or mixed metal stabilizers based on calcium, barium, etc.
Some of the plasticizer activators are prepared in our laboratory as follows :
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Preparation of p-Nitro phenyl lauryl ether (PNPLE)
To 139.1 lgm of p-nitro phenol, 249.24 gm of lauryl bromide and 138.21 gm of dried potassium carbonate powder were added. The reaction mixture was stirred at reflux temperature of lauryl bromide, 135° C, for 6-8 hrs. The material was then cooled to room temperature. Water was added to the reaction mixture. The mixture was then extracted in ether. The extract was washed with 10% sodium hydroxide solution and saturated brine solution to remove residual acidity. p-Nitro phenyl lauryl ether was separated as a crystalline solid after washing several times with water.



Preparation of p-nitro phenoxy acetic acid alkyl esters
The etherification of sodium or potassium salt of p-nitro phenol was carried out with mono-chloro sodium acetate as per conventional process. The resultant product was acidified with a mineral acid to recover the acid and the acid was esterified using mineral acids or ion exchange catalysts with C4 to Cis alcohols or diols or polyols.
Preparation of Nitrated linear alkyl benzene
100 gm of linear alkyl benzene was cooled to 5-10° C with constant stirring. Nitrating mixture (Nitric acid and sulfuric acid mixture) in a molar ratio of 1:1 with respect to linear alkyl benzene was cooled to -10° C, which was added to linear alkyl benzene at same temperature in an about one hour with stirring. After complete addition of mixed acid, the temperature of the reaction mixture was raised to 20°C. The reaction mixture was maintained at same temperature with slow stirring for 3hrs. Clear yellow colored liquid of nitrated linear alkyl benzene was formed at the end of the reaction. Unreacted
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acid was separated through separating funnel. The yellow colored liquid was washed several times with water to remove any traces of acids. Nitrated linear alkyl benzene was extracted in methanol and unreacted linear alkyl benzene was recycled in the next cycle. Nitrated linear alkyl benzene was dried over calcium carbonate overnight.



NLAB and PNPLE were characterized by Infrared spectroscopy (IR) for functional groups. IR spectra of PNPLE showed peaks at 1343 cm"1 corresponding to Ar-N02 group.
Both synthesized p-Nitro phenyl lauryl ether (with solubility parameter (a) 12 to 13 which was estimated by group contribution method) and nitrated linear alkyl benzene (with solubility parameter (a) 11 to 12 which was estimated by group contribution method) were compounded with PVC along with plasticizer activator and other conventional additives and further extruded as a sheet or cast a film as per the conventional method.
Preferably, the p-Nitro phenyl lauryl ether and nitrated linear alkyl benzene were blended with PVC along with plasticizer activator and other conventional additives in high speed mixer at 1200 rpm. The blend was processed in Brabender Twin Screw counter rotating extruder at 160 - 164°C and 45 rpm. The processed blend was extruded into sheets of 1 mm thickness and then pulled through a series of three heated steel rollers at 80° C temperature. The sheets were cut to the desired test specimens for testing.
Thermal stability of PNPLE or NLAB was evaluated by Brabender Plastograph. Brabender Plastograph showed the time of maximum torque did not differ much for all the PVC composition. The addition of plasticizer activators reduced the torque
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drastically. The drop was much less than that observed with increased dose of DOP (l0phr). NLAB based activator improved processing better than PNLPE-based activators. It was also observed that PNPLE after 5-phr doses showed degradation while processing at 165° C. NLAB at 7-phr doses and 3 phr DOP showed very low torque that indicating very low energy requirement for the plastification of PVC compound.
Rheological and mechanical properties of the PVC compositions comprising the plasticizer activator namely p-NPLE or NLAB were evaluated using the standard method.
In the Rheological properties of PVC composition comprising plasticizer activator NLAB showed lower viscosity at 5phr and 7phr thus indicating good plasticizer activating effect. However below 5phr, NLAB did not show any reduction in viscosity. Similarly PNPLE at both 3 and 5phr dose showed similar behavior as that of standard plasticizer, DOP. Above 5phr performance of PNPLE was difficult to assess. There is a drastic reduction in viscosity (to 1/10th) by incorporation of NLAB.
Mechanical properties like flexural strength and modulus, tensile strength decreased with increase in concentration of plasticizer activator whereas % elongation increased. This clearly shows that the plasticizer activators enhance the plasticizing action of plasticizer.
The extruded sheet comprising the plasticizer activator did not show any antagonistic whitening even in very thin sections in fully stressed conditions.
The conventional plasticizers are organic molecules (Esters of aliphatic or aromatic poly carboxylic acids, halogenated hydrocarbons, derivatives of vegetable oils, phosphate esters of aromatic alcohols) that are not polar enough to cause dissolution of PVC at room temperature. That is why a mixture of PVC and plasticizers can stay as a stable mixture at room temperature without gelling, for years. The temperature required to cause the plasticizer to penetrate depends on its solubility parameter and it should be very close to that of the polymer it self. We have improved the solubility of the plasticizers in PVC by increasing the polarity of the organic molecule by introducing a nitro group in the
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structure. This can be done either by selecting a nitro group containing component or introducing the nitro group subsequently. Thus nitro aliphatic, nitro aromatic compounds could be used as starting raw materials or these groups could be added to existing aromatic plasticizers by conventional nitration techniques. The nitrated plasticizers become coloured molecules. Most PVC products are required to be colourless. In order to restrict the colour of the products, we propose to use these as activators to plasticizers since a small portion of these products has shown a significant improvement in the plasticization capability and the processibility of the conventional plasticizers. The invention provides plasticizer activators selected from nitro aliphatic aromatic compounds, derivatives or oligomers thereof such as nitro aliphatic or aromatic hydrocarbon, nitro aliphatic or aromatic ether, nitro aliphatic or aromatic carboxylic acids or their derivatives or their oligomers preferably PNPLE or NLAB or p-nitro phenoxy acetic acid alkyl esters, which is used in conjunction with plasticizer to improve the processibility of PVC. The PVC compositions comprising the above plasticizer activators have better processibility and improved mechanical properties and overcame the antagonistic stress whitening of elasticized halogenated polymers. The PVC compositions comprising plasticizer activator in conjunction with standard plasticizer have better processibility, improved mechanical properties and overcame the antagonistic stress whitening of elasticized PVC.
As a demonstration of the principle, the present invention has demonstrated with two plasticizer activators namely P-nitro phenyl lauryl ether, or nitrated linear alkyl benzene for halogenated polymer or copolymer and in no way limit the invention.
Example
PVC was blended with plasticizer like dioctyl phthalate, plasticizer activator namely p-NPLE or NLAB along with the conventional additives like lubricant, stearic acid, PE wax; Processing aid; Tin stabilizer in a high speed mixer for 10 minutes at 1200 rpm and further processed in Brabender Twin Screw counter rotating extruder at 160 - 164°C and 45 rpm. The processed blend was extruded into sheets of 1mm thickness and then pulled
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through a series of three heated steel rollers at 80° C temperature. The compositions used are given in table 1.
Table 1 : PVC compositions comprising plasticizer activators

Compound PVC compositions
STD PNPLE(1) PNPLE (2) NLAB (1) NLAB(2) NLAB (3)
PVC 100 100 100 100 100 100
Stearic Acid 0.5 0.5 0.5 0.5 0.5 0.5
PE Wax 0.5 0.5 0.5 0.5 0.5 0.5
Processing Aid 2 2 2 2 2 2
Tin Stabilizer 2 2 2 2 2 2
DOP 10 7 5 7 5 3
PNPLE - 3 5 3 5 7
Rheological and mechanical properties of the compounds were evaluated using the standard methods. Thermal stability of PNPLE and NLAB was found out by the standard method.
Brabender Plastograph
Formulation /Composition comprising DOP-10 (2) which is commercial plasticizer (according to PVC composition STD) while other formulations / compositions comprising plasticizer activators such as p-nitro phenyl lauryl ether or nitrated alkyl benzene from 3 to 7 phr along with DOP. According to Figure 1 of accompanying drawing it is seen that with increase in the dose of plasticizer activator the torque is reduced. The time of maximum torque did not differ much for all the plasticized compounds. The addition of plasticizer activators reduced the torque drastically. The drop was much less than that observed with increased dose of DOP (l0phr). NLAB based activator (3 phr (5), 5 phr (6) and 7 phr (7)) improved processing better than PNLPE
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based activators (3 phr (3) and 5 phr (4)). It was also observed that PNPLE after 5-phr doses showed degradation while processing at 165° C. NLAB at 7-phr doses (7) and 3 phr (5) showed very low torque that indicating very low energy requirement for the plastification of PVC compound.
Rheology
Figure 2 of the accompanying drawing shows the rheological properties of compounds comprising plasticizer activator and Table 1 shows rheological data of PVC compounds containing different plasticizer activator. Compared to PVC comprising standard plasticizer, DOP at l0phr (12), NLAB showed lower viscosity at 5phr (9) and 7phr (8) thus indicating good plasticizer activating effect. However below 5phr, NLAB did not show any reduction in viscosity (13). Similarly PNPLE at both 3 phr (11) and 5phr (10) dose showed similar behaviour as that of DOP. Above 5 phr performance of PNPLE was difficult to assess. There is a drastic reduction in viscosity (to 1/10 ) by incorporation of NLAB.
Table 1 Rheological data of PVC compounds containing different plasticizer activator

Stabilizer Shear rate(s"1)
0.01 0.05 0.1 0.5 1 5
NLAB-7 1602 1780 1580 768 539 318
NLAB-5 3293 3861 2957 1148 1036 979
NLAB-3 13683 13440 10930 6418 5120 -
PNPLE-5 4167 5446 4496 3882 2576 1586
PNPLE-3 5210 6662 5919 2921 2827 1512
DOP-10 3981 5718 4014 2304 1821 883
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Mechanical Properties
As seen from the Table 2, flexural strength and modulus, tensile strength decreased with increase in plasticizer activator whereas % elongation increased. This clearly shows that the plasticizer activators enhance the plasticizing action of plasticizer.
Table 2 Mechanical Properties of PVC compounds containing synthesized plasticizer activator

Sample FlexuralModulus(MPa) Flexural Strength (MPa) Extension @ Break Tensile Strength (MPa)
DOP-10 12064 57.29 17.25 44.58
PNPLE-3 11880 56.89 18.60 44.02
PNPLE-5 11720 56.64 19.59 43.68
NLAB-3 11840 56.71 18.21 43.87
NLAB-5 11640 55.78 20.79 43.20
NLAB-7 11360 55.16 19.98 42.65
Thus NLAB when incorporated along with conventional plasticizer DOP, showed better rheological properties and hence better processibility as compared to only DOP at the same dosage. At and above 5phr dosage NLAB showed plasticizer activating characteristics, i.e. it improved plasticizing action of plasticizer. While PNPLE could be evaluated only upto 5phr inclusion as above this limit the compound showed degradation at processing temperature. The processibility was improved by addition of PNPLE as evident from Plastograph curves. However it did not improve plasticizing action of DOP as compared to NLAB. Addition of plasticizer activator is a novel idea to improve the processibility of PVC using commercial plasticizer.
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CLAIMS
1. Plasticizer activators selected from nitro aromatic or aliphatic compounds or derivatives or oligomers thereof in halogenated polymer and copolymer for a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers.
2. The plasticizer activators as cliamed in claim 1, wherein the nitro aromatic or aliphatic compounds or derivatives or oligomers thereof are selected from nitro aromatic or aliphatic hydrocarbons or their derivatives or their oligomers, nitro esters of aliphatic primary or secondary alcohols or their derivatives or their oligomers, nitro aromatic or aliphatic ethers or their derivatives or their oligomers, nitro aromatic or aliphatic carboxylic acid or their derivatives or their oligomers.
3. The plasticizer activators as cliamed in claims 1 to 2, wherein the nitro aromatic or aliphatic compounds or derivatives or oligomers thereof have the solubility parameter (o) in the range of 6 to 16.
4. The plasticizer activator as cliamed in claims 1 to 3, wherein the nitro aromatic or aliphatic compounds or derivatives or oligomers thereof are added in the range of 1 to 200 phr in a halogenated polymer or copolymer for the better processibility, improvement in the mechanical properties and to overcome the antagonistic stress whitening.
5. A polyvinyl chloride composition having a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers comprising polyvinyl chloride resin and plasticizer activators selected from nitro aromatic or aliphatic compounds or derivatives or oligomers thereof along with conventional additives.
6. A polyvinyl chloride composition with better processibility without affecting
mechanical properties and for overcoming the antagonistic stress whitening of
elasticized polyvinyl chloride comprising polyvinyl chloride resin, di-octyl
phthalate as plasticizer, P-nitro phenyl lauryl ether as plasticizer activator along
with conventional additives.
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7. The compositions as cliamed in claims 5 to 6, wherein the nitro aromatic or aliphatic compounds or derivatives or oligomers thereof are selected from nitro aromatic or aliphatic hydrocarbons or their derivatives or their oligomers, nitro esters of aliphatic primary or secondary alcohols or their derivatives or their oligomers, nitro aromatic or aliphatic ethers or their derivatives or their oligomers, nitro aromatic or aliphatic carboxylic acid or their derivatives or their oligomers.
8. The compositions as cliamed in claims 5 to 7, wherein the nitro aromatic or aliphatic compounds or derivatives or oligomers thereof have the solubility parameter (o) in the range of 6 to 16 .
9. The compositions as cliamed in claims 5 to 6, wherein the nitro aromatic or aliphatic compounds or derivatives or oligomers thereof added in the composition are in the range of 1 to 200 phr.
10. The composition as claimed in claims 5 to 6, wherein the other additives are stearic acid, PE wax, Processing aid or Tin stabilizer.
Dated this the 6th Day of Oct 2005
Prof Vinod Chintamani Malshe Applicant
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Abstract:
Plasticizer activators selected from nitro aromatic or aliphatic compounds or derivatives or oligomers thereof in halogenated polymer and copolymer for a better processibility and improved mechanical properties and for overcoming the antagonistic stress whitening of elasticized halogenated polymers are disclosed herein. The PVC compositions comprising the above plasticizer activators have a better processibility, improved mechanical properties and for overcoming the antagonistic stress.
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Documents:

1261-mum-2005-abstract(granted)-(17-6-2010).pdf

1261-mum-2005-abstract.doc

1261-mum-2005-abstract.pdf

1261-mum-2005-cancelled page(3-5-2010).pdf

1261-MUM-2005-CANCELLED PAGES(21-12-2009).pdf

1261-MUM-2005-CLAIMS(AMENDED)-(21-12-2009).pdf

1261-MUM-2005-CLAIMS(AMENDED)-(3-5-2010).pdf

1261-mum-2005-claims(granted)-(17-6-2010).pdf

1261-mum-2005-claims.doc

1261-mum-2005-claims.pdf

1261-mum-2005-correspondence 1(6-10-2005).pdf

1261-mum-2005-correspondence 2(11-4-2008).pdf

1261-MUM-2005-CORRESPONDENCE(15-2-2010).pdf

1261-MUM-2005-CORRESPONDENCE(22-4-2010).pdf

1261-MUM-2005-CORRESPONDENCE(3-5-2010).pdf

1261-mum-2005-correspondence(ipo)-(17-6-2010).pdf

1261-mum-2005-correspondence(ipo)-(29-1-2009).pdf

1261-mum-2005-correspondence-received.pdf

1261-mum-2005-description (complete).pdf

1261-mum-2005-description(granted)-(17-6-2010).pdf

1261-mum-2005-drawing(granted)-(17-6-2010).pdf

1261-mum-2005-drawings.pdf

1261-MUM-2005-FORM 1(21-12-2009).pdf

1261-mum-2005-form 1(25-11-2005).pdf

1261-mum-2005-form 13(11-4-2008).pdf

1261-mum-2005-form 13(15-2-2010).pdf

1261-mum-2005-form 18(11-4-2008).pdf

1261-mum-2005-form 2(granted)-(17-6-2010).pdf

1261-MUM-2005-FORM 2(TITLE PAGE)-(21-12-2009).pdf

1261-mum-2005-form 2(title page)-(granted)-(17-6-2010).pdf

1261-MUM-2005-FORM 26(21-12-2009).pdf

1261-mum-2005-form 3(6-10-2005).pdf

1261-mum-2005-form-1.pdf

1261-mum-2005-form-2.doc

1261-mum-2005-form-2.pdf

1261-mum-2005-form-3.pdf

1261-MUM-2005-REPLY TO EXAMINATION REPORT(21-12-2009).pdf


Patent Number 241102
Indian Patent Application Number 1261/MUM/2005
PG Journal Number 26/2010
Publication Date 25-Jun-2010
Grant Date 17-Jun-2010
Date of Filing 07-Oct-2005
Name of Patentee MALSHE VINOD CHINTAMANI
Applicant Address 1, Staff Quarters, UDCT Campus, Matunga, Mumbai 400 019
Inventors:
# Inventor's Name Inventor's Address
1 MALSHE VINOD CHINTAMANI 1, Staff Quarters, UDCT Campus, Matunga, Mumbai 400 019
2 PATIL JAGDISH LILADHAR 1, Staff Quarters, UDCT Campus, Matunga, Mumbai 400 019
PCT International Classification Number C08K5/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA