Title of Invention

A CLEANSING COSMETIC COMPOSITION

Abstract

A cleansing cosmetic composition comprising : i. a cationized silicone delivery system selected from one or more of (a) a cationized fatty alkyl silicone copolymer (b) cationized dimethicol complex and (c) cationized high viscosity lower alkyl silicone fluid with or without cationized silicone gum blend. ii. detergent active; iii. optionally cationic polymer; wherein the cationized high viscosity lower alkyl silicon fluid has viscosity of 0.5 x 106 to 600 x106 cp

Full Text

FORM -2 THE PATENTS ACT, 1970 (39 of 1970) COMPLETE SPECIFICATION (See Section 10, RULE 13) -IMPROVED DETERGENT COMPOSITION— HINDUSTAN LEVER LIMITED, a company incorporated under the Indian Companies Act, 1913 and having its registered office at Hindustan Lever House, 165/166, Backbay Reclamation, Mumbai -400 020, Maharashtra, India The following specification particularly describes the nature of This invention and the manner in which it is to be performed. Technical field: The present invention relates to a cosmetic composition, suitable for delivering superior conditioning benefits on substrates such as hair skin and the like by the enhanced deposition of benefit agents in particular, silicones to substrates such as hair, skin and the like The cosmetic composition can be provided in variety of formulations, in particular, rinse-off cleansing or care formulations for cosmetic applications. The composition provides superior conditioning while delivering excellent cleansing. -The invention also relates to method for superior conditioning of substrates such as skin, hair and the like using the cosmetic composition of the invention. Background of the Invention: Silicones are known to provide a light, silky feel on hair and skin. Their effectiveness is dependent on the extent of deposition However, for cleansing products, since the surfactants present are engaged in the removal of oil from the substrate, mere addition of silicone(s) oil into the composition does not serve any purpose, as they get washed off. The art talks about various methods to increase deposition of silicones from the cosmetic cleansing compositions. The routes referred to include using blends of silicones and/or modified silicones, cationic polymers as deposition aids and special surfactant systems.US 4,70,314 teaches an aqueous composition, stable on storage, comprising soap, silicone cationic polymer, cationic surfactant and cationic polymer. The cationic silicone polymer referred to is limited to the class of amodimethicones which has been specifically proposed to achieve the desired storage, stability of anioinic surfactants with cationic compounds and does not deal with desired deposition levels of silicones on substrates disclosed the possible use of silicone component consisting essentially of a mixture of silicon gum and silicone fluid to achieve durable skin conditioning, superior smooth and soft skin feel, lather and improved rinsing. ORGN While this prior art also makes use of silicone compounds for mild skin cleansing the same does not specifically traverse the need for improving the level of silicone deposition and related benefits. US 5,981,465 teaches a method for increasing surface deposition of silicone from soap and improving processing characteristics of soap and a corresponding composition are disclosed. The composition includes a fatty alkyl silicone, a fatty silicate ester, a high viscosity lower alkyl silicone fluid, a silicone surfactant, and an organic surfactant. The organic surfactant is one or more of a nonionic, cationic or anionic surfactants. US 2002/0082174 A1 also talks about achieving efficient deposition of cosmetically active ingredient onto skin or hair and disclosed a cleansing cosmetic composition containing a anionic, cationic, amphoteric surfactants or mixtures thereof, with an alkoxylated nonionic surfactant as co-surfactant, a water insoluble component and a cationic conditioning polymer. While the composition is stated to deliver improved silicone deposition, good cleansing and conditioning it is however, limited to systems with a maximum surfactant content or the detergent active content of 60%, which is a mix of surfactants and co-surfactants. Our co-pending application teaches a cationized silicone composition for the efficient delivery of cationized silicone comprising a cationized silicone active selected from one or more of (a) a cationized fatty alkuyl silicone copolymer (b) cationized dimethiconol complex and (c) cationized high viscosity lower alkyl silicone fluid having viscosity of 0.5 x 106 - 600 x 106cp with or without cationized silicone gum blend. It would be apparent from the above that while it is well known that silicones constitute active benefit ingredient for various cosmetic formulations, its selection and form or incorporation in various cosmetic formulations is important to achieve the desired stability, compatibility with various other ingredients and importantly the effective deposition of the silicones onto said substrates as benefit agents. Importantly, as would be apparent from the above state of the art, surfactants constitute the basic constituent of a cleansing composition and cleansing/cosmetic formulations incorporating silicones as benefit agent need to be compatible with various surfactant systems for effective and wide application/use of silicones as benefit agents in cosmetic formulations. Moreover, 3 considering that compositions with higher detergent active compositions are common it is also important to be able to achieve superior silicone deposition and hence conditioning from suchcomposition without any limitation in levels of active detergent in such formulations Objects of invention: It thus has been the basic objective of the invention to provide for a wide range of cleansing cosmetic composition with selective cationised silicone active Which' would serve for effective delivery of the silicones as the benefit agent onto substrates such as hair, skin and the like. Another object of the present invention is directed to provide a wide range of synergistic cleansing cosmetic formulations comprising selective cationised silicone active which would serve for enhanced delivery of the silicones as the benefit agent onto substrates such as hair, skin and the like. Yet further object of the present invention is directed to cleansing cosmetic composition comprising selective cationised silicone delivery systems which would be stable and compatible with any variety of conventional surfactant system and achieve desired delivery and retention of silicone benefit agent on any biological substrate even as a rinse-off product. Yet another object of the present invention is directed to cleansing cosmetic composition comprising selective cationised silicone delivery systems which would be stable and compatible with any variety of conventional surfactant system and achieve desired delivery and retention of silicone benefit agent on any biological substrate to achieve superior conditioning without any limitations in level of detergent active. Yet another object of the present invention is directed to provide an improved method of treating substrates such as hair, skin and the like whereby it would be 4 possible to achieve effective deposition of silicone benefit agent onto such substrates even by applying rinse-off formulations. Summary of the invention: Thus according to the present invention there is provided a cleansing cosmetic composition comprising (i) a selective cationised silicone delivery Not selected from one or more of (a) a cationised fatty alkyl silicone copolymer; (b) cationised dimethiconol'complex and (C) cationised high viscosity lower alkyl silicone fluid with or without cationised silicone gurn blend (ii) detergent active and optionally(iii) cationic polymer. In the above disclosed" cationised silicone delivery system, for the cationised fatty alkyl silicone copolymer, alkyl is defined as a branched or straight alkyl chain containing 10 to 80 carbon atoms, and fatty is defined as a fatty acid with a straight chain containing 10 to 30 carbon atoms. The viscosity range of the fatty alkyl silicone copolymer is 0.5 x 105 to_5_x: 106cp (centi poise) Preferred alkyl chain contains 60 carbon atoms and preferred fatty acid contains 16 to 18 carbon atoms. The preferred viscosity range for the polymer is 1 x 105 to 1 x 106 cp. The cationised dimethiconol complex has a viscosity range from 1x106 to 50x 106 cp and preferably 10 x 106 to 20 x 106 cp. The cationised high viscosity lower alkyl silicone fluid has a viscosity range of 0.5 x 106 - 600x 106 cp. The blend of fluid to gum is x : 1, with x varying from 0.1 to 20 and preferably 1. Advantageously, the selective cationised silicone delivery system can combine with variety of surfactant systems to provide for wide range of cosmetic formulation with desired silicone deposition on substrates .The surfactant can be selected to be any conventional surfactant system. Importantly the cosmetic 5 composition of the invention can have detergent active even at levels higher than 60 % by wt. and yet achieve both the desired silicone deposition on substrate and better cleansing;properties In accordance with an aspect the cleansing cosmetic composition comprises (i) 0.1 to 20 % preferably 0.5 to 10 % more preferably 1 to 5 % by wt. a selective cationised silicone delivery system selected from one or more of (a) a cationised fatty alkyl silicone copolymer; (b)cationised dimethiconol complex and (c) cationised high viscosity lower alkyl silicone fluid with or without cationised silicone gum blend (ii) 20.to 85 % preferably 30 to 80 % more preferably 40 to 70 % by wt. detergent active and optionally (iii) 0.001 to 10%, preferably 0.01 to 1% more preferably 0.05 to'0.57% by wt. cationic polymer. A preferred aspect of the invention is directed to a cleansing cosmetic composition comprising (i) cationised silicone delivery system comprising a cationised silicone active selected from one or more of (a) a cationised fatty alkyl silicone copolymer; (b) cationised dimethiconol complex (c) cationised high viscosity lower alkyl silicone fluid with or without cationised silicone gum blend (ii) anionic detergent active and (iii) a cationic polymer. A further preferred aspect of the invention is directed to a cleansing cosmetic composition comprising (i) cationised silicone delivery system comprising a cationised silicone active selected from one or more of (a) a cationised fatty alkyl silicone copolymer; (b) cationised dimethiconol complex (c) cationised high viscosity lower alkyl silicone fluid with or without cationised silicone gum blend (ii) soap and (iii) a cationic polymer. An yet further preferred aspect of the invention is directed to a cleansing cosmetic composition comprising (i) cationised silicone delivery system comprising a cationised silicone active selected from one or more of (a) a cationised fatty alkyl silicone copolymer; (b) cationised dimethiconol complex (c) 6 cationised high viscosity lower alkyl silicone fluid with or without cationised silicone gum blend (ii)soap which is the alkali metal salt of a carboxylic fatty acid and (iii) a cationic polymeny Yet another preferred aspect of the invention provides a cleansing cosmetic composition comprising (i) cationised silicone delivery system comprising a cationised silicone active selected from one or more of (a) a cationised fatty alkyl silicone copolymeny(b) cationised dimethiconol complex (c) cationised high viscosity lower alkyl silicone fluid with or without cationised silicone gum blend and (d) an organic surfactant (ii) detergent active and (iii) a cationic polymer In accordance with yet further preferred aspect of the invention the cleansing composition comprise cationised silicone delivery system comprising a selective synergistic blend of said (a) a cationised fatty alkyl silicone copolymer (b) cationised dimethiconol complex and (c) a cationised high viscosity lower alkyl silicone fluid and cationised silicone gum blend and (d) an organic surfactant. In accordance with a preferred aspect, the cleansing composition comprises (i) selective synergistic blend of cationised silicone delivery system comprising (a) 15-50 parts of a cationised fatty alkyl silicone copolymer (b)5-50 cationised dimethiconol complex and (c) 1 -50 parts of a. cationised high viscosity lower alkyl silicone fluid and cationised silicone gum blend and (d) an organic surfactant (ii) detergent active and (iii) a cationic polymer In accordance with yet further aspect of the present invention there is provided a synergistic cleansing cosmetic composition comprising (i) cationised silicone delivery system comprising a selective synergistic blend of said (a) a cationised fatty alkyl silicone copolymer (b) cationised dimethiconol complex and (c) a cationised high viscosity lower alkyl silicone fluid and cationised silicone gum blend and (d) an organic surfactant (ii) detergent active and (iii) cationic polymer. 7 Preferably, in the cosmetic formulation of the invention the detergent active is an anionic surfactant, specifically a soap and more specifically an alkali metal salt of a carboxylic fally ac According to a further aspect the present invention provides an improved method of cosmetically treating substrates such as skin, hair and the like comprising contacting the substrate to be treated with said cleansing cosmetic composition of the invention discusse above Detailed description: The invention thus provides for cleansing cosmetic composition which would Improve the deposition of silicone on the skin and hair as detailed above. Selective cationised silicone delivery system: As stated above the composition comprises a selective cationised silicone delivery system selected from a cationic fatty alkyl silicone copolymer, cationised dimethiconol, a cationic high viscosity fluid silicone with or without cationised silicone gum blend and organic surfactants. In accordance with an aspect of the present invention, the cosmetic compositions of the present invention essentially contain a synergistic blend of fatty alkyl cationised silicone copolymer, cationic high viscosity fluid silicone and cationised dimethiconol. The fally alkl silicone useful Present investion is a copolymer of stearic acid and cetearyl methicone. The cationised fatty alkyl silicone copolymer may comprise 10-30 parts by weight per 100 parts of a soap additive composition, and preferably, about 20 parts; the cationised dimethiconol may also comprise 5-30 parts by weight per 100 parts of a soap additive composition, and preferably, about 25 parts. The cationised high viscosity fluid silicone is present at a level which is effective to deliver a skin sensory benefit, for example, from 1 - 50 parts by weight, and 8 preferably from 10 - 30 parts by weight per 100 parts of a soap additive composition. High viscosity fluid silicone, as used herein, denotes a silicone with viscosity rangnig 0:5 x 106 -to 600 x106 cp. Silicone fluids useful in the present invention may be polyalkyl siloxanes, polyaryl siloxanes, or polyalkylaryl siloxanes of suitable viscosity and molecular weight. The polyalkyl siloxanes that may be used herein include, for example, polydimethy siloxanes The compositio may additonally contain mixture of 1 :1quaternary catalyst and dimethylsulphate; which is present at a level of 0.01 - 5% and preferably at 0.5 -1% level. The quaternizing catalyst can be drawn from a group of the following. - tetramethyl ammonium hydroxide - trimethyl N-propyl hydroxide - trimethyl N-2 pentyl hydroxide Organic surfactant: The organic surfactants useful herein may be selected from a wide range of surfactants including from the group of cationic, anionic, and nonionic surfactants suitable for personal products. These components are generally present from about 1-10 parts per 100 parts of the additive composition, preferably from about 4 parts to 6 parts. Preferred anionic surfactants for use in the present compositions are sodium laureth-7 sulfate and diethylene glycol monooleate, Cationic surfactants used are dicocodimethylammonium chloride and N-(3-chloroallyl) hexaminium chloride. Nonionic surfactants used in the invention are the lauryl ether polyoxyethylenes, and higher and lower molecular weight versions. Detergent active: The composition according to the invention will preferably comprise detergent actives that may be soap or non-soap surfactants and generally chosen from both anionic, nonionic, cationic, zwitterionic detergent actives or mixture thereof. Suitable examples of detergent-active compounds are compounds commonly 9 used as surface-active agents given in the well-known textbooks "Surface Active Agents", Volume I by Schwartz and Perry and "Surface Active Agents and Detergents volume ll by schwartz, perry and Berch or Handbook of Surfactants", M.R. Porter, Blackie Publishers, 1991. Cationic polymer: Non-limiting, cationic polymers that can be used in compositions of the invention include cation cellulose derirvatise, cationic starches copolyvinylpyrrolidone, quaternary ammonium salt "and acrylamide quaternized polyvinylpyrrolidone, quaternized vinylpyrrolidone vinylmidazol polymers, polyglycol amide condensates, quaternized collagen polypeptide, polyethylene amine, cationised silicon polymer, cationic silicone polymers, copolymers of adipic acid and dimethylamino-hydroxypropyl diethylene triamine, polyaminopolyamide and their water soluble crosslinked polymers, cationic chitin derivatives and cationic guargums. The preferred cationic conditioning polymer is a cationic derivative of guar gum. The most preferred cationic polymer is guar hydroxy propyl trimethyl ammonium chloride. The present compositions may optionally include soap filler such as talc Any of the standard fillers, which are used in the manufacture of soap bars, may be used. Filler may be included in the present compositions at levels from about 100-1000 parts by weight per 100 parts soap additive composition, and preferably 200-600 parts. The details of the invention its objects and advantages are explained hereunder in greater detail in relation to the following non-limiting exemplary illustrations. 10 Hair care formulations The hair care formulation was formulated as a bar and was obtained by mixing Table 1 Composition (% wt.) Example 1 Example 2 Example 3 Soap '62 80 62 Silicone blend - - 1.5 Silicone Conventional 1.5 - - Cationic polymer - - 0.1 Electrolyte 1 1 1 Filler 18 4 18 Water To 100 To 100 To 100 The silicone deposition achieved from the above formulations were tested following a standard protocol as described hereunder: Method Soap bars of different compositions as per Examples 1,2 and 3 were used. The bars were placed with consumers who used them in normal in-use conditions for a period of 7 days. They were then asked to rate the specific composition placed with them on a scale of 1(very poor) - 5(excellent). The scores were collected'and average for the entire sample. The score distributions were then subjected a statistical significance analysis as represented in Table 2 hereunder: The difference in the benefit between example 1 and example 2 (D1) was compared with the difference in benefit between example 3 and example 2 (D2). The ratio of D2 to D1 will give the relative benefit and a ratio.>1 will demonstrate the superiority of the silicone blent according to the present investion Table 2 Parameter Ex.1 Ex.2 D1 Ex.3 Ex.2 D2 Ratio D2:D1 Easy to comb 4.76 ' 4.65 -0:11: - 4.4 . 4.1 -0:3 M 2.7 Tangle free and manageable 4.65 4.63 -0.02 4.63 4.43 -0.2 10.0 DN leave hair rough and dry 4.64 4.57 -0.07 4.8 4.3 -0.5 7.1 Makes hair soft 4.75 4.7 -0.05 4.74 4.52 -0.22 4.4 Makes hair shiny 4.52 4.46 -0.06 4.5 4.3 -0.2 3.3 It would be well apparent from the above that the composition in accordance with the present invention incorporating the silicone delivery system a ratio > 1, is achieved which indicated significantly superior conditioning from the formulation of Example 3 vis-a-vis the formulations, of Examples 1 and. 2. It is thus possible by way of the present invention to provide for a wide range of cleansing cosmetic composition with selective cationised silicone active which would serve for effective delivery of the silicones as the benefit agent onto substrates such as hair, skin and the like. Importantly, the silicone delivery system used in the formulation of the invention provided synergistic cleansing cosmetic formulations with soap base which would serve for enhanced delivery of the silicones as the benefit agent onto substrates such as hair, skin and the like . 12 The composition of the invention is found to be stable and compatible with any variety of conventional surfactant system without limitations in level of surfactant and achieved desired deliveryand retention 13 biological substrate even as a rinse-off product. The invention would also serve to provide improvement in method of treating substrates such as hair,skin, and the like whereby it would be possible to achieve effective deposition of silicone benefit agent onto such substrates even by applying rinse-off formulations. WE CLAIM 1. A cleansing cosmetic composition comprising : i. a cationized silicone delivery system selected from one or more of (a) a cationized fatty alkyl silicone copolymer (b) cationized dimethicol complex and (c) cationized high viscosity lower alkyl silicone fluid with or without cationized silicone gum blend. ii. detergent active; iii. optionally cationic polymer; wherein the cationized high viscosity lower alkyl silicon fluid has viscosity of 0.5 x 106 to 600 x106 cp 2. A cleansing cosmetic composition comprising a cationized silicone delivery system as claimed in claim 1 wherein the cationized fatty alkyl silicone copolymer comprises branched or straight alkyl chain containing 10 to 80 carbon atoms and fatty acid having a straight chain containing 10 to 30 carbon atoms. 3. A cleansing cosmetic composition comprising a cationized silicone delivery system as claimed in claim 1 to 2 wherein the viscosity range of the cationized fatty alkyl silicon copolymer is 0.5 x 105 to 5 x 106 cp (centi poise) 4. A cleansing cosmetic composition comprising a cationized silicone delivery system as claimed in claim 1 to 3 wherein the viscosity range of the cationized fatty alkyl silicone copolymer is 1 X 105 to 1 x 106cp 5. A cleansing cosmetic composition comprising a cationized silicone delivery system as claimed in claim 1 to 4 wherein the cationized fatty alkyl silicone is a copolymer of stearic acid and catearyl methocone. 6. A cleansing cosmetic composition comprising a cationized silicone delivery system as claimed in claims 1 to 5 wherein the viscosity range of the cationized dimethiconol complex is 1 x 106to 50 x 106cp. and preferably 10 x 106 to 20 x 106cp. 7. A cleansing cosmetic composition comprising a cationized silicone delivery system as claimed in claim 1 to 6 wherein the viscosity range of the cationized dimethoconol complex is 10 x 106 to 20 x 106cp. 8. A cleansing cosmetic composition comprising a cationized silicone delivery system as claimed in claims 1 to 7 wherein the cationized high viscosity lower alkyl silicone fluid is with a cationized silicone gum and the fluid to gum ratio is x:1, with x varying from 0.1 to 20. 9. A cleansing cosmetic composition comprising a cationized silicone delivery system as claimed in claims 1 to 8 wherein the cationized high viscosity lower alkyl silicone fluid is with a cationized silicone gum and the fluid to gum ratio is 1:1. 10. A cleansing cosmetic composition comprising as claimed in claims 1 to 9 comprises : i. 0.1 to 20% cationized silicone delivery system ii. 20 to 85% by wt. detergent active and iii. optionally 0.001 to 10% by wt. cationic polymer 11. A cleansing cosmetic composition as claimed in claim 1 to 10 comprises 0.5 to 10% cationised silicone delivery system. 12. A cleansing cosmetic composition as claimed in claim 1 to 11 wherein the cationised silicone delivery system comprises an organic surfactant. 13. A cleansing cosmetic composition as claimed in claim 1 to 12 wherein the organic surfactant is selected from cationic, anionic and nonionic surfactants. 14. A cleansing cosmetic composition as claimed in claim 1 to 13 comprises 30 to 80% and preferably 40 to 70% by wt. Detergent active. 15. A cleansing cosmetic composition as claimed in claim 1 to 14 wherein the detergent active is anionic detergent active. 16. A cleansing cosmetic composition as claimed in claim 1 to 15 wherein the detergent active is soap. 17. A cleansing cosmetic composition as claimed in claim 1 to 16 comprises 0.001 to 10% by wt. cationic polymer. 18. A cleansing cosmetic composition substantially as herein described and illustrated with reference to the accompanying examples. Dated this 27th day of January 2004

Documents:

0109-mum-2003-cancelled page(18-3-2005).pdf

0109-mum-2003-claims(granted) (27-1-2004).pdf

0109-mum-2003-claims(granted)-18-03-2005.doc

0109-mum-2003-correspondence(20-5-2007).pdf

0109-mum-2003-correspondence-ipo-(20-1-2006).pdf

0109-mum-2003-form 1(29-1-2003).pdf

0109-mum-2003-form 19(27-1-2004).pdf

0109-mum-2003-form 2(granted)-(27-1-2004).pdf

0109-mum-2003-form 2(granted)-18-03-2005.doc

0109-mum-2003-form 3(27-1-2004).pdf

0109-mum-2003-form 3(29-1-2003).pdf

0109-mum-2003-form 5(27-1-2004).pdf

0109-mum-2003-form pct-isa-210(19-3-2003).pdf

0109-mum-2003-power of attorney(19-3-2003).pdf