Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Patent
1997-12-30
2000-05-02
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
424 7011, 424 7012, 424 70122, 424 70121, 424 7015, 424 7017, A61K 706
Patent
active
06056945&
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a cosmetic or dermatological composition for treating keratin substances, in particular human hair, this composition comprising at least one grafted silicone polymer comprising a polysiloxane portion and a portion consisting of a non-silicone organic chain, one of the two portions constituting the main chain of the polymer, the other being grafted onto the said main chain, and at least one thickening polymer or copolymer of (meth)acrylamide or of a (meth)acrylamide derivative, as well as to its applications.
Polymers of the grafted silicone polymer type comprising a polysiloxane portion and a portion consisting of a non-silicone organic chain, one of the two portions constituting the main chain of the polymer, the other being grafted onto the said main chain, are known for their hairstyling properties. They are particularly advantageous in haircare cosmetics since they give the hair hold. However, after they have been applied to the hair, their cosmetic properties are still unsatisfactory. It is observed that after applying these polymers, the hair has a coarse and crisp feel resulting from non-continuous distribution of the polymer along the hair fibres.
The Applicant has found, surprisingly, that the use of a crosslinked or non-crosslinked thickening polymer or copolymer of (meth)acrylamide or of a (meth)acrylamide derivative in haircare compositions containing a polymer of the grafted silicone polymer type comprising a polysiloxane portion and a portion consisting of a non-silicone organic chain, one of the two portions constituting the main chain of the polymer, the other being grafted onto the said main chain, makes it possible to improve, after it has been applied, the deposition of the grafted silicone polymer along the keratin fibres and to improve their cosmetic properties, in particular as regards their feel, while at the same time retaining the styling properties of the grafted silicone polymer.
The composition according to the invention is thus essentially characterized in that it contains, in a cosmetically or dermatologically acceptable medium, at least one grafted silicone polymer comprising a polysiloxane portion and a portion consisting of a non-silicone organic chain, one of the two portions constituting the main chain of the polymer, the other being grafted onto the said main chain, and at least one crosslinked or non-crosslinked thickening polymer or copolymer of (meth)acrylamide or of a (meth)acrylamide derivative.
The grafted silicone polymers according to the invention are preferably chosen from polymers having a non-silicone organic skeleton grafted with monomers containing a polysiloxane, polymers having a polysiloxane skeleton grafted with non-silicone organic monomers and mixtures thereof.
In the following text, in accordance with what is generally accepted, the term silicone or polysiloxane is understood to denote any organosilicon polymer or oligomer having a linear or cyclic, branched or crosslinked structure of variable molecular weight, obtained by polymerization and/or polycondensation of suitably functionalized silanes, and consisting essentially of a repetition of main units in which the silicon atoms are linked together by oxygen atoms (siloxane bonding .tbd.Si--O--Si.tbd.), optionally substituted hydrocarbon radicals being linked directly via a carbon atom to the said silicon atoms. The most common hydrocarbon radicals are alkyl radicals, especially C.sub.1 -C.sub.10 alkyl radicals, and in particular methyl, fluoroalkyl radicals, aryl radicals and in particular phenyl, and alkenyl radicals and in particular vinyl; other types of radicals which can be linked, either directly or via a hydrocarbon radical, to the siloxane chain are, especially, hydrogen, halogens and in particular chlorine, bromine or fluorine, thiols, alkoxy radicals, polyoxyalkylene (or polyether) radicals and in particular polyoxyethylene and/or polyoxypropylene, hydroxyl or hydroxyalkyl radicals, substituted or unsubstituted amine groups, amide groups, acyloxy radicals
REFERENCES:
patent: 5061481 (1991-10-01), Suzuki et al.
patent: 5219560 (1993-06-01), Suzuki et al.
patent: 5229435 (1993-07-01), Sakai et al.
patent: 5480634 (1996-01-01), Hayama et al.
English Language Derwent Abstract of EP 0 636 361.
English Language Derwent Abstract of FR 2 709 955.
Cauwet-Martin Daniele
Dubief Claude
Dupuis Christine
"L'Oreal"
Channavajjala Lakshmi
Page Thurman K.
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