Composition containing polysiloxane backbone grafted by non-sili

Details Composition containing polysiloxane backbone grafted by non-sili Composition containing polysiloxane backbone grafted by non-sili

1997-12-30

1999-12-28

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Live hair or scalp treating compositions

Polymer containing

424 7012, 424 7015, 424 7017, A61K 706

Patent

active

060078006

DESCRIPTION:

BRIEF SUMMARY
The present invention relates to a cosmetic or dermatological composition for the treatment of keratinous material, in particular human hair, comprising at least one grafted silicone polymer, containing a polysiloxane skeleton grafted with non-silicone organic monomers and at least one hydrocarbon which is liquid at room temperature, the hydrocarbon chain of which has from 11 to 26 carbon atoms, as well as its applications, in particular in the field of hair cosmetics.
The polymers of the type such as a polymer containing a polysiloxane skeleton grafted with non-silicone organic monomers are known for their styling properties. However, these polymers lead to unsatisfatory cosmetic properties when they are applied.
The Applicant has found, surprisingly, that by combining linear or branched, cyclic or acyclic hydrocarbons that are liquid at room temperature, in which the hydrocarbon chain has from 11 to 26 carbon atoms, with these types of polymer, the cosmetic properties are improved, in particular the disentangling of the hair and the softness to the touch while at the same time retaining the styling properties of these polymers.
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, containing a polysiloxane skeleton grafted with non-silicone organic monomers and at least one hydrocarbon which is liquid at room temperature, the hydrocarbon chain of which has from 11 to 26 linear or branched, cyclic or acyclic carbon atoms.
In the following text, in accordance with that which is generally accepted, the term silicone polymer is understood to denote any organosilicon polymer or oligomer with a branched or crosslinked, linear or cyclic 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 linkage .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, notably 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 may be linked, either directly or via a hydrocarbon radical, to the siloxane chain are, notably, 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 or acyloxyalkyl radicals, hydroxyalkylamino or aminoalkyl radicals, quaternary ammonium groups, amphoteric or betaine groups and anionic groups such as carboxylates, thioglycolates, sulphosuccinates, thiosulphates, phosphates and sulphates, this list not, of course, being limiting in any way (so-called "organomodified" silicones).
According to the present invention, the silicone polymer or polymers which must be used are those which comprise a main chain of silicone (or polysiloxane (.tbd.Si--O--).sub.n) on which is grafted, inside the said chain as well as optionally on at least one of its ends, at least one organic group containing no silicone.
These silicone polymers may be existing commercial products or may be obtained according to any means known to those skilled in the art, in particular by reaction between (i) a starting silicone correctly functionalized on one or more of these silicon atoms and (ii) a non-silicone organic compound which is itself correctly functionalized with a function which is capable of reacting with the functional group or groups carried by the said silicone, forming a covalent bond; a standard example of such a reaction is the hydrosilylation reaction between .tbd.Si--H groups and

REFERENCES:
patent: 5362485 (1994-11-01), Hayama et al.
patent: 5565193 (1996-10-01), Midha
patent: 5589162 (1996-12-01), Muraoka
patent: 5609856 (1997-03-01), Dubief
patent: 5658557 (1997-08-01), Bolich
English Language Derwent Abstract of EP 0 636 361.

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