Claims
- 1. A composition for protecting the artificial colour of dyed hair from degradation by light and washing, consisting essentially of:
- a cosmetically acceptable medium; and
- 0.1 to 20% by weight, based on the total weight of the composition, of a thiol-functional polydiorganosiloxane having:
- (i) at least one unit of formula ##STR12## wherein R is a member selected from the group consisting of alkylene radicals having from 3 to 8 carbon atoms and groups of the formula
- C.sub.n H.sub.2n O(C.sub.x H.sub.2x O).sub.p --COC.sub.m H.sub.2m --
- wherein n is a whole number ranging from 1 to 18, m is a whole number ranging from 1 to 8, x is 2 or 3 and when x is 3 the C.sub.3 H.sub.6 radical is branched, and p is equal to 0 or a number up to 40,
- R' is a member selected from the group consisting of alkyl radicals having 1 to 6 carbon atoms, alkoxy radicals having 1 to 4 carbon atoms, and a trimethylsilyloxy radical,
- a is an integer equal to 0, 1 or 2, and
- (ii) the remaining units being selected from
- (a) units of formula ##STR13## wherein R" is a member selected from the group consisting of C.sub.1 -C.sub.18 alkyl groups, phenyl substituted (C.sub.1 -C.sub.6) alkyl groups and phenyl groups, b is an integer equal to 1, 2 or 3; and
- (b) mixtures of units of formula (II) and units of formula ##STR14## in which R" is as defined above and n is a whole number from 1 to 18; wherein at least 50% of the groups R' and R" represent a methyl group;
- the weight content of the thiol groups present in said polydiorganosiloxane is between 0.1 and 15%, based on the weight of the thiol-functional polydiorganosiloxane and the total number of units of formula (I), (II) and (III) ranges from 10 to 500.
- 2. The composition of claim 1 in which R is selected from the group consisting of:
- --(CH.sub.2).sub.3 --
- --(CH.sub.2).sub.3 O(CH.sub.2 --CH.sub.2 --O).sub.29 COC.sub.m H.sub.2m --
- --(CH.sub.2).sub.3 O(CH.sub.2 --CH.sub.2 O).sub.4 COC.sub.m H.sub.2m -- ##STR15##
- --(CH.sub.2).sub.3 O--COCH.sub.2 -- ##STR16##
- --(CH.sub.2).sub.12 ; and
- R' is --CH.sub.3 or trimethylsilyloxy; and
- R" is --CH.sub.3 or 2-phenylpropyl.
- 3. The composition of claim 1, wherein the weight content of the thiol groups in the thiol-functional polydiorganosiloxane ranges from 0.15 to 13% by weight, based on the weight of the thiol-functional polydiorganosiloxane.
- 4. The composition of claim 1, wherein said composition is in the form of an oily lotion, emulsion or aqueous or aqueous/alcoholic dispersion.
- 5. The composition of claim 1, wherein said composition is in the form of an oily lotion further containing mineral, vegetable, animal or synthetic oils.
- 6. The composition of claim 5, wherein the oils are selected from the group consisting of the silicone oils and the isoparaffins.
- 7. The composition of claim 6, wherein the silicone oils are oils of linear or cyclic structure selected from the group consisting of the polyalkylsiloxanes, the polyarylsiloxanes, the polyalkylarylsiloxanes and their mixtures.
- 8. The composition of claim 1, wherein said composition is in the form of an oily lotion further containing waxes, resins or silicone gums.
- 9. The composition of claim 1, wherein said composition is in the form of a nonionic or cationic emulsion.
- 10. The composition of claim 9, comprising a fatty phase of the emulsion which consists of the thiol-functional polydiorganosiloxane or of a mixture of said thiol-functional polydiorganosiloxane with one or more oils or waxes.
- 11. The composition of claim 9, wherein said composition is in the form of a nonionic emulsion containing a nonionic emulsifier selected from the group consisting of the polyoxyethylenated fatty alcohols, the polyoxyethylenated fatty acids, esters of sorbitan, the polyoxyethylenated esters of sorbitan, the polyoxyethylenated fatty amides, the polyglycerolated fatty amides, the polyoxyethylenated alkylphenols, the polyglycerolated alkylphenols, the polyglycerolated alpha-diols and polyglycerolated fatty alcohols.
- 12. The composition of claim 9, wherein said composition is in the form of a cationic emulsion containing a cationic emulsifier selected from the group consisting of the quaternary ammonium halides.
Parent Case Info
This is a continuation of U.S. application Ser. No. 08/353,394, filed Dec. 2, 1994, now pending.
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Continuations (1)
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Number |
Date |
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Parent |
353394 |
Dec 1994 |
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