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US 8,802,067 B2Granted
Comb polymers for the hair
AssigneeCoatex
InventorsJean-Marc Suau, Olivier Guerret
Life of this patent
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Abstract
Utilisation of (meth)acrylic comb copolymers with side chains of the hydroxy and alkoxy polyalkylene glycol type in which are present both ethylene oxide and propylene oxide links. These copolymers give a styling effect and an elimination of rinsing. The invention also relates to a cosmetic formulation containing such structures as well as a hair treatment process based on this formulation.
Claims13
A cosmetic formulation for treating hair comprising a (meth)acrylic comb copolymer, said comb copolymer comprising:
- a) at least one (meth)acrylic acid monomer;
- and
- b) at least two macromonomers of formula (I):
- R—(OCH2—CH(CH3))m(OCH2CH2)n—R′ (I)
- wherein variables m and n are integers between 10 and 90;
- wherein —(OCH2—CH(CH3))m(OCH2CH2)n— include block and statistical structures;
- wherein R designates a polymerizable unsaturated function;
- wherein R′ is a hydrogen atom, or an alkyl group having from 1 to 4 carbon atoms;
- wherein at least two side chains of the comb copolymer comprise the —(OCH2—CH(CH3))m(OCH2CH2)n—R′ segment of formula (I);
- wherein the (meth)acrylic acid monomers are 5% to 30% by weight of the comb polymer;
- and
- wherein the macromonomers of formula (I) are 70% to 95% by weight of the comb copolymer.
9 more elements
Dependencies are inferred from the claim text.