Process for treating keratin fibres using at least one oil bearing acetoacetate functions

A method for treating keratin fibers, comprising applying to the keratin fibers a composition comprising:

• i) one or more compounds of formula (I), optical or geometrical isomers thereof, and/or solvates thereof, or mixtures thereof:
• wherein in formula (I):
• Z represents a linear or branched, saturated or unsaturated, conjugated or non-conjugated, acyclic or cyclic, aromatic or non-aromatic multivalent C2 to C40 hydrocarbon-based radical, Z being optionally interrupted with one or more groups or heteroatoms chosen from —O—, —N(Ra)—, —S—, —C(O)—, (hetero)cycles, or combinations thereof;
• AK1 represents a divalent saturated or unsaturated, linear or branched C1-C12 hydrocarbon-based chain;
• AK2 represents a linear or branched, saturated or unsaturated, C1-C40 monovalent hydrocarbon-based chain, optionally substituted with one or more identical or different radicals chosen from —OR or —X-AK3-(O—C(O)—C(Ra)(Rb)—C(O)—R4)v;
• and/or said chain being optionally interrupted with one or more heteroatoms or groups chosen from —O—, —S—, —C(O)—, (hetero)cycle(s), or combinations thereof;
• AK3 represents a divalent linear or branched, saturated or unsaturated C1-C12 hydrocarbon-based chain;
• R represents a hydrogen atom, a linear or branched, saturated or unsaturated C1-C6 alkyl radical or a radical —C(O)—C(Ra)(Rb)—C(O)—R4;
• X represents —O—, —S—, —O—C(O)— or —C(O)—O—;
• Y represents —O—C(O)— or —C(O)—O—;
• R4 represents a linear or branched, saturated or unsaturated C1-C6 monovalent hydrocarbon-based radical;
• Ra and Rb are independently chosen from a hydrogen atom or a (C1-C4)alkyl group;
• p denotes an integer equal to 0 or 1;
• m denotes an integer equal to 0, 1, 2, 3 or 4;
• with the proviso that when m is greater than 1, then the radicals —Y-AK2 are identical or different;
• n denotes an integer equal to 0, 1, 2, 3 or 4;
• with the proviso that when n is greater than 1, then the radicals —(O)t-(AK1)q-(O—C(O)—C(Ra)(Rb)—C(O)—R4)u are identical or different;
• t denotes an integer equal to 0 or 1;
• q denotes an integer equal to 0 or 1;
• u denotes an integer equal to 1, 2 or 3;
• v denotes an integer equal to 1, 2 or 3;
• with the proviso that if q is equal to 0 then t is equal to 0, (m+n) is greater than or equal to 1, and said compound comprises at least two groups —C(O)—C(Ra)(Rb)—C(O)—R4;
• and
• optionally ii) one or more crosslinking agents.

A composition for treating keratin fibers comprising:

• i) one or more compounds of formula (I), optical or geometrical isomers thereof, and/or solvates thereof, or mixtures thereof:
• wherein in formula (I):
• Z represents a linear or branched, saturated or unsaturated, conjugated or non-conjugated, acyclic or cyclic, aromatic or non-aromatic multivalent C2 to C40 hydrocarbon-based radical, Z being optionally interrupted with one or more groups or heteroatoms chosen from —O—, —N(Ra)—, —S—, —C(O)—, (hetero)cycles, or combinations thereof;
• AK1 represents a divalent saturated or unsaturated, linear or branched C1-C12 hydrocarbon-based chain;
• AK2 represents a linear or branched, saturated or unsaturated, C1-C40 monovalent hydrocarbon-based chain, optionally substituted with one or more identical or different radicals chosen from —OR or —X-AK3-(O—C(O)—C(Ra)(Rb)—C(O)—R4)v;
• and/or said chain being optionally interrupted with one or more heteroatoms or groups chosen from —O—, —S—, —C(O)—, (hetero)cycle(s), or combinations thereof;
• AK3 represents a divalent linear or branched, saturated or unsaturated C1-C12 hydrocarbon-based chain;
• R represents a hydrogen atom, a linear or branched, saturated or unsaturated C1-C6 alkyl radical or a radical —C(O)—C(Ra)(Rb)—C(O)—R4;
• X represents —O—, —S—, —O—C(O)— or —C(O)—O—;
• Y represents —O—C(O)— or —C(O)—O—;
• R4 represents a linear or branched, saturated or unsaturated C1-C6 monovalent hydrocarbon-based radical;
• Ra and Rb are independently chosen from a hydrogen atom or a (C1-C4)alkyl group;
• p denotes an integer equal to 0 or 1;
• m denotes an integer equal to 0, 1, 2, 3 or 4;
• with the proviso that when m is greater than 1, then the radicals —Y-AK2 are identical or different;
• n denotes an integer equal to 0, 1, 2, 3 or 4;
• with the proviso that when n is greater than 1, then the radicals —(O)t-(AK1)q—(O—C(O)—C(Ra)(Rb)—C(O)—R4)u are identical or different;
• t denotes an integer equal to 0 or 1;
• q denotes an integer equal to 0 or 1;
• u denotes an integer equal to 1, 2 or 3;
• v denotes an integer equal to 1, 2 or 3;
• with the proviso that if q is equal to 0 then t is equal to 0, (m+n) is greater than or equal to 1, and said compound comprises at least two groups —C(O)—C(Ra)(Rb)—C(O)—R4;
• and optionally ii) one or more crosslinking agents.