Use of polycarboxylic acid compounds for the treatment of fibrious amino acid based substrates, especially hair

A method for the color and shape treatment of hair, preferably for the color treatment of hair, which comprises the step of applying a polyorganosiloxane of formula (A) having an average number of 2 to 1000 siloxy units selected from the siloxy groups of the formulas:

• wherein
• R is selected from R1 and RF, wherein
• R1 is selected from organic groups bound to the silicon atoms by a carbon atom, and two groups R1 may form a bridging group between two silicon atoms,
• RF is selected from organic groups different from R1 and is bound to the silicon atoms by a carbon atom, and RF contains at least one functional group F selected from:
• —O—C(O)—R3—C(O)OH, and
• NR4—C(O)—R3—C(O)OH, and
• wherein the groups F bind to a carbon atom, wherein
• R3 is selected from a single bond or optionally substituted straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon radicals which have up to 100 carbon atoms, which optionally contain one or more groups selected from —O—, —C(O)—, —C(S)—, tertiary amino groups
• and quaternary ammonium groups
• with the proviso that R3 is not —CH═CH—, and
• R4 is selected from the group consisting of hydrogen, or optionally substituted straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon radicals which have up to 100 carbon atoms which optionally contain one or more groups selected from —O—, —NH—, —C(O)—, —C(S)—, tertiary amino groups
• and quaternary ammonium groups
• or a compound of formula (B):
• R2(—F)2-18 (B)
• wherein
• R2 is selected from divalent to octadecavalent, optionally substituted hydrocarbon radicals which have up to 100 carbon atoms, and may contain optionally one or more groups selected from —O—, —NH—, —C(O)—, —C(S)—, tertiary amino groups
• and quaternary ammonium groups
• and F is as defined above,
• or salts of said polyorganosiloxanes of formula (A) or said compound of formula (B),
• to said hair.

A compound (B) of the formula:

• R2(—F)2-18
• wherein
• R2 is selected from divalent to octadecavalent, optionally substituted hydrocarbon radicals which have up to 100 carbon atoms, and may contain optionally one or more groups selected from —O—, —NH—, —C(O)—, —C(S)—, tertiary amino groups
• and quaternary ammonium groups
• and
• F is selected from:
• —O—C(O)—R3—C(O)OH, and
• —NR1—C(O)—R3—C(O)OH,
• the groups F bind to a carbon atom of R2,
• wherein
• R1 is selected from the group consisting of hydrogen, or optionally substituted straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon radicals which have up to 100 carbon atoms which optionally contain one or more groups selected from —O—, —NH—, —C(O)—, —C(S)—, tertiary amino groups
• and quaternary ammonium groups
• R3 is selected from a single bond or optionally substituted straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon radicals which have up to 100 carbon atoms, which optionally contain one or more groups selected from —O—, —NH—, —C(O), —C(S)—, tertiary amino groups
• and quaternary ammonium groups
• with the proviso that R3 is not —CH═CH—,
• and salts thereof.

A polyorganosiloxane (A) having an average number of 2 to 1000 siloxy units selected from the siloxy groups of the formulas:

• wherein
• R is selected from R1 and RF, wherein
• R1 is selected from organic groups bound to the silicon atoms by a carbon atom, and two groups R1 may form a bridging group between two silicone atoms,
• RF is selected from organic groups different from R1 and is bound to the silicon atoms by a carbon atom, and RF contains at least one functional group F selected from:
• —O—C(O)—R3—C(O)OH, and
• —NR4—C(O)—R3—C(O)OH, and
• wherein the groups F bind to a carbon atom, wherein
• R3 is selected from a single bond or optionally substituted straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon radicals which have up to 100 carbon atoms, which optionally contain one or more groups selected from —O—, —NH—, —C(O)—, —C(S)—, tertiary amino groups
• and quaternary ammonium groups
• with the proviso that R3 is not —CH═CH— or —CH2—CH2—, and
• R4 is selected from the group consisting of hydrogen, or optionally substituted straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon radicals which have up to 100 carbon atoms which optionally contain one or more groups selected from —O—, —NH—, —C(O)—, —C(S)—, tertiary amino groups
• and quaternary ammonium groups