Use of polysulfide for the improvement of the color stability and/or color intensification of the colored fibers e.g. keratinic fibers (human hairs) and animal hairs e.g. wool, horse hair, angora hair and fur

摘要

Use of polysulfide (I) for the improvement of the color stability of the colored fiber. Use of polysulfide of formula (I) for the improvement of the color stability of the colored fiber. R3OH or H2N-CH(C(O)-R1)-CH2-S-S-CH2-CH(C(O)-R2)-NH-; R4H or -C(O)-A-COOH; A : bond or 1-20C bivalent (un)saturated aliphatic or aromatic hydrocarbon (substituted by halo, hydroxy or carboxy) (where a small bridge is present between 1-12C carbonyl and adjacent group A); R1, R2R5O- or H2N-CH(COOH)-CH2-S-S-CH2-CH(COOH)-NH-; R5H or 1-6C alkyl; and n : 1-100. Where one or more carboxyl group(s) is present in the form of one or more its salts. Independent claims are also included for: (1) a method to improve the color stability of the colored fibers (preferably keratinic fibers) comprising applying a composition comprising (I) on the fiber and rinsing after an impact time of 1-60 minutes, where during the improving effect, preferably at least one material of cystine, succinic acid, cationic polymers, oxidation pigments or direct pulling pigments are present; and (2) a composition for the improvement of the color stability of colored fibers comprising: (a) (I) (0.01-20 wt.%) and cationic polymer (0.05-20 wt.%); (b) (I) (0.01-10 wt.%) and oxidation pigment precursors (0.005-10 wt.%); or (c) (I) (0.01-10 wt.%) and direct pulling pigments (0.01-20 wt.%). [Image].