| 摘要 |
A cosmetic compsn. for the first stage of permanent waving of keratinous matter, esp. hair, involving reducing the disulphide bonds of the keratin, contains (a) an agent for reducing the di-sulphide keratin bonds, (b) ornithine, lysine or arginine as alkalising agent, and (c) a cationic polymer contg. prim., sec. or tert. amine gps. or quat. ammonium gps. in the main chain. Pref. the cpds. are sulphites, bisulphites and/or thiols (pref.), esp. cysteine or derivs., cysteamine or derivs., or 3-mercapto- propionic, thiolactic or thioglycolic acid or their ester or salts, opt. associated with a disulphide, and used in amt. of 1-20 (5-15)wt.% of the compsn.; (b) Arginine is pref. opt. with other alkalising agent, e.g. NH4OH, monoethanolamine or a carbonate, esp. to neutralise the acid reducing agents, in amt. of 0.1-18% of the reducing compsn.; (c) The polymer (i) contains piperazinyl units and (hydroxy)- alkylene units, opt. broken by O, S, N or aromatic or heterocyclic rings, and opt. the oxidn. or quaternisation derivs., (ii) is a water-sol. polyaminoamide, opt. cross-linked and/or alkylated, (iii) is a deriv. of a polyaminoamide obtd. by condensn. of polyalkylene polyamines and polycarboxylic acids, followed by alkylation with bifunctional agents. |
