| 摘要 |
1334636 Dyeing hair THERACHEMIE CHEMISCH THERAPEUTISCHE GmbH 19 April 1972 [21 April 1971 18 Feb 1972] 18060/72 Heading D1B Human hair is dyed at 10‹-40‹C with a solution, emulsion or cream containing an oxidation dye, a reducing agent, an organic chelating agent and a thiocarbamide derivative of the general formula: wherein R is H or an C 1 -C 4 alkyl group. The oxidation dyes may contain diamines, phenols or aminophenols as developers or coupling component and pyrazolones as developing components. The specified reducing agents include sodium sulphite, thioglycollic or ascarbic acids or their sodium, potassium ammonium or ethanolamine salts. The organic chelating agents include hydroxyalkanediphosphonic acids aminotrimethylenephosphonic acid, 8- hydroxyquinoline, nitrilotriacetic acid, diethylenetriaminepentaacetic acid and ethylenediaminetetraacetic acid and their water-soluble salts. |
