| 摘要 |
<p>A composition (A) for oxidation dyeing of keratin fibres, especially human keratin fibres such as hair, comprises a dyeing medium containing (a) at least one of 2-n-propyl-para-phenylene diamine (PPD) and its acid addition salts as oxidation base and (b) at least one of meta-phenylenediamines of formula (I) and their acid addition salts as coupler. R1 = H, alkyl, monohydroxyalkyl or polyhydroxyalkyl; R2,R3 = H, alkyl, monohydroxyalkoxy or polyhydroxyalkoxy; R4 = H, alkoxy, aminoalkoxy, monohydroxyalkoxy, polyhydroxyalkoxy or 2,4-diaminophenoxyalkoxy (C number not specified); alkyl moieties have 1-4C, except that polyhydroxyalkyl or polyhydroxyalkoxy has 2-4C. Also claimed are: (1) a keratin fibres dyeing method involving applying (A) and developing the colour, at acid, neutral or alkaline pH, using an oxidising agent (preferably hydrogen peroxide, urea peroxide, alkali metal bromate or per-salt such as perborate or persulphate) which is added to (A) just before use or added in a separate composition applied simultaneously or sequentially; and (2) a multi-compartment dyeing kit having one compartment containing (A) and another compartment containing an oxidising composition.</p> |
