申请人:L'Oreal
公开号:US04305717A1
公开(公告)日:1981-12-15
Dye compositions comprising a coupler having to the formula ##STR1## in which formula R.sub.1 and R.sub.2 are identical or different and represent a hydrogen atom or an alkyl radical having 1 to 2 carbon atoms and n represents a number equal to 1 or 2 and a paraphenylenediamine. This coupler is particularly suitable for use in a dyeing composition comprising paraphenylenediamines responding to the formula ##STR2## or the corresponding acid salts; formula in which R.sub.1, R.sub.2 and R.sub.3 are identical or different and represent a hydrogen atom, an alkyl or alkoxy radical having 1 to 2 carbon atoms, R.sub.4 and R.sub.5 are identical or different and represent a hydrogen atom, a alkyl radical, hydroxyalkyl, alkoxyalkyl in which the alkoxy group comprises 1 to 2 carbon atoms, carbamylalkyl, mesylaminoalkyl, acetylaminoalkyl, ureidoaminoalkyl, carbethoxyaminoalkyl, the alkyl groups in R.sub.4 and R.sub.5 having 1 to 3 carbon atoms, with the reservation that R.sub.1 or R.sub.3 represents hydrogen when R.sub.4 and R.sub.5 do not represent a hydrogen atom.
染料组合物包括具有以下式##STR1##的偶联剂,其中式中R.sub.1和R.sub.2相同或不同,代表氢原子或具有1至2个碳原子的烷基基团,n代表等于1或2的数字,以及对苯二胺。该偶联剂特别适用于包括对苯二胺响应以下式##STR2##或相应酸盐的染料组合物中;式中R.sub.1、R.sub.2和R.sub.3相同或不同,代表氢原子、具有1至2个碳原子的烷基或烷氧基基团,R.sub.4和R.sub.5相同或不同,代表氢原子、烷基基团、羟基烷基、烷氧基烷基,其中烷氧基团包括1至2个碳原子,碳酰胺基烷基、甲磺基氨基烷基、乙酰氨基烷基、脲氨基烷基、羰基氨基烷基,R.sub.4和R.sub.5中的烷基基团具有1至3个碳原子,但R.sub.1或R.sub.3表示氢时,R.sub.4和R.sub.5不表示氢原子。