申请人:L'Oreal
公开号:US05034015A1
公开(公告)日:1991-07-23
Process for dyeing keratin fibres consisting in applying on these fibres a composition (A) containing at least one indole colorant of formula: ##STR1## where R.sub.1 =H or C.sub.1 -C.sub.4 alkyl; R.sub.2 and R.sub.3, which may be identical or different, denote H, C.sub.1 -C.sub.4 alkyl, carboxyl or alkoxycarbonyl; or a salt or a precursor of a compound (I), associated, either with iodide ions, or with H.sub.2 O.sub.2 ; application of composition (A) being preceded or followed by the application of a compound (B) which contains, either H.sub.2 O.sub.2 at a pH of 2 to 12 when (A) contains iodide ions, or iodide ions at a pH of 2 to 11 when (A) contains H.sub.2 O.sub.2. This process allows particularly powerful and resistant dyes to be made.
将角蛋白纤维染色的过程包括在这些纤维上施加一种含有至少一种吲哚染料的组合物(A)的步骤,该染料的化学式为:其中R.sub.1 =H或C.sub.1 -C.sub.4烷基;R.sub.2和R.sub.3,可能相同也可能不同,表示H、C.sub.1 -C.sub.4烷基、羧基或烷氧羰基;或者与碘化物离子或H.sub.2 O.sub.2关联的化合物(I)的盐或前体;在施加组合物(A)之前或之后,施加含有化合物(B)的步骤,该化合物(B)包含H.sub.2 O.sub.2,当(A)含有碘化物离子时pH为2至12,或者在pH为2至11时含有碘化物离子,当(A)含有H.sub.2 O.sub.2时。这个过程可以制造出特别强效和耐用的染料。