申请人:Clairol Incorporated
公开号:US06409773B1
公开(公告)日:2002-06-25
Couplers for hair coloring compositions for oxidative dyeing of hair are compounds of the formula at least one coupler comprising a compound of the formula (1):
wherein R is selected from of C1 to C2 alkyl and hydroxyethyl, R1 and R2 are each independently selected from the group consisting of C1 to C5 alkyl, C3 to C6 cycloalkyl, C1 to C5 alkoxy, C1 to C5 hydroxyalkyl, C1 to C5 hydroxyalkoxy, or R1 and R2 together with the carbon atom to which they are attached form a C3 to C6 cycloalkyl group.
用于氧化染发的染发组合物的偶联剂是公式至少包含公式(1)化合物的偶联剂:
其中,R选自C1到C2烷基和羟乙基,R1和R2各自独立地选自C1到C5烷基,C3到C6环烷基,C1到C5烷氧基,C1到C5羟基烷基,C1到C5羟基烷氧基,或R1和R2与它们所连接的碳原子一起形成C3到C6环烷基。