申请人:BASF SE
公开号:WO2016146813A1
公开(公告)日:2016-09-22
The invention relates to cationic direct dyes of the formula I (1), wherein m and n are independently from each other 0 or 1, D is an aromatic or a cationic heteroaromatic group, which are further specified, K is an aromatic or heteroaromatic group, E1 and E2 are independently from each other =CH- or =N-, An is an anion and a is a number from 1 to 6 and R1 and R2 are independently from each other and further specified. The compounds show washfastness at hair-dying.
这项发明涉及公式I(1)的阳离子直接染料,其中m和n分别独立于0或1,D是芳香或阳离子杂芳基,进一步具体说明,K是芳香或杂芳基,E1和E2分别独立于=CH-或=N-,An是阴离子,a是1到6之间的数字,R1和R2分别独立于彼此并进一步具体说明。这些化合物在染发时表现出良好的耐洗性。