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    • 4. 发明授权
    • Imidazomethylene dyes
    • 咪唑亚甲基染料
    • US4472581A
    • 1984-09-18
    • US407892
    • 1982-08-13
    • Manfred PatschManfred Ruske
    • Manfred PatschManfred Ruske
    • C09B11/28C09B25/00C09B55/00C09B69/00C09B9/04C07D401/02
    • C09B25/00C09B69/00
    • Cationic dyes of the general formula ##STR1## where A and A' may be identical or different and are each a monovalent radical of a dye from the series comprising the azo or quinophthalone dyes, or A and A' independently of one another are each one of the radicals of the formulae ##STR2## R is C.sub.1 -C.sub.6 -alkyl, benzyl or aryl, R.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl or aryl, D' and D" are respectively a monovalent and a divalent radical of a dye from the series comprising the triphenylmethane or xanthene dyes, n is an integer .gtoreq.1 and m is an integer .gtoreq.1, the sum (n+m) being .ltoreq.10 on average, are soluble in dilute acids, and, when they are used for wet-end dyeing of paper, give bleeding-fast, bleachable dyeings and a colorless effluent.
    • 其中A和A'可以相同或不同并且各自为包含偶氮或喹酞酮染料或A和A'的系列中的染料的单价基团彼此独立的阳离子染料分别为 式中的基团R 1为C 1 -C 6 - 烷基,苄基或芳基,R 1为氢,C 1 -C 4 - 烷基或芳基,D'和D“分别为一价和二价 来自包含三苯基甲烷或呫吨染料的系列的染料的基团,n是整数> / = 1,m是整数> / = 1,平均值(n + m)平均为