| 摘要 |
<p>Imidazolylmethyl-substd. dyes of formula (I) are new. In (I) R1 is H, 1-6C alkyl or 2-6C alkenyl; R2 and R3 are H, 1-5C alkyl or 2-5C alkenyl; R4 is 1-12C alkyl or 2-4C hydroxyalkyl; X is an equiv. of an anion; D is a (m+n)-valent residue of a mono-, dis- or polyazo dye, a quinophthalone, a bisdioxazine, a 5-6-arylo-2-pyrone cpd., a naphtholactam, triphenylmethane or xanthene dye, a phthalocyanine, an indigoid, an anthraquinone dye contg. at least one phenyl or naphtyl gp., a higher fused- ring carbonyl dye, a quinacridone, a perylene-3,4,9,10-tetra- carboxylic diimide, an anthra-pyrimidine, a pyrazolo- anthrone, a diamino-naphthoquinone, a naphthazarin or a naphthalene-1,4,5,8-tetra-carboxylic diimide; m is 0-5; n is 0-5; m+n is 1-5). (I) are useful as cationic dyes for cellulosic fibre materials, esp. for prodn. of coloured paper with good wet fastness. Dyeing with high tinctorial strength are obtd., and waste waters are practically colourless. Paper coloured with (I) where D is a phthalocyanine residue can be decolorised with chlorine bleaches, thus facilitating waste paper processing.</p> |
