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公开(公告)号:US3925427A
公开(公告)日:1975-12-09
申请号:US48641874
申请日:1974-07-08
Applicant: BASF AG
Inventor: ELSER WOLFGANG , EILINGSFELD HEINZ , SCHOCH WERNER
IPC: C09B1/00 , C07C225/36 , C09B1/50 , C09B1/54 , C07C97/26
Abstract: A process for the manufacture of blue anthraquinonoid disperse dyes based on 1,5(1,8)-diamino-4,8(4,5)-dihydroxyanthraquinone, wherein 1,5(1,8)-dinitro-4,8(4,5)-dimethoxy-anthraquinone or mixtures of these compounds are reduced, in 20 to 45% strength by weight oleum, with sulfur at -10* to +50*C in the presence of boric acid, and the product of the reduction is brominated in sulfuric acid or 0 to 5% strength by weight oleum or in organic solvents until the product thus obtained contains 12 to 30% by weight of bromine. Dyes which give deep and, in particular, light-fast dyeings, above all on fibrous materials consisting of linear polyesters, are obtained.
Abstract translation: 一种制备基于1,5(1,8) - 二氨基-4,8(4,5) - 二羟基蒽醌的蓝色蒽醌类分散染料的方法,其中1,5(1,8) - 二硝基-4,8( 4,5) - 二甲氧基 - 蒽醌或这些化合物的混合物在20-45%重量的发烟硫酸中与硫在-10℃至+ 50℃下在硼酸存在下还原,并且还原产物 在硫酸中溴化,或0〜5%重量的发烟硫酸或有机溶剂,直到由此获得的产物含有12至30重量%的溴。 得到深色的染料,特别是轻度染色,尤其是由线性聚酯组成的纤维材料上。