专利名称：Sulfur dyes, their preparation and their use,
as well as the intermediates for thepreparation of the sulfur dyes
发明人：PIESCH, STEFFEN, DR.,WEIDEMUELLER,
WOLF, DR.
申请号：EP81105054.1申请日：19810630公开号：EP0043537A1公开日：19820113
摘要：Leuco-indophenols or -indamines of the formula I where R<1> is hydrogen oralkyl of 1 to 8 carbon atoms, R<2> is hydrogen or halogen, R<3> is OH, NH2 or NHCO-alkyl having 1 to 4 carbon atoms in the alkyl moiety and R<4> is hydrogen, halogen oralkyl of 1 to 4 carbon atoms, obtained by reacting 3-aminocarbazoles of the formula V with compounds of the formula VI at 150-300 DEG C in the absence of oxygen, are usefulfor preparing sulphur dyes.
申请人：CASSELLA AKTIENGESELLSCHAFT
地址：Hanauer Landstrasse 526 D-60386 Frankfurt DE
国籍：DE
代理机构：Urbach, Hans-Georg, Dr.
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