专利名称：Diazo pigments
发明人：Egon Liedeck,Wolfgang Ruff,Gerhard
Berger,Peter Reiter
申请号：US06/077140申请日：19790919公开号：US04247296A公开日：19810127
摘要：A diazo pigment dye having the formula ##STR1## in which R.sub. 1 represents ahydrogen, chlorine or bromine atom or a nitro group, and< P>
R.sub.2 and R.sub.3 a hydrogen or chlorine atom or a methyl or methoxy group.
A new coupling component for preparing the pigment is also disclosed. The dyepossesses good tinctorial and advantageous environmental properties. Methods forpreparing the dye are disclosed.
申请人：BASF FARBEN & FASERN AG
代理机构：Toren, McGeady and Stanger
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