发明名称 Monoazo dyes prepn - from 2-amino naphthalene 1-sulphonic acid diazo component and phenyl pyrazole coupling components
摘要 <p>The dyes are of formula: (in which R1, R2 are halogen or opt. substd. alkyl or alkoxy, and the coupling component is free of -SO3H gps.) and they are suitable for dyeing or printing of natural or synthetic polyamides, cellulose or regenerated cellulose fibres, paper or leather. General fastness is good, levelling props. are excellent and they can be used with other acid dyes, e.g. anthraquinone dyes.</p>
申请公布号 DE2144243(A1) 申请公布日期 1972.04.13
申请号 DE19712144243 申请日期 1971.09.03
申请人 SANDOZ AG 发明人
分类号 C09B29/22;(IPC1-7):09B29/22 主分类号 C09B29/22
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