| 摘要 |
<p>1,272,291. Reactive metallized disazo dyes. IMPERIAL CHEMICAL INDUSTRIES Ltd. 31 Dec., 1969 [16 Jan., 1969], No. 2663/69. Heading C4P. The invention comprises reactive dyes of formula wherein D is the residue of a metallized monoazo compound containing at least one SO 3 H group, either R and R 1 are H or C 1-4 alkyl and X is phenylene, diphenylene or naphthylene which may be substituted or an alkylene radical or is 1,4-piperazinylene. The dyes are prepared by metallizing the appropriate disazo dyes or by the usual condensation reactions of aminoazo dyes, amines and halotriazines. The dyes may be used to colour cellulose materials by the usual reactive dyeing processes in yellow, red and blue shades.</p> |
