申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0048538A1
公开(公告)日:1982-03-31
Water-soluble azo dyes which, in the form of the free acids, contain either one or two groups of the formula:
wherein Z represents an oxygen atom or a direct link and either one or two residues of the formula:
wherein X represents -S- or -NR1 and each of R and R' independently, denotes an alkyl radical which may carry a non-aromatic substituent.
These dyes are valuable for colouring polyamides giving yellow shades with good fastness to light and wet treatments.
水溶性偶氮染料,其游离酸形式含有一个或两个式中的基团:
其中 Z 代表氧原子或直接连接,以及一个或两个式中的残基:
其中 X 代表-S-或-NR1,R 和 R'各自独立地表示烷基,可带有非芳香族取代基。
这些染料可用于聚酰胺的着色,产生耐光性和耐湿性良好的黄色色调。