3-Cyano or acyl-4-aryl-5-arylazo-6-hydroxypyridone-2 dyes
    41.
    发明授权
    3-Cyano or acyl-4-aryl-5-arylazo-6-hydroxypyridone-2 dyes 失效
    3-氰基或ACYL-4-ARYL-5-ARYLAZO-6-羟基吡啶二酮

    公开(公告)号:US4011208A

    公开(公告)日:1977-03-08

    申请号:US504876

    申请日:1974-09-11

    申请人: Hermann Burkhard

    发明人: Hermann Burkhard

    摘要: Compounds of the formula ##STR1## wherein R.sub.1 is a benzene or naphthalene diazo component,R.sub.2 is cyano or acyl, andR.sub.3 is phenyl, naphthyl or heterocyclyl, or a substituted derivative thereof, with the proviso that the molecule is free of sulfo groups,Have low solubility in water and are highly suited for dyeing and printing fibers and textiles of synthetic and semi-synthetic, hydrophobic, high molecular weight polymers such as polyesters, cellulose diacetate, cellulose triacetate and polyamides. The obtained dyeings are fast to light, sublimation, thermofixation, pleating, wet treatments, etc. and are stable to permanent press finishing.