| 摘要 |
1,125,684. Dyeing hydrophobic materials with monoazo dyes. FARBENFABRIKEN BAYER A.G. 17 Feb., 1967 [17 Feb., 1966; 12 Jan., 1967], No. 7723/67. Heading D1B. Hydrophobic materials are dyed or printed with azo dyes which are free from SO 3 H groups, of the formula:- wherein K represents the radical of a coupling component, Y represents H, unsubstituted or substituted alkyl, aralkyl or aryl, Br, NO, R 2 R 5 | | CN, CF 3 , -SO 2 R 1 , -SO 2 N-R 3 , -COR 4 , -N-R 6 or -OR 1 -where R 1 is an unsubstituted or substituted alkyl, aralkyl or aryl; R 2 and R 3 are H or are substituents which together may form part of a heterocyclic ring; R 4 is H, OH, R 2 | R 1 , OR 1 or -N-R 3 ; R 5 is an acyl group, and R 6 is H, or unsubstituted or substituted alkyl, cycloalkyl, aralkyl or aryl or the group R 5 ; R 5 and R 6 may together form part of a heterocyclic ring; and the nucleus A may contain further substituents except SO 3 H groups. Specified fibres are aromatic polyesters, cellulose triacetate, cellulose-2¢-acetate, synthetic superpolyamides and -polyurethanes, polymers or copolymers of acrylonitrile and polyolefines, and also natural fibres such as cotton, wool and silk or mixed fabrics of the hydrophobic fibres with one another. Examples are given for dyeing polyester, cellulose triacetate, superpolyamide, polyamide and polyacrylonitrile fibres. |
