Verfahren zur Erhoehung der Farbstoffaffinitaet von Fasermaterialien aus natuerlichen Polyamiden
1,271,482. Dyeing natural polyamides. FARBENFABRIKEN BAYER A.G. 23 Feb., 1970 [27 Feb., 1969], No. 8550/70. Heading D1B. [Also in Division C2] The anionic dyestuff affinity of fibre materials of natural polyamides is increased by treating in an aqueous bath containing a watersoluble polyamide obtain...
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Main Authors | , , |
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Format | Patent |
Language | German |
Published |
17.09.1970
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Subjects | |
Online Access | Get full text |
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Summary: | 1,271,482. Dyeing natural polyamides. FARBENFABRIKEN BAYER A.G. 23 Feb., 1970 [27 Feb., 1969], No. 8550/70. Heading D1B. [Also in Division C2] The anionic dyestuff affinity of fibre materials of natural polyamides is increased by treating in an aqueous bath containing a watersoluble polyamide obtained by reacting an aliphatic polyamine of formula I in which R and R, independantly of one another stand for hydrogen, a C 1 to C 5 alkyl group or a hydroxylalkyl group with I to 3 carbon atoms, X is a bivalent optionally substituted aliphatic radical with 1 to 6 carbon atoms and n is an integer 1 to 4 with an α,#-unsaturated aliphatic mono-carboxylic acid or with an aliphatic polycarboxylic acid which may contain a hetero atom or with a halide, amide, anhydride or ester. Mordant and acid dyes are used to dye the natural polyamides. The preferred polyamine used is bis-(3-amino-propyl-) methyl-amine and carboxylic acids used are acrylic acid, methacrylic acid, succinic acid, adipic acid, maleic acid and diglycollic acid. |
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Bibliography: | Application Number: DE19691909963 |