Verfahren zur Erhoehung der Farbstoffaffinitaet von Fasermaterialien aus natuerlichen Polyamiden

• Main Authors: EGUN TAMER, UDO HENDRICKS,DR, MATHIEU QUAEDVLIEG,DR
• Format: Patent
• Language: German
• Published: 17.09.1970
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM; DYEING OR PRINTING TEXTILES; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS

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.