DE746185C - Process for dyeing mixtures of animal fibers and natural or synthetic cellulose fibers - Google Patents

Description

Process for dyeing mixtures of animal fibers and natural or artificial cellulose fibers It has been found that valuable dyeings can be obtained of good fastness properties on mixtures of animal fibers with natural ones or artificial cellulose fibers can be obtained by using disazo dyes from the Composition A-N = N-B-N = N-C, where A is the residue of an aminooxynaphthalene, its The hydroxyl group is not in the ortho position to the azo group, B the remainder of a in the para position oxy-group-free amines of the benzene or naphthalene series coupled to the amino group, C the remainder of the 2- (4-oxy-3'-carboxyphenylamino) - coupled to the naphthalene side 5 - oxvnaphtlhalin - 7 -sulfonic acid means, the dye components so should be chosen that the finished dye has at least two solubilizing groups contains, applies to the fiber and the dyeings obtained are treated with metal salts. The violet, blue and black-blue colorations obtained are distinguished good fastness properties, in particular due to good light fastness and good wet fastness, from, furthermore by the fact that the different fibers match well with one another in color. In terms of these properties, they are based on the same fiber mixtures in a known manner produced dyeings with metal complex-forming azo dyes are superior.

For the metal salt treatment, salts of aluminum, copper, Cobalts, nickel, chromium, manganese and mixtures of these salts.

Example I I kg of a mixed yarn made of I part wool and I part viscose wool Viscose is treated in a bath containing 2o g of the dye I-amino-7-oxynaphthalene-3-sulfonic acid # I-amino-2,5-dimethoxybenzene # 2-. (3'-Oxy -4-carboxyphenylamino) -5-oxynaphthalene -7-sulfonic acid and contains 500 g of sodium sulfate in 30000 cc of water.

You go into the lukewarm bath, drive to the boiling point, add 6 g of the condensation compound of octoclecyl alcohol and 2o mol of ethylene oxide, 3o g ammonium sulphate and Iog glacial acetic acid are added, treated for ¾ hours at boiling temperature, ¾ Hours at a falling temperature, rinses and treats for 1 hour at 90 ° C in one Bath, the 17.5 g of copper sulfate. 20 g chromium acetate and 10 g glacial acetic acid to 30,000 cc contains, rinses and dries.

Medium blue of very good and good lightfastness is obtained Wash and perspiration fastness.

Example e I kg of a mixed fabric made from equal parts of wool and rayon from viscose is treated in a bath containing 2og of the dye I - amino-8-oxynaphthalene-3, 6-disulfonic acid # I-Amnino-2-methoxy-5-methylbenzene # 2- (3'-Oxy-4'-carboxyphenylamino) -5-oxynaphthalene-7-sulfonic acid, Contains 5oo g of sodium sulfate in 3,000 ccm of water.

It is lukewarm, driven to boiling temperature, 6 g of the condensation compound are added from 20 moles of ethylene oxide and octodecyl alcohol, 3o g of ammonium sulfate and 10 g of glacial acetic acid added, treated ¾ hours at boiling temperature, s¾4 hours at decreasing temperature, rinsed and treated for 1 hour at 90 ° C. with 17.5 g of copper sulfate. 20 g chromium acetate and 10 g of glacial acetic acid in 30,000 cc of water, rinses and dries. One receives a Medium blue with very good real properties.

The following compilation shows the color tones of a number of other colorings obtainable according to the present invention. according to color on mixed Starting dye treats wool and fiber with artificial or natural cellulose I-amino-7-oxynaphthalene-3-sulfonic acid # I-amino copper sulfate blue 2-ethoxynaplhthalene-6-sulfonic acid # 2- (d'-oxy-3'-carb- and oxyphenylamino) -5-oxynaphthalene-7-sulfonic acid chromium acetate I-amino-7-oxynaphthalene-3-sulfonic acid # I-amino copper sulfate reddish blue 2, 5-diethoxybenzene # 2- (4'-oxy-3'-carboxyphenyl and amino) -5-oxynaphthalene-7-sulfonic acid chromium fluoride 2-Amino-5-oxynaphthalene-7-sulfonic acid - # - I-amino copper sulfate dark blue 2,5-dimethoxybenzene - # 2- (4'-oxy-3'-carboxyphenyl- amino) -5-oxynaphthalene-7-sulfonic acid 2-Amino-8-oxynaphthalene-6-sulfonic acid - # I-amino copper sulfate muted blue naphthalene-7-sulfonic acid # 2- (4'-oxy-3'-carboxyphe- and ny lamino) -5-oxynaphthalene-7-sulfonic acid chromium acetate I-Amino-5-oxynaphthalene-7-sulfonic acid - # 2-Amino-chromium acetate purple 4-methylphenoxyacetic acid # 2- (4'-oxy-3'-carboxy- phenylamino) -5-oxynaphthalene-7-sulfonic acid Copper sulfate reddish blue the same. and Chromium acetate I-amino-5-oxynaphthalene-7-sulfonic acid # I-amino copper sulfate dark purple blue 2-methyl-5-methoxybenzene # 2- (4'-oxy-3'-carboxy- and phenylamino) -5-oxynaphthalene-7-sulfonic acid chromium acetate I-amino-5-oxynaphthalene-7-sulfonic acid - # I-amino copper sulfate reddish blue 2, 5-diethoxybenzene # 2- (4'Oxy-3'-carboxyphenyl- and amino) -5-oxy naphthalene-7-sulfonic acid chromium acetate I-amino-7-oxynaphthalene-3-sulfonic acid # I-amino copper sulfate reddish blue 2-methoxy-5-methylbenzene # 2- (4'-oxy-3'-carboxy- and phenylamino) -5-oxynaphthalene-7-sulfonic acid chromium acetate

Claims (1)

A method for dyeing mixtures of animal fibers and natural or artificial cellulose fibers, characterized in that disazo dyes of the composition AN - N-8- \ _ @ -C. where A is the remainder of a - @ m @ noox @ -naplithalin, the hydroxyl group of which is not in the ortho position to the azo group, B the remainder of an oxy group-free amine of the benzene or naphthalene grater coupled in the para position to the amino group, C the remainder of the 2 - (4'-Oxy-3'-carboxyphenylamino) -5-oxynaphthalene-7-sulfonic acid mean, the dye components are to be chosen so that the finished dye contains at least two solubilizing groups, applies to the mixed fiber and the resulting dyeings with Treated metal salts. To distinguish the subject matter of the application from the prior art, the following publications were taken into account in the grant procedure: British patents .... No. 483 564, 484796.