DE534465C - Process for the even dyeing of viscose fabrics made of viscose of physically or chemically uneven quality - Google Patents

Description

Process for the uniform dyeing of viscose fabrics made from viscose physically or chemically uneven texture when dyeing viscose fabrics with the dyes previously used for cotton, you usually get streaky, Uneven staining, also show streaks when staining with these dyes Viscose is processed into fabrics. This disadvantage is based on the physical or chemically uneven quality of the commercially available ones used for processing Viscose, which has a very different affinity for the same dye shows.

It has now been found that these inconveniences can be avoided and that viscose of such uneven quality can also be processed into fabrics whose coloring is completely uniform if the material is colored with dyes which contain a complex-bound metal in the molecule. Dyes with complexed copper or nickel are particularly suitable; but also other metals, such as cobalt, chromium, zinc, cadmium, silver, vanadium, etc., give the dyes in question a high degree of suitability for dyeing viscose of uneven quality in such a way that fabrics produced with them appear completely uniformly colored. Copper-containing dyes of this type are obtained, in addition to other methods, the z. B. also according to the procedures of the bri- table patents 288 307, 292 66o and 3o6 859. Nickel or cobalt amine complex azo compounds one can, among other things, application of nickel amine salts, such as. B. Nickelotetrammine sulfate, or of cobalt ammine salts, such as B. Carbonatoteträmmin- cobalt dichloride, instead of the copper amine complex salts in the process of the above mentioned British patent 3o6 859 place. The with the help of the complex-bound me- tall containing azo dyes produced Dyeing on viscose, especially on art silk jersey, stand out in good light- authenticity 'thanks to excellent uniformity from. Example 2 ° j "of the British method Patent 3o6 859 manufactured complex copper containing dye from aminobenzene-z-car- acid, 2-phenylamino-5-oxynaphthalene- 7-sulfonic acid and tetrammine cupric sulfate are dissolved in hot water. One colors vis- kösetrikot at 8o ° in the presence of 2o ° f. Glauber's salt and 2 ° j "soap (on the put goods calculated) about an hour long. One arrives at a beautiful strong ruby with excellent lightfastness and excellent lightfastness, both in light and in dark colors.

The dyestuff made from aminobenzene-2-carboxylic acid, coppered in substance and 2-benzoylamino-5-oxynaphthalene-7-sulfonic acid stains by the same method in a yellowish-red shade, the copper amine complex compound of the dye from 2 Mol. Aminobenzene-2-carboxylic acid, the urea of 2-amino-5-oxynaphthalene-7-sulfonic acid and tetrammine cupric sulfate stains in an orange-red hue; the copper amine complex compound of the dye from 2 mol. 4-chloro-i-aminobenzene-2-carboxylic acid, 5 # 5'-dioxy-2 # 2'-DinaphthylamÜ'-7 # 7'-disulfonic acid and tetrammine cuprisulfate stains blue-violet Clays. All of these dyes result in very lightfast colorations, which are characterized by excellent Distinguish evenness.

A violet with the same properties is obtained when one Complex copper-containing dye from 5-nitro-2-aminoi-methoxybenzene-q.-sulfonic acid and - 2- (¢ '-Methoxybenzoyl) -amino-5-oxynaphthalene-7-sulfonic acid in the specified Way dyes on viscose tricot made of rayon. An excellent, evenly scarlet Coloring is obtained when using a complex copper-containing dye from 2-aminoiphenolglycerol ether and 2- (q .'-methylbenzoyl) -amino-5-oxynaphthalene-7-sulfonic acid. Instead of the azo dyes those with a carboxyl group ortho to the azo group can also be used quite generally use with a carboxyl or hydroxyl group ortho to at least one azo group; the above-mentioned dyes with a methoxyl group ortho to an azo group can also be replaced by those with other alkyloxy, Aralkyloxy or. Aryloxy groups, which can also be substituted, are replaced.

Examples An extremely even, clear, reddish-tinged blue Viscose fabric is obtained if you choose the material of this fabric according to the information of the example colored with: 211, the complex copper-containing dye from 5-nitro-3-aminoq: cresol and i-amino-8-oxynaphthalene-2 # 4-disulfonic acid in Presence of tetrammine cupric sulfate. .

Instead of the dye mentioned, other metal complex-containing dyes can also be used Dyes from any o-aminophenols and i-amino-8-naphtholsulfonic acids for Use in the manufacture of evenly colored viscose fabrics. Example 3 With help the according to Example i with the addition of i% isobutylnaphthalenesulfonic acid (to the Weight of the goods to be dyed calculated) on rayon rayon tricot complex nickel-containing dye from 6-amino-i-oxybenzene-2-carboxylic acid, 'i -aminonaphthalene, i-Oxynaphthalene-5-sulfonic acid and nickelotetrammine sulfate are completely uniform Blue-black of excellent lightfastness. The same dye with complex-bound Cobalt provides a greenish black with similar properties. ' Instead of The dyes listed here can also be used with other complex nickel and cobalt-containing ones Use dyes.

Example q.

2 ° f "of the diazotized 5-nitro-2-aminophenol and 2-naphthylamine-5-sulfonic acid represented dye, in which complex-bound chromium according to one of the known Procedure is introduced are dissolved in hot water. One dyes viscose tricot So 'in the presence of 20% Glauber's salt and 2% soap (on the goods used calculated) for about an hour. One arrives at a beautiful, strong, both excellent in light as well as dark tones. evenly coloring green of great size Lightfastness.

The chromium-containing dye is obtained in an analogous manner from diazotized q-chloro-2-aminophenol-6-sulfonic acid and i- (3'-sulfophenyl) -3-methyl-5-pyrazolone an even, real pink, with the help of the chromium-containing dye diazotized i-amino-2-naphthol-q.-sulfonic acid and i-naphthol-8-sulfonic acid Uniform light blue, with the help of the chromium-containing azo dye from diazotized 2-aminobenzoic acid and 2-aminonaphthalene-7-sulfonic acid a uniform purple, with the help of the copper compound of the primary diazo dye. from i mol. 2 # q.-dichloroaniline, i Mo1. i-Amino-8-oxynaphthalene-3 # 6-disulfonic acid (acidic coupling) and 1 mole. 2-aminobenzoic acid (alkaline coupling) a uniform, lightfast blue.

Example s Dyeing viscose tricot with 2% of the copper-containing azo dye from 5-nitro-2-a-minophenol-f- 2- (q .'-methoxyphenyl) -amino-5-oxynaphthalene-7-sulfonic acid (by treating converted into the copper compound with copper sulfate in acetic acid solution), the result is an extremely even, reddish-tinged blue of excellent lightfastness replaces the copper-containing azo dye from a-aminophenol-q-sulfonic acid rt- 2-phenylamino-5-oxynaphthalene-7-sulfonic acid. A blue-violet with the same excellent properties is obtained when using the copper-containing azo dye from 5-nitro-4-chloro-a-aminophenol -j- 2-phenylamino-5-oxynaphthalene-7-sulfone- acid.

Claims (1)

PATENT CLAIM: Method of uniform dyeing of viscose fabrics made of viscose physically chemically or chemically uneven creation, characterized in that soluble aza dyes are used for this turns, which a heavy metal in com- plexer binding included.