DE886882C - Process for dyeing mixtures of structures made of synthetic high molecular weight polyamide compounds and fiber materials of animal origin or animalized fiber materials with acidic wool dyes - Google Patents

Description

Process for dyeing mixtures of structures made of synthetic materials higher molecular weight polyamide compounds and fibers of animal origin or animalized fibers with acidic wool dyes. You can dye structures from synthetic high molecular weight polyamide compounds, e.g. B. from threads, yarns and fabrics, by dyeing these structures with dyes that are used in wool and silk dyeing.

Synthetic high molecular weight polyamides can be obtained, for example, by heating monoaminoalkylcarboxylic acids or diamines and dibasic carboxylic acids or the amide-forming derivatives of the carboxylic acids mentioned. Compounds of this type and the structures obtainable therefrom are described in American patents 2,071,253, 2,130,523 and 2: 130,948, also in British patents 461 236, 461 237, 474 999 and 487 734 and in French patents 790 52 =, 824 548 and 827 798. Furthermore, polyamides can be obtained by reacting diisocyanates with compounds which contain at least 2 exchangeable hydrogen atoms in the molecule (cf. German patent specification 728 98z). By polymerizing monomeric lactams with more than six ring members by the process of German Patent 748 7.53 , products are also obtained which can be colored by the present process. Similar products are obtained if, according to the method of French patent specification 855 814, urethane compounds are heated either individually or together with other compounds capable of condensation with urethane compounds. In addition, polyamides are obtained when saturated dicarboxamides are heated with aliphatic saturated diamines or dichlorides.

It has now been shown that the polyamide compounds to the in the Wool and silk dyeing plants used acidic dyes in most cases have extremely high affinity, so that it does not work with mixtures made of fibrous materials made from polyamide compounds and animal fibers or animalized Fibers to dye both types of fibers equally deep in the usual dyeing method for wool. The polyamide artificial silk takes a very significant part of the acid dye bath of the dye so that the wool remains light, while the polyamide rayon shows a deep coloring. The situation is similar when dyeing mixed yarns Made of polyamide artificial silk with natural silk.

It has now been found that mixtures of fibrous materials are successful Made of polyamide compounds and animal or animalized fibers, fiber-like to dye when the dyebaths containing acidic wool dyes are fiber-affine adds water-soluble organic acids or their salts. This is where the wind up the dyes retained on the polyamide compounds in favor of the other fibrous materials. Some of the additives are also effective in neutral baths.

Examples of organic acids with affinity for fibers are: aromatic Sulphonic, carboxylic or sulphocarboxylic acids and their salts, e.g. B. salicylic acid, phthalic acid, i - Benzylaminobenzene - 4 - sulfonic acid, naphthalenesulfonic acids, benzylnaphthalenesulfonic acids, Naphthol sulfonic acids, anthracene sulfonic acids, sulfonic acids that are sulfonated by of phenol and condensation with -chlorobenzyl chloride, condensation products from naphthalene-2-sulfonic acid and formaldehyde, also condensation products higher molecular weight fatty acids with oxy- or aminoalkylsulfonic acids and aminoalkylcarboxylic acids, for example oleylmethyltaurine, oleylsarcosine, oleic acid esters of oxyethanesulfonic acid, Methyl taurine of triisobutylphenylacetic acid and sulfuric acid esters of higher fatty alcohols. The above-mentioned acids with affinity for fibers are expediently added directly to the dyebath. But you can also pretreat the fiber mixtures with the acids before dyeing. Examples i .. A mixture of 50 parts wool and 50 parts synthetic threads high molecular weight polyamide compounds, which are formed by polymerizing the lactam of aminocaproic acid are produced by the process of German patent specification 748 253, i Colored at low boiling point for an hour with the addition of 2% of the azo dye from diazotized i-Amino-4-acetylaminobenzene-2-sulfonic acid acid-coupled with 7, -amino-8-oxynaphthalene-6-sulfonic acid ,, 10% anhydrous sodium sulphate, 4% sulfuric acid (66 ° B6) and 3 ° / o oleyl - N - methyl - arninoethanesulfonic acid sodium; Liquor ratio z: 50. This gives a fiber-like, red color.

A similar effect is achieved by adding the oleic acid ester of oxyethanesulfonic acid achieved in place of the oleyl - N - methyl - aminoethanesulfonic acid sodium.

2. A mixed fabric of equal parts of wool and polyamide artificial silk is dyed at a low boiling point for one hour with the addition of 2% of the dye and 10% anhydrous sodium sulphate, 4% sulfuric acid (66 ° B6). and 10% sodium salicylic acid; Liquor ratio =: 50: A fiber-like, blue dyeing is obtained.

A similar result is obtained by adding the condensation product from naphthalene-2-sulfonic acid and formaldehyde or from i-benzylaminobenzene-4-sulfonic acid Sodium or of triisobutylphenylacetyl-N-methyl-aminoethanesulphonic acid sodium instead of sodium salicylic acid.

3. A mixed yarn made of equal parts of wool and polyamide artificial silk is dyed at the boil for one hour with the addition of 2% of dye no. 974 (Schultz, Dye Tables, 7th edition), 10% anhydrous sodium sulfate, 5% acetic acid (3o ° / oig) and 10% sodium benzylnaphthalenesulfonate with addition of 2% sulfuric acid (66 ° B6); Liquor ratio =: 5o. A dark blue dyeing identical to the fibers is obtained.

A similar effect is achieved by replacing the benzylnaphthalenesulfonic acid Sodium by sodium dibutylnaphthalenesulphonic acid or i-benzylaminobenzene-4-sulphonic acid Sodium or the condensation product of phenol, sulfuric acid and chlorobenzyl chloride.

4. Mixed fibers are made from equal parts wool and polyamide artificial silk Colored at a low boiling point for i 1/2 hours with the addition of 2% of the azo dye diazotized i-N-ethyl-N-4'-aminobenzoylaminonaphthalene and i-benzoylamino-8-oxynaphthalene-4-6-disulfonic acid, 10% of anhydrous sodium sulphate, 6% of ammonium acetate and 5% of the oleic ester of oxyethanesulphonic acid with addition of 2% acetic acid; Liquor ratio i : 5o. A fiber-like, red dyeing is obtained.

5. A mixture of 50 parts of wool and 50 parts of threads made of synthetic high molecular weight polyamide compounds is added for 1 1/2 hours. colored by 3% of the complex chromium compound of the azo dye from diazotized i-amino-2-oxynaphthalenesulfonic acid and i-oxyna.phthalin-8-sulfonic acid, 10% sulfuric acid (66'B6) and 10% dodecyl alcohol sulfonate; Liquor ratio x: 5o. A fiber-like, greenish blue dyeing is obtained.

6. A mixture of equal parts of light-weight silk yarn and threads made of synthetic high molecular weight polyamide compounds is dyed for one hour at 0 ° in a bast soap bath broken with 10% acetic acid with the addition of 3 l) / of the dye No. iigg (Schultz, Dyestuff Tables, 7 . Edition) and 10 % of the condensation product of phenol-sulfuric acid with chlorobenzyl chloride; Liquor ratio i: 5o. A fiber-like, blue coloration is obtained.

Instead of the condensation product mentioned, the same can be used Success also uses sodium benzylnaphthalenesulfonate.

7. A mixture of 50 parts of casein fiber and 50 parts of fibers made from synthetic high molecular weight polyamide compounds is mixed with 2% of the dye for 1 hour at 80 ° colored with the addition of 5% acetic acid (30%) and 10% of the condensation product obtained by sulfonating phenol and condensation with chlorobenzyl chloride; Liquor ratio 1:50. A fiber-like, blue dyeing is obtained.

B. A mixed yarn of equal parts of casein fiber and polyamide rayon is dyed for 1 hour at 80 ° with the addition of 2% of the azo dye and also 5% acetic acid (30%) and 10% sodium benzylnaphthalenesulfonic acid; liquor ratio 1: 50. A corduroy-red dyeing identical to the fibers is obtained.

To protect the casein fiber, some formaldehyde can also be added to the dye bath are added, which at the same time also increases the temperature of the dyebath can be connected.

Claims (1)

PATENT CLAIM: A process for dyeing mixtures of structures made of synthetic, higher molecular weight polyamide compounds and fibers of animal origin or animalized fibers with acidic wool dyes, characterized in that dye baths are used which contain water-soluble organic acids with an affinity for the fibers, or the fiber mixtures are treated with these acids before the usual dyeing . Attracted publications E. Valko, Österreichische Chemikerzeitung, 40th year, 1937, p. 465 to q.72; Chevala, "Textilhilfsmittel", Vienna 1939, Verlag-Springer, pp. 344 to 353; Ender and Müller, "Melliand Textile Reports" 1937, p. 992, left column, paragraphs 4 and 5.