SU50156A1 - Method of dyeing animal fibers - Google Patents

Description

NH-CO-

) -S-SI, -COONa

NH,

is dissolved in water, wool is added to the solution and water is wetted with water, and 2 hours of ammonium acetate VI are heated to 85-90 for 1-IVa hour; wash and immerse the material to be painted in a weak solution (3: 2000) of sulfuric acid, heated to 80 °, after which it is washed and dried. It is very durable and the pka is yellow in color.

Note 2. Instead of ammonium acetic acid, you can use anthranilic acid, neutralized with ammonia.

Example 3 (modification of example 1).

next composition

NH2-

-s HOaCH.CS

HsCHN

The dye bath is made up of 2 parts of the product indicated in Example 1, 2000 parts of water and 2 parts of ammonium acetate dissolved in water, and 50 parts of wool previously soaked in water are introduced into it. The bath is heated at 85-90 ° for 1 - I / a hours. Then the wool is washed and immersed in a solution of 3 parts of sulfuric acid, 2 parts of cetyl pyridine bromide and 2000 parts of water; I heat it up at 80 ° for V hours, it is washed and dried. It also has a bright yellow color.

Example 4. Apply Sodium Salt

NHCHj

S. SNOSOON

and mixing it with the sodium salt of the condensation product of formaldehyde-naphthalene-sulfonic acid and the dyeing process in the same way as above, a greenish-blue color is obtained.

By varying in this way the composition of the basic dye and applying lactolization, a whole range of different colors can be obtained: yellow, green, blue, scarlet, purple and red in different shades that differ in their strength.

For examples, you can have a bright blue durable color;

Example 5. Apply salt composition

NH. CH,

NH-

-Nh

S. CH, COO Na

The subject matter of the invention.

1. A method of dyeing animal fibers, characterized in that these fibers are processed by heating in the presence of ammonium salts or amino acids with solutions of salts of O-amino-phenyl-thioglycolic acid derivatives having an unsubstituted or substituted anthraquinone residue adhered to the benzene via the groups NH, S NHCO, CONH, or NHSO., Then, after washing, is treated by heating with diluted mineral acid to close the lactam ring, washed, and dried.

2. Modification of the method mentioned in claim 1, characterized in that similar compounds are used for dyeing, in which the anthraquinone residue is bound to the two residues of O-aminophenyl-thioglycolic acids mentioned in paragraph 1 (priority dated July 17, 1934 .).