RU1776711C - Leather dyeing compound - Google Patents

Abstract

SUMMARY OF THE INVENTION: composition for dyeing leather and velor products, split or locks. Contains, wt.%: Dye, acidic metal-containing 0.4-0.9, ethyl cellosolve 6.0-15.0, isopropyl alcohol 7.4-18.6, dibutyl phthalate 0.4-0.9, oleic acid 0, 4-0.93, oxidized methyl esters of synthetic fatty acids Cr1-C25 1.12-2.8 hyperchlorethylene-up to 100. Color fastness to dry and wet friction 3.5-4 points, the degree of skin tissue dyeing 90-100%. 2 tab.

Description

The invention relates to the field of dyeing and decorating, in particular to a composition for dyeing leather and products made of velor, split leather or suede.

A composition for processing articles from velor, split or suede is known, comprising, in wt.%: An acetone-insoluble metal-containing azo dye 0.2-0.5; organic compound 2.0-2.8; benzine or mineral spirits 15-25.8; dioctylphthalate-lat 0.4-0.6; tetrabutoxy titanium 0.2-0.5; ethyl cellosolve 16-20; perfume 0.4-0.6; the rest is a mixture of organic solvents (10-15 wt.% methyl ethyl ketone 5-10 wt.% isopropyl alcohol and 55-60 wt.% sweep freons 11 and 12).

The disadvantage of this composition is the relatively low color intensity, silkiness and water resistance of products, high rates of their soiling and soiling.

A known composition for processing products from velor, split and suede, containing an acetone-soluble metal-containing azo dye, ethyl cellosolve, tetrabutoxy titanium, an organosilicon compound polyethylsiloxane, as a mixture of solvents is a mixture of acetone and perchlorethylene with a weight ratio of 1: 1, respectively, including oil of the following castors the ratio of components, wt.%:

Acetone-soluble metal-containing azo dye 3-5 Ethyl cellosolve 5-10 Tetrabutoxy titanium 1-6 Polyethyl hydrosiloxane 10-15 Castor oil 1-4 Mixture of organic solvents Else The known composition has low light resistance, dry cleaning, which limits its use.

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The closest in technical essence to the claimed invention is a composition for dyeing of genuine leather products.

The composition contains an acidic metal complex azo dye. the aliphatic amide solvent is dimethylformamide. hydroxyl-containing aliphatic solvent - ethyl cellosolve and fatliquoring substance - a mixture of polyterpenes with industrial oil and an alamine C preparation based on melamine modified with fatty acids, and additionally - perchlorethylene and butyl acetate in the following ratio, wt.%: Acid metal complex azo dye 1.0-2 0

Dimethylformamide 10.0-13.0

Ethyl cellosolve 10.0-15.0

Polyterpenes 3.5-4.0

Industrial oil3.5-4.0

The drug alamine C0.7-1.0

Perchlorethylene 10.0-13.0

Butyl acetate

The disadvantages of the known composition are insufficiently high indicators of resistance to dry friction, the complexity of the composition, the uneconomical composition due to the high consumption of dyes. In addition, the composition can only be used with the spread or spray paint method, since when the composition is used in dry cleaning machines, perchlorethylene and dimethylformamide form an azeotropic mixture (a large amount of toxic waste is generated).

The aim of the invention is to expand the technological capabilities of the composition, increase labor productivity by providing dye with the aforementioned composition in dry cleaning machines, improve the quality of the colors, namely, increase the resistance to dry friction, the intensity and uniformity of color, ensuring a waste-free process for processing products.

This goal is achieved in that the composition including the acid-base metal complex azo dye, ethyl cellosolve, fatliquoring substances and perchlorethylene as fatliquoring intensifying substances contains oleic acid, oxidized methyl esters of synthetic fatty acids C21-C25 and dibutyl phthalate and, in addition, the isobropyl isopropyl alcohol isopropylate components, wt.%:

Metal-containing acid dye 0.4-0.9

Ethyl cellosolve 6.0-15.0

Isopropyl alcohol 7.4-18.6 Dibutyl phthalate 0.4-0.93

Oleic acid 0.4-0.93

Oxidized methyl esters of synthetic fatty acids C21-C251.12-2.8 Perchlorethylene Rest to 100

Example. A weighted amount of the dye is dissolved in ethyl cellosolve, then isopropyl alcohol is added, dibutyl phthalate is poured in a fine stream with thorough stirring, then oleic acid and C21-C25 synthetic fatty acid methyl esters. The mixture is stirred. During the dyeing by spreading and aerosol methods, the solvent is poured into the mixture, and during dyeing in a dry cleaning machine, the mixture is poured directly into the machine. The dye solution in the machine can be used repeatedly, only additives of the composition are needed. The ratio of components (in wt.%) Are given in table. 1.

As acidic metal-containing dyes of complex 1, 2, dye Vofalan black B (GDR) was used. Comparative data on the quality of the color are given in table. 2.

The composition is easy to manufacture. The components included in the composition and their ratio allow its use for dyeing products in automated equipment. Due to this, repainting is reduced several times during the production cycle, there are no harmful emissions into the atmosphere. Significant dye savings are achieved by reusing the formulation in the machine.

Claims (1)

SUMMARY OF THE INVENTION A composition for dyeing a skin containing an acidic metal complex dye, ethyl cellosolve, fatliquoring agents and perchlorethylene, characterized in that, in order to increase the intensity and uniformity of color and resistance to dry friction, the fatty acids contain oleic acid, oxidized methyl esters of synthetic fatty acids C21-C25 and dibutyl phthalate and, in addition, a solubilizer-stabilizer isopropyl alcohol in the following ratio of components, wt.% Acid metal integrated polices krasitel0,4-0,9 Ethylcellosolve 6,0-15,0 7,4-18,6 Isopropanol Dibutyl Phthalate Oleic Acid 0.4-0.93 0.4-0.93 Oxidized methyl esters of synthetic fatty acids C21-C251.12-2.8 Perchlorethylene Rest to 100 The results of comparative tests of compositions 1-1 and Table 1 Table 2 of the composition of the prototype