SU1675450A1 - Method of treating musquash pelts - Google Patents

Abstract

The invention relates to the field of fur processing, in particular, to a method of dyeing natural fur, namely, muskrat skins. The invention allows to increase the yield of skin area from 4.2 to 5.2-5.3 dm, as well as to improve the quality of the finish of the hair coat from 13 to 15-16 points, knife fabric from 11 to 13-14 points due to the fact that that the composition is used for neutralization, g / l: ammonia (25%) 2.5-3.0; salt 9.0-10.0; OP-10 (Prevocell) 0.9-1.0: water up to 1 l. Dyeing is carried out (before etching) with the composition, g / l: black D for fur 0.12-0.13; brown A for fur 0.02-0.04; yellow H for fur or pyrocatechin 0.01-0.015; ammonia (25%) 0.25-0.30; perhydrol (37% - ny) 0,24-0,26; water up to 1 l, and for pickling use the composition, g / l: chrompeak 0.25-0.30; water up to 1 l. 2 tab.

Description

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The invention relates to dyeing and finishing work, in particular, to a method for processing muskrat skins.

The purpose of the invention is to increase the yield of skin area, as well as the quality of finishing hair and leather, while reducing the consumption of chemical materials. Muskrat skins after disintegration are treated at 25 ° C for 30 minutes at J.K. equal to 12 in the neutralization bath in the following ratio of components in solution, g / l:

Ammonia (25%) 2.5-3.0

Cooking salt 9.0-10.0

OP-100.9-1.0

Water up to 1 l

Then a drain and rinsing with water at 25 ° C with the liquid fuel is carried out. 12 for 1-1.5 hours to neutral wash water (eg phenolphthalein). Following this operation, spinning is performed for 0.5 hours. Then dyeing is carried out at 32 ° C at LC. 12 for three hours and the following ratio of components in the dye bath, g / l:

Black D for fur 0.12-0.13

Brown A for fur 0.02-0.04 Yellow N for fur or catechol 0.01-0.015

Ammonia (25%) 0.25-0.30

Perhydrol (30%) 0,24-0,26 Then they are etched at 30 ° С for 1 h at Ж.К. 12 in the working solution containing chrompeak in the amount of 0.25-0.30 g / l, followed by washing in water with the addition of 0.4-0.5 g / l OP-10 for 0.5 h at 0 ° С ° Ж.К. . 12.

Further operations (spinning, greasing, drying) are performed in accordance with

About 4 SL N SL

about

common processing technology skins of muskrats.

In tab. 1 shows the characteristics of the stages of the dyeing process and examples of compositions. In tab. 2 given the comparative characteristics of the proposed and known methods.

Claims (1)

Claims method of treating muskrat skins by neutralization with an aqueous composition containing ammonia, salt and a non-ionic surfactant, followed by washing, pressing, etching with an aqueous solution of bromine and dyeing with an aqueous composition containing black D for fur, brown And for fur, yellow H for fur or pyrocatechin, ammonia and perhydrol, characterized in that, in order to increase the area of the skin, as well as the quality of the finish of the hairline and leather while reducing the consumption of chemical materials, neutralization is carried out in the following ratio of components, g / l: Ammonia (25%) 2.5-3.0 Cook Salt9.0-10.0 Non-ionic surfactant, 0.9-1.0 Water-to-1 dyeing is carried out after pressing in the following ratio of composition components, g / l: Black for fur 0.12-0.13 Brown A for fur 0.02-0.04 Yellow N for fur or pyrocatechin 0,01-0,015 Ammonia (25%) 0.25-0.3 Perhydrol (30%) 0,24-0,26 Water. Up to 1 l with subsequent treatment with a content of chromic in a solution of 0.25-0.30 g / l and washing. Table 1 Continued table. one table 2