SU1240810A1 - Method of testing fur pelts prior to dyeing with oxidative dyes - Google Patents

Description

The invention relates to the dyeing and finishing industry, in particular, to a method for treating fur skins before dyeing with oxidative dyes. The aim of the invention is to increase the mechanical strength of a hair of fur skins dyed with oxidative dyes.

Example 1. AliexoByio sheepskin after hair trimming is weighed and treated with a dressing agent at J.K. 13, temperature 30 ° C, pH 7.5 for 2.5 hours in the following ratio of bath components, g / l:

Tetraammonium-m-ethylenediaminetetraacetate and s and to and in and m and N about with and l ff and then to that at y-11 r and t (I) 1,5

.Lmmiak (recalculated

iia 100%) 0.75

Ammonium Chloride2.5

Sodium Chloride10.0

Pre Votsel V-OF-1000,5

WaterEverything

up to 1 l

Next, the 1 t drain for I h and the treatment with an oxidizing solution at J.K. 13, temperature 24 ° С for 3.5 h with the following ratio of bath components

 I l.

Chromepik2,5

(true lover 0.5)

Prevocell W-OF-1000,1

WaterEverything

up to 1 l

After treatment with an oxidizing solution, the black is dabbed and spotted with oxidative dyes without the use of pyrocatechol.

Example 2. Fur sheepskin after carrying out the process of tanning, are woven and treated with a mordant, 1 of the composition at / K.K. - 8, temperature, RP; -: 7.7 for 2.0 hours with the following codTHOiiieHHH components: wa, r /; i: Tstraammonin-1-E1 and ilep; uia mI1gget) r1 but not that bis- aquaaminosulfate-cobalt (I) 2.0

.D V. and ak (at 11.;) From the Account | u 100%) 1.0

Chloate ammonium3,5

Chlorine 11at) iy15,0

In. but other

to 1; i

 the drain is carried out in tschen11e I h and the treatment with an oxidizing solution at Zh.K. - B, tempur ature 26 ° C for 3.0 hours at.; Ice 1dem ratio of components, r /; i:

Chrompik Sulfuric acid OP-10 Water

five

five

3.0

1.0 0.2

The rest is 5 to 1 l

After treatment with oxidizing solutions, black is pressed and reduced by oxidizing dyes without the use of pyrocatechin.

Example 3. Fur sheepskin after treatment of hair covering is treated with a dressing solution with a liquid solution at J.K. 13, temperature 35 С, pH 8.0 for 1.5 h with the following ratio of bath components, g / l:

Tetra ammonium-m-ethylenediaminetetraacetate bis-aquaaminosulfate-cuprate (L) 2.5

Ammonia (in terms of

at 100%) 1.0

0 ammonium chloride4,5

Sodium chloride 20.0

Siitanol DS-101,5

WaterEverything

up to 1 l

(1) a drain is carried out for 1 h and the treatment with an oxidative solution in the case of J.K. 13, at a temperature of 28 ° C for 2.5 hours with, eating a ratio of) components, g / l:

Chrome 1ik3,5

Orna acid1,5

 Si gtanol DS-100.3

3 Others

up to 1 l

noc. Ie, treatment with an oxidizing solution | is carried out by pressing and oxidizing dyes to black nvet without using pyrocatechin.

The table shows the comparative data on the application in the treatment of fur sheepskin known and proposed ways.

0 The treatment efficiency is estimated by the load indices when a single hair is torn and the reflectance of the fringing of the hair, characteristic of the strength of the hair, the color of the hair, and also shown (o. In.x; chemical composition and physical and mechanical properties). properties of leather and hair - mgi with. cover.

() | 1rede.1enie the magnitude of the load with a single hair, is carried out on the dynometer. F0-1c type with a preliminary ρ () m hair of the same thickness with help- ;; dynamometer. Determination of the reflection coefficient of an optically warmed HOKpC Bii is carried out using an SF-14 spectro () oh} meter.

Load at break single hair, SN

Reflection coefficient,%

Mass fraction of fatty substances,%

WITH

Not less than 3 3

Leather fabric Not less

As can be seen from the table, the use of the proposed method of treatment in comparison with the known method allows to increase the hair strength by 30-35%. Color intensity.

Compiled by T. Sergeeva

Editor A. GulkoTehred I. VeresKorrektor V. But ha

Order 3458/22 Circulation 455 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Filia.lp PPP "Patent, Uzhgorod, st. Project, 4

cover

7.1 11.2

0.6

9.2 9.4 9.6 11.1 11.3 11.5

0.7 0.5 0.3

as well as standardized indicators of the chemical composition and physicomechanical properties of leather and hair cover do not undergo any practical changes.

Claims (1)

METHOD FOR PROCESSING FUR SKINS BEFORE DYING WITH OXIDATIVE DYES with an etching composition comprising copper salt, ammonia, a nonionic surfactant and water, and then an oxidizing solution of chrompeak, sulfuric acid and a nonionic surfactant, characterized in that it increases the mechanical strength with of the hair, tetraammonium-m-ethylenediaminetetraacetobisacqua aminosulfate cuprate (II) and additional sodium chloride and ammonium chloride are introduced into the etching composition as a copper salt and the following ratio of components, g / l: Tetraammonium-m-ethylenediaminetetraacetobisacaminosulfonate rat (II) 1.5-2.5 Ammonia (in terms of 100%) 0.75-1.25 Nonionic surfactant substance 0.5-1.5 Sodium chloride 10.0-20.0 Ammonium chloride 2.5-4.5 Water Rest up to 1 l they are treated at a pH of 7.5-8.0, and treatment with an oxidizing composition at 24–28 ° C SU, „, 1240810 ί