SU962319A1 - Composition for fat-liquoring skins - Google Patents

Description

(84) COMPOSITION FOR LIVING SKIN

one

The invention relates to light rinse, namely leather, and can be used for fattening leather.

A composition for skin fattening is known, containing synthetic fatty acids, unwashed substances, ammonium soap, mineral oil and water 1.

However, the use of this composition does not provide leather with a sufficiently high resistance, which necessitates additional processing of the semi-finished product with aluminum alum.

Closest to the fattening of the skins 2) proposed by the technical essence and the achieved effect, including synthetic fat and sulphurized blubber, as well as mineral oil in the following ratio of components, wt.%: Synthetic fat 50-70

. Sulfonated blubber 20-30 Mineral oil 10-20

. The disadvantages of the known composition are low penetrating power and uneven distribution in the thickness of the mold. Besides.

the finished skin does not have high water resistance and fatty substances are easily washed out of the dermis structure with dust and water.

The purpose of the invention is to increase the water resistance of the finished leather. This goal is achieved by the fact that the composition for fattening of the skin, including synthetic fat and sulphurized blubber, additionally contains shhary fat obtained

10 extraction in the processing of cattle wool, in the following ratio, wt.%:

Synthetic fat5-15

Sulfonated blasts15-25

ts

Wool fat 60-80

The introduction of wool fat into the fat composition makes it possible to obtain a mixture whose aqueous emulsion has a high dispersion, which contributes to penetrating ability and firm bonding of fatty substances in the dermis structure, which increases the water resistance of the skin. This skin retains air and vapor permeability. Bold fat is obtained by extracting the cattle’s horn from the processing of wool. The composition of wool fat is: D (4 -K | - C where RI is a long chain fatty acid radical, P-2 is cholesterol, linosterol, or aliphatic mono- and dispersed Cig-SzoT-series. The technology for using the composition is as follows. chrome tanning method, obtained by the standard procedure, is greased with the proposed composition on a used dyeing bath for black leather and pure water for uncolored leather. The fat emulsion is prepared using conventional methods with an emulsion pH of 7.5-8.0 and poured into the drum in g one intake. coefficient 1.0-1.2, bath temperature 60-65 ° C, processing time 40-60 minutes. Consumption of 4.5-5.0% by weight of planed leather (calculated as 100% fat). Further processing is carried out according to the standard method. The skin of the bottom of the shoe obtained according to the standard method and the yuftie leather are loaded into a preheated drum and rotated dry, without fat, with air for 15-20 minutes, then the prepared fat mixture is poured through the hollow axis of the drum heated to 65-

0,213

34,1250,146

120

min

20.3

0.0978.6

180

240

10-70 ° C, in two steps at intervals of 15-20 minutes for yuft leathers and in one procedure for leathers for bottom shoes. The temperature of the blown air is 90 ± 5 ° С, outgoing 3545 ° С. The duration of treatment is 1.5-1.3 h for yuft leather and 30-45 min for leather of bottom shoes. Consumption of 20-33% for yuft leathers and 2-3% for bottom leathers of the weight of pressed leathers. Further processing according to standard procedures. I Example 1. Leather for the upper of the chrome tanning shoe, made from bull hides using a standard procedure, is treated with the following composition, May. %: Synthetic Fat15 Sillinated Wool25 Wool Grease60 The resulting leather is then processed according to a standard method for the production of leather for the upper of a chrome tanned shoe. Example 2. Bottom leathers made from heavy skins by a typical method are treated with the following composition, wt.% :: Synthetic fat 10 Sulfonated wool 20 Wool fat 70 Further processing is carried out according to a known technology. Example 3. Yuft leathers, developed from the skins of dexterity by the standard method, are treated with the following composition, mass. %: Synthetic fat5 Sulfonated wax15 Wool fat80 Further processing is carried out according to known technology. Received ready skin, water resistance of which is shown in the table.

In example I, the skin is treated with a known composition, wt.%:

Synthetic fat50

Sulfonated

bristle.3Q

Mineral oil 20

In example 2 using the known composition, wt.%:

Sintett-eki70

Sulfonated

blubber20

Spun butter10

In example 3, the treatment is carried out with a known composition, wt.%:

Synthetic fat60

Sulfonated bore30

Spun butter10

The implementation of the proposed composition allows obtaining skin with enhanced water resistance and improving the operational properties of the products made from them.

The economic effect is 327 rubles. per 1 million dm of leather, which, with the finished production of leather (5 billion yes (), allows you to save on the industry in the amount of 1,635 thousand rubles.

Claims (2)

1. USSR author's certificate number 720019, cl. C 14 C 9/04, 1979. 2.Methodika production of chrome leather of different thickness for the top of the footwear from the hides of large cattle. M., 1975 (prototype).