SU1178769A1 - Composition for leather fattening - Google Patents

Abstract

COMPOSITION FOR LEATHERING OF SKIN, containing synthetic fat, sulphurized fish oil, spun oil and fish oil, characterized in that, in order to improve skin quality, it additionally contains propylene glycol ether mixture of naphthenic and fatty acids of St-Se fraction with the following ratio of ingredients, May .%: S-DO Synthetic fat Sulfur fish 20-30 fat 10-15 Spun oil 10-15 Fish oil Propylene glycol with 5 ether of a mixture of naphthenic and fatty acid fractions (L 10-40 St-Cd.

Description

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Od

about 1 The invention relates to the leather industry and can be used for fattening natural leather for shoes. The purpose of the invention is to improve the quality of the skin by increasing its fat content, softness, elasticity, and also frost resistance. A distinctive feature of the invention is that pripilenglycolic eLir of a mixture of naphthenic and fatty acids of the Cg – Cd fraction due to the content of additional polar groups and due to its high dispersion is firmly bound to the fibers of the dermis, which ensures the preservation of fat in the skin and the absence of its migration to the surface at low temperatures. Propylene glycol ether is obtained on the basis of a mixture of naphthenic and fatty acids fraction St-Cd and waste production of propylene oxide or epichlorohydrin. The composition of the waste mainly contains propylene glycol, as well as dimethylethylene glycol chlorine-containing products: dichlorophenol, trichloropropane, diisopropylchloroex. The method of preparation consists in saponification of a mixture of naphthenic and fatty acids with caustic soda and replacement of the sodium salts with waste at 150-220 ° C, followed by esterification of the unreacted in the reaction process, replacement of hydroxyl-containing waste products with a mixture of fatty and naphthenic acids at 120 ° C. In tab. 1 shows the known and proposed (1-3) formulations for liquids.

Propylene glycol ether naphthenic n fatty acid mixture fraction

Synthetic fat Sulfonated fish oil Spun box Fish oil

Table I

The content of kontonentov, wt.X in the compositions

Control

(prototype) 11 (

50 30

to

10,692 trenches, which were used to fatten a semi-finished chrome tanning product obtained from raw material and light goatskin, processed according to the method of production of chrome leather for the upper of the shoe. In order to stabilize the fat emulsions, non-ionic surfactants were used in an amount of 5% by weight of fats. Fatting was carried out according to the standard procedure on a used dyeing bath for black leather and for pure water for uncolored leather for 60 minutes. The pH of the fat emulsion is 7.8, the fat consumption is 5.5% by weight of the sliced leather. The skin was dried in vacuum dryers. The results of chemical analysis and physico-mechanical properties of finished, leather, treated with fat compositions 1-3, are given in Table 24, respectively. As can be seen from the above data, the use of propylene glycol ether of a mixture of naphthenic and fatty acids significantly improves such a basic indicator that characterizes the fat process, as the fat content in the skin. For the rest of the indicators of the skin meet the requirements of GOST. In addition, since the production of ether can be used as an alcohol component, a waste from the production of propylene oxide or epichlorohydrin, the cost of the fat composition is halved.

Tablmc 2

Requirement GOST 939-75 Goby (koigroliL / Draw (experienced). Goby (picker) Goby (experienced) Trevting GOST 17-258-8 Bychina is easy (counter flax) Bychina is easy (experienced)

Table 3

10-164.33, 8-8.8

t "5.6

3.8

155.6

4.8

145.8

5.4

,one

5.8 0

12-164.3

3.7-10

g) 15 5.7

.z 16 5.3

6.1

Spreadsheets

18-30

200

1.5

2601800 1.5

25

1.6

2401780 23 1.6

2351820

.27 1.5

240 (765 20-35

i.i

goo

thirty

1.4

2501680

Z9

1.4

2201600

Claims (1)

COMPOSITION FOR LIQUID SKIN containing synthetic fat, sulfonated fish oil, spindle oil and fish oil, which requires that, in order to improve the quality of the skin, it additionally contains propylene glycol ether of a mixture of naphthenic and fatty acids of fraction St -Se in the following ratio of components, May.%:. '' Synthetic fat 10-40 Sulfonated fish fat 20-30 Spindle oil 10-15 Fish fat 10-15 Propylene glycol ether naphthenic mixtures from and fatty acid fractions 10-40 (/) S? - Sd a 1 1178769