SU1567635A1 - Composition for tanning skins for footwear bottom - Google Patents

Abstract

The invention relates to the leather industry and allows reducing foaming and increasing the content of soluble tanning in tanning solution. The composition for tanning leather for the bottom of the shoe contains the following components, wt.%: Synthetic tanning agents 8-20, plant extracts 20-32

emulsifier 0.06 - 0.2 and water the rest. The composition as an emulsifier contains the product of sulfonation of a mixture of oxidized methyl esters of fatty acids of the C ₁₈ - C ₂₅ fraction and technical natural fat, taken in a ratio of 1: 0.6 to 0.9, pretreated with higher fatty alcohols of the C ₁₀ - C ₁₈ fraction. 2 tab.

Description

(21) 4486775 / 30-12

(22) 06/17/88

(46) 05.30.90. Bul 20

(71) Central Research Institute of Leather and Footwear Industry

(72) N.I. Polinova, A.S.V lkina and E.E.Maykova

(53) 675.024 (088.8)

(56) Leatherworking Handbook. / Ed. N.A.Balberova. M,: Legprombytizdat, 1986, p.272.

Method for the production of leather for the bottom of shoes, saddlery products and welts. M., 1982.

(54) COMPOSITION FOR LEATHER SKINING FOR LOWER SHOES

2

(57) The invention relates to the leather industry and allows reducing foaming and increasing the content of soluble tanning in tanning solution. The composition for tanning leather for bottom shoes contains the following components, wt%: synthetic tanning agents 8–20; plant extracts 20-32; emulsifier 0,06-0,2 and water the rest. The composition as an emulsifier contains the product of sulfonation of a mixture of oxidized methyl esters of fatty acids of fraction C, g - and technical natural fat, taken in a ratio of 1: 0.6-0.9, previously treated with higher fatty alcohols of the fraction Cfft. 2 tab.

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The invention relates to the leather industry and can be used in the manufacture of leather for bottom shoes.

The purpose of the invention is to reduce foaming and increase the content of soluble tanning in tanning solution.

The essence of the invention is that the composition for tanning leather, including synthetic tanning agents, plant extracts, emulsifier and water, as an emulsifier contains the product of sulfonation of a mixture of oxidized methyl esters of fatty acids of the Cj fraction. Cj. and technical natural fat, taken in a ratio of 1: 0.6-0.9, pretreated with higher fatty alcohols

C10 C fractions and emulsifier of the SMENS and SINARS type (TU 380-7329-86).

The composition contains these components in the following ratio, wt.%: Synthetic tanning agents 8-20 Herbal extracts 20-32 Emulsifier type CMENS or SINLRS0.06-0.2

WaterEverything

The preparation technology of the formulation is as follows.

Dried plant extracts in an amount of 20-J2 wt.% Are filled with water in an amount of 35-40 wt.% At 70-80 ° C and incubated for 2-3 hours, then emulators are added.) Ghr and 0, 2 wt.% with continuous stirring until MUIHOI dissolves the components. D.SHF and mixture added

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synthetic tannins in the amount of 8-20 wt.%, dissolved in the remaining amount of water. The mixture is stirred for 0.5-1.5 hours,

Techniques for applying the proposed formulation are as follows.

In the first phase, the chrome-plated semi-finished product obtained by the standard procedure is loaded into the spent tanning solution after the second tanning phase of the previous batch, LC 1.2-1.6, solution temperature, pH 5.5-6.0.

The duration of the rotation of the drum 15 on to achieve prokrasa 12-24 hours. The waste liquid is drained.

In the second veil, the treatment is carried out with the tanning composition shown in Table 1, at a flow rate of 26% 20 by weight of the chrome-plated semi-finished product with an LCD of 1.2-1.6 and a temperature of 42-45 ° C. Processing time 60-72 hours. Waste liquid is directed to the first phase. Processing.

Table 2 shows the indicators of tanned leather.

The proposed tanning composition for lower skins allows an increase in the content of soluble tannins in a tanning solution, reduces foaming and obtains high-quality leather.

Claims (1)

Invention Formula The composition for tanning leather for bottom shoes, including synthetic tanning agents, plant extracts, emulsifier and water, characterized in that, in order to reduce foaming and increase the content of soluble tanning in tanning solution, it contains an oxidized mixture as an emulsifier fatty acid methyl esters fractions Cf " J1S taken technical officer native fat, taken in a ratio of 1: 0.6-0.9, pre-treated with a fraction of higher fatty alcohols (ABOUT in the following ratio Opponents, wt.%: Synthetic tanning agents Plant extracts The product of sulfonation of a mixture of oxidized methyl esters of fatty acids of C fraction and technical natural fat, taken in a ratio of 1: 0.6-0.9, pretreated with higher fatty alcohols 8-20 20-32 From 1B  It 0.06-0.20 More details in emulymtsr when wearing chafir and natural scar 1: 0.6 1: 0.75 1: 0.9 1: 0.5 1: 1 Water The content of tanning substances in the composition for tanning, g / l Content of highly insoluble substances,% Foaming,% Number of product, leather,% Moisture capacity,% f and b c a Oh, 13 0, 2 59.94 59.87 59, i 0.03 0, 3 63.95 51.7 table 2 156.1 158.6 161.0 154.2 160.4