SU80462A1 - A method for improving the properties of leather tanned with substances of organic origin - Google Patents

Description

It is known to introduce into the skin various supplementary substances, with the aim of reducing water-breathing capacity in some cases, in order to obtain hard-finished leather, exposed to organic tanning agents.

Iredlagomoma snosob reduces is significantly stenn water-water; aemostg to / kn and its tonicity of PM) is able. which causes ns1T () to use low-grade cojiTa on ostkugo koil.

The best way to do this is from the known methods; lc) is given in tolg, that the skin tanned with vegetable plants or plant thaiids 1};

1. Prnmer Koichi Goslit nrokrasa vysokodpspersippg tannidam1g treated rastvo1) th, 10 soderzhapipg-fii) g / l potassium chromate KYU- 200 g / l ammonium sulfate, irompiyutt thoroughly in water to nrotochggoi lscheznovenn beacause) nrisutstviem chromate elto11 OKpaci r, whereupon retanning with a strong solution of extract. Naimim) oak, luchtie jesul (|) ptnropa1: iogogo, and noperga from .alineminim known ln.

And p and m e) 2.); Ky with a solution containing 10–50 g / l x |) omate 1; al11, 20-100 g / l amylgodish sulfate and 200-300 g / l sodium chloride and then come Taix / ke. l: as indicated in example 1.

Example 3. The skin is completely blown with a mixture of oak tapes with purified sulfate cellulose, taken, in a cooTiroHieiuib40: 60 and treated with chromatog. After that, the skin is greased with a set of various fats, into which fish are introduced, with an amount of 40-50% JTX in total weight.

Subject invention

1. A method for improving the properties of leather. Dubeno substances. Orgtygcheskogo origin. o t l ich u hI; n ii with that. what ko

Ill. 4.62 2-plant tannidamps with vegetable tannides in combination with sulphite-cellulose tanning agents, in order to reduce its water permeability and new resistance in wet conditions, are treated with soluble chromates.

2. Acceptance of the method according to n. 1, characterized in that the skin is treated with soluble chromates in various stages of yublenp.

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