The composition for the fatliquoring of leather

 

The composition is intended for the fatliquoring of leather and can be used in making leather for various purposes, such as skins for clothing. The composition contains chlorinated paraffins with chlorine 24-32%, synthetic esters of fatty acids range From10-C25chlorinated lipid extract containing phosphatides not less than 60% and sulphonated fish oil. The proposed structure allows to obtain a soft supple leather with high performance properties. table 2.

The invention relates to the leather industry and can be used in the formulation of natural leather for various purposes, including skins for clothing.

Known composition for the fatliquoring of leather, including, wt.%: synthetic fat 4,55-47,62, spun butter 4,55-9,52, nonionic surfactants 4,76-of 9.09, sulfated synthetic fat 27,27-47,62 and chlorinated paraffins with chlorine 13-47% (SU, 1000464, CL 14 With 9/02, 28.02.83).

The closest analogue of the proposed technical solution is a composition for the fatliquoring of leather, containing, wt.%: lipidnyi extract yeast culture kind of "Candida guilliermondii yeast" with the content of phosphatides 0,2-2,0% 40-80 and emulsifier (sulfonated oils) 20-60 (ed.mon. 704989, CL 14 With 9/02, op. 05.01.1980).

the elastoplastic properties.

The technical result of the invention is to improve the quality of the leather.

This result is achieved by the fact that the composition for the fatliquoring of leather, including lipid extract of yeast culture kind of "Candida guilliermondii yeast and emulsifier, optionally contains chlorinated paraffins with chlorine 24-32%, and synthetic esters of fatty acids range From10-C25as the lipid extract it contains chlorinated lipid extract containing phosphatides not less than 60%, and as an emulsifier - sulphonated fish oil in the following ratio, wt.%: Chlorinated paraffins with chlorine 24-32% - 35,0-50,0 synthetic Esters of fatty acids range From10-C25- 25,0-30,0 Chlorinated lipid extract containing phosphatides not less than 60% - 10,0-15,0 Sulphonated fish oil - 15,0-20,0 Distinctive feature of the proposed structure is that the introduction of chlorinated paraffins with chlorine 24-32%, having a dispersing effect, allows the composition evenly distributed on the structure of the dermis, which in combination with the addition of ethers to alcohols C10-C25, the use of chlorinated lipid extract containing phosphatides not less than 60% and is really soft supple leather with high performance properties.

The introduction of chlorinated paraffin wax less than 35 wt.% does not allow the composition is uniformly distributed on the skin layers, their introduction more than 50% results in skin with a dry fretboard. Introduction ethers to alcohols With10-C25less than 25 wt.%, chlorinated lipid extract less than 10 wt.% and sulphonated fish oil less than 15 wt. % does not allow you to get soft supple leather. Introduction more than 30 wt. %, 15 wt.% and 20 wt.% accordingly can lead to excessive unrelated content of fat in the skin, which makes it difficult for subsequent finishing.

The method of obtaining chlorinated lipid extract is as follows.

In the apparatus, equipped with a stirrer, a thermometer, a bubbler for supplying chlorine gas, and a discharge pipe for the exhaust gases and the heated jacket, enter the source of the lipid extract of yeast culture Candida guilliermondii yeast grown on hydrocarbons, with the content of phosphatides not less than 60% and glorious gaseous chlorine at a temperature of 65-70oC for 3-4 hours

For the preparation of the proposed composition of the chlorinated paraffin wax with constant stirring consistently add chlorinated lipid extract, ethers to alcohols With10-C25and sulphonated fish oil at the stated Sonny by known technologies, from raw materials by large and small cattle and sheepskin it is greased on the spent dye bath for skin black and pure water for color at a temperature of 60-65oC for 45-60 min Flow rate of 7-14% by weight of semi-finished product, counting for 100% fat, depending on type of skin. Further processes and operations carried out by standard methods.

Specific examples of compounds for the fatliquoring of leather are shown in table 1. Quality indicators obtained skins for clothing in comparison with the skin of the prototype presented in table 2.

Chlorinated paraffins (CP-250 produced by THE 2493-017-13164401-95, CP-30 - TU 6-01-563-94, ethers to alcohols C10-C25- THE 38 40807-78, sulphonated fish oil - THE 2481-005-51444626-00 the use of the proposed structure allows to obtain a soft supple leather for various purposes, including leather for clothes, with high performance properties.

Claims

The composition for the fatliquoring of leather, including lipid extract of yeast culture kind of “Candida guilliermondii yeast and emulsifier, characterized in that it additionally contains chlorinated paraffins with chlorine 24-32%, and synthetic esters of fatty acids range From10-C25as a lipid e is Aligator - sulphonated fish oil in the following ratio, wt.%:

Chlorinated paraffins with chlorine 24-32% 35,0-50,0

The synthetic esters of fatty acids range From10-C2525,0-30,0

Chlorinated lipid extract

with the content of phosphatides

not less than 60% 10,0-15,0

Sulphonated fish oil 15,0-20,0

 

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SUBSTANCE: invention relates to greasing and emulsifying substances used in fur, leather and other branches of industry. Invention describes a method for deep sulfonation of oxidized vegetable oils, fats and their mixtures, and oxidized mixtures with the nominal viscosity value in the range 33-75 by viscosimeter VZ-4 at 20°C in their treatment with sodium sulfite. The process is carried out in system consisting of oxidized component or mixture of oxidized components, sodium sulfite, water and soap additives, carboxylic acid, phenol and copper (II) salt as a catalyst in bead mill of vertical type at temperature of environment up to practically complete ceasing or quantitative consumption of sodium sulfite and charge of the latter is calculated by the following formula: mNA2SO3 = 0.006 x mOX x (I.N.)OX wherein mOX and (I.N.)OX mean mass and iodine number of oxidized component or mixture of oxidized components, respectively. The mass ratio of oxidized component and water varies in the range from 1:4 to 1:2.5. Dosing additives with respect to oxidized component are following: soap, 2%; carboxylic acid, 4%; phenol, 2.5%. Oxidized flax, sunflower, soybean and cotton oils, oxidized fish oil and mixtures of vegetable oils with fish oil or pig fat are subjected for sulfonation reaction with air in regimen of intensive bubble bubbling at 105 ± 5°. Soaps in indicated system are represented by sodium stearate and sodium oleate and by reaction mixtures of practically quantitative alkaline hydrolysis of fats and vegetable oils also. Benzoic, oxalic, malonic and citric acids are used as acid, and sulfate, acetate and other water-soluble salts of copper (II) are sued as a catalyst dosed in the amount (2-7.5) x 10-4 mole/kg of the parent charge. The sulfonation reaction degree is 33-40%.

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5 cl, 1 tbl, 16 ex

FIELD: tanning industry.

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EFFECT: facilitated procedure; increased amount of product.

1 tbl, 15 ex

FIELD: leather industry.

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EFFECT: simplified process and increased product discharge degree.

1 tbl, 19 ex

FIELD: process engineering.

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1 ex

FIELD: chemistry.

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2 cl, 3 tbl, 5 ex

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2 tbl, 5 ex

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EFFECT: proposed method of drumming leather provides effective antifungal inhibition at high quality of finished skin.

1 cl, 2 tbl, 3 ex

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