The method of skin treatment

 

(57) Abstract:

The inventive when dyeing leather anionic dye as a cationic fixer use alkyldimethylbenzylammonium in the amount of 1.5 to 2.5 wt.% skin. table 1.

The invention relates to the leather industry, in particular for dyeing and anti musty leather processing in aqueous solutions.

The known method of leather processing, including dyeing chrome-plated semi-finished product in the presence of imported emulsifiers and fixers [1]

The disadvantage of this method is the complexity and high cost of chemicals to skin treatment.

Closest to the proposed method is a method of skin treatment with an aqueous solution of anionic dye with subsequent fixation of the cationic retainer in the amount of 2 to 4% by weight of the skin. As a cationic fixer use atony [2]

The disadvantage of this method is not sufficiently high pressestelle received skin that requires treatment skin antifungal drugs.

The aim of the invention is to increase pressestelle skin while maintaining the quality of the painting.

the m and the consolidation of the cationic dye fixative, as a cationic fixer use alkyldimethylbenzylammonium in the amount of 1.5 to 2.5% by weight of the skin.

Alkyldimethylbenzylammonium (ketamin "HA") is a paste light yellow color with the content of the basic substance 92 97 wt. unreacted tertiary amine of no more than 0.5 wt. salt of the tertiary amine to 2 wt. and impurities of the original substances else. This product is used as the acid corrosion inhibitor.

The method of skin treatment carried out as follows.

The tanned with chromium salts prefabricated of leather used for manufacturing of suede, color anionic dye, such as blue NM. Dyeing is carried out at a temperature of 50 60oC, LCD 2 at a flow rate of dye by weight of the skin for 40 minutes Then add alkyldimethylbenzylammonium in the amount of 1.5 to 2.5% by weight of the skin and rotate the drum 20 minutes after dyeing, the skin is washed and it is greased.

The table shows the data flow of the latch and indicators of pressestelle.

In accordance with the above proposed method of processing can increase the shelf life of the skin and to exclude from technology toxic antifungal drugs.

The method of treatment, trichosis the fact that as a cationic fixer use alkyldimethylbenzylammonium in the amount of 1.5 to 2.5% by weight of the skin.

 

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The invention relates to methods for feeding means for the leather and fur industry.

FIELD: leather industry.

SUBSTANCE: semifinished product is degreased, neutralized, dyed, and lubricated. Dyeing is performed in two washing-interrupted steps with anionic black dye consumed in amount 0.5-0.6% of the weight of semifinished product in each dyeing step. Lubrication is followed by retannage with chrome tanner in amount 0.6-1.0% of the weight of semifinished product (calculated for chromium oxide) and treatment with 0.8-1.0% of spindle oil.

EFFECT: achieved deep black color and high performance characteristics.

1 tbl, 5 ex

FIELD: tannery or furry production.

SUBSTANCE: the invention is pertaining to the field of tannery or furry production and may be used for a piece by piece treatment of a tanning, furry semi-finished product with emulsions of "water in oil" type. The device for impregnation of sheets contains a mounted on the frame bath with a working compound, in which a corrugated roller is dipped, and also a feeding and auxiliary conveyers and a smoothing roller, a supporting means with a resilient counterbody, an actuator, a tool for removal of a finished semi-product, a device for creation of a hydrodynamic wedge and a pinch roller for engagement of the ribbed roller with the feeding conveyor. The problem of the presented invention is - development of the device simple in its servicing with a high reliability allowing to realize the process of impregnation more efficiently with a possibility of its installation in an automatic production line.

EFFECT: the invention presents a device simple in its servicing, having a high reliability, more efficient realization of the process of impregnation, a possibility of its usage in an automatic production line.

2 dwg

FIELD: tannery industry.

SUBSTANCE: claimed method includes treatment of chrome-tanned semi-finished product with antiseptic such as polymineral obtained from natural non-metal fossils (minerol), which is used in amount of 5-10 mass % based on semi-finished product. Minerol is also used as filler being introduced in retanning step with chrome compounds in amount of 5-10 mass % based on semi-finished product.

EFFECT: effective biological leather conservation after chrome tanning.

3 cl, 1 tbl

FIELD: chemical technology.

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%.

EFFECT: improved preparing method.

5 cl, 1 tbl, 16 ex

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