SU969730A1 - Composition for fat-liquoring skins - Google Patents

Description

(54) COMPOSITION FOR LEATING THE SKIN

one

The invention relates to light industry and can be used in leather production for fattening a wide range of leather from various types of leather raw materials.

Closest to the present invention is a skin grease composition comprising derivatives of phosphoric acid ester partially neutralized with an amine. The composition contains mono- and diesters of polyglycols and fatty acids, in particular tall oil fatty acids with a molecular weight of 300-1000 1.

The dispersion of particles of the indicated composition is low, which leads to difficulties when it is introduced into the semi-finished product when it is greased, especially in the middle layers. In order to improve the penetrating ability of the composition, a non-ionic surfactant is introduced into it, which leads to a decrease in the water resistance of the skin and, consequently, to a deterioration of its performance properties and appearance.

The purpose of the invention is to improve the quality of leather.

This goal is achieved by the fact that the composition for fattening of the skin, including derivatives of phosphoric acid ester, partially neutralized by the amine, further contains aliphatic alcohols 5 of the Su-Cso fraction, as derivatives of the phosphoric acid ester, partially neutralized by the amine, triethanolamine salts of alkylphosphates of the fraction in the following ratio of components 10 wt.%:

Triethanolamine salts of alkylphosphates 40-60 Aliphatic alcohols fraction 40-60

Both components of the composition have a hydrocarbon chain containing 7–20 carbon atoms. The composition is a brown brown liquid. The emulsion composition is stable at pH values of 1.0–9.0, which makes it possible to use it in liquid treatments of semi-finished products as in acidic media (tanning, chrome retanning), as well. and in dyeing and fatty processes that take place in a weakly alkaline medium. The use of the composition in greasing provides very soft elastic leather with the required water resistance, high resistance of the coating to repeated bending. This is achieved primarily because the proposed composition, unlike the prototype, does not contain polyglycols having a high molecular weight, nor does it contain non-ionic emulsifiers, which significantly increase the hydrophilicity of the skin.

The composition is a ready preparation for fattening of the skin, the drug is given the name "Efosol.

Example 1. Triethanolamine salts of alkyl phosphates based on secondary fatty alcohols of the Sue-Cgo fraction are fed to the reactor with a capacity of 2.0 m equipped with a mixer, secondary fatty alcohols of the Su-Sgo fraction are then fed with secondary fatty alcohols from the collection of "crude alcohols Ciu-Sgo fractions. The process for the preparation of a skin fat formulation is carried out with continuous displacement at 70-80 ° C for 1.0-1.5 h. Ratio of components, / o:

Triethanolamine salts

alkyl phosphates40

Secondary fatty

alcohols C10-C2050

Example 2. A composition for fattening the skin is prepared as in Example 1. The ratio of the components, / o:

Triethanolamine

alkyl phosphate salts50

Secondary fatty

alcohols50

Example 3. A composition for fattening the skin is prepared as in Example 1. The ratio of the components,%;

Triethanolamine

alkyl phosphate salts60

Secondary fatty

alcohols40

Example 4. In a reactor with a capacity of 2.0 m, equipped with a mixer, with the help of a pump, triethanolamine salts of alkyl phosphates based on primary fatty alcohols of the Sue-Sc fraction are supplied from the collection. Then from the collection of raw alcohols, primary fatty alcohols of the Xu-Cjg fraction are fed to the reactor with the calculated amount of triethanolamine salts of alkyl phosphates. The process of obtaining the composition is carried out with continuous stirring at 70-80 ° C in

for 1.0-1.5 hours. The ratio of components,%:

Triethanolamine

salts of alkyl phosphates 40

Primary fatty

alcohols60

Example 5. A composition for fattening the skin is prepared according to Example 4. The ratio of components,%:

Triethanolamine

alkyl phosphate salts50

Primary fatty

alcohols su

Example 6. A composition for fattening the skin is prepared according to Example 4. The ratio of components,%:

Triethanolamine

alkyl phosphate salts60

Primary fatty

alcohols do-c 1840

Example 7. In a reactor with a capacity of 2.0 m, equipped with a mixer, using a pump serves from the collection triethanolamine salts of alkyl phosphates based on primary fatty alcohols fraction. Then from the collection of "crude alcohols in the reactor with the calculated amount of triethanolamine salts of alkyl phosphates, primary fatty alcohols of the Su-Ci2 fraction are fed.

The process of obtaining the composition is carried out with continuous stirring at 70-80 ° C for 1.0-1.5 hours. The ratio of components,%:

Triethanolamine

salts of alkyl phosphates 40

Primary fatty

alcohols60

Example 8. The composition for skin fattening is prepared according to Example 7. The ratio of the components,%:

Triethanolamine

alkyl phosphate salts50

Primary fatty

alcohols C-Ci250

Example 9. A composition for fattening the skin is prepared according to Example 7. The ratio of the components, / Q:

Triethanolamine

alkyl phosphate salts60

Primary fatty

alcohols With -Ci2 40

The table shows the comparative data of the results of the determination of the analytical parameters of the leathers, fattened with the proposed composition, as well as the compositions according to the prototype and according to the approved method.

As can be seen from the table, the fat content in the middle layer of samples of fatty compounds 1-9 is 55.1-64.4 / o of the fat content in the skin, while in the control, i.e. Only 42.1% and 33.5%, respectively, were prepared using the compositions of the prototype and the approved method. A higher content of fat in the middle layer contributes to the skin's softness. Experienced skins, aimed at the production of varnish, have a higher quality of coating, as indicated by the indicator of the resistance of the coating to repeated bending. The water resistance of the skin, determined by the time of absorption of a drop of distilled water, is also 4 times higher in experienced leather compared to that of the prototype, and 2.5 times higher than the water resistance of samples that have been fattened according to an approved procedure using sulfonated fish oil. This indicator is of great importance both for the performance characteristics of pile leathers, which require high water resistance, and for the characteristics of the preparation of the semi-finished product for finishing.

The proposed composition, as shown by tests, yields positive results when processing a wide range of leather from various types of hides.

Below is a technical scheme for the production of elastic chrome tanned leather for the upper of shoes made from cattle hides. The consumption of the preparation "Ephosol is 8.0-9.0% by weight of the semifinished product. The consumption of materials is given in percent by weight of the sliced semi-finished product.

After tanning, laying, pressing, planing, dyeing is performed at LCD 2.0-2.5 at a temperature of 35-40 ° C for 30 minutes. Dye consumption and dyeing formulation - according to approved methods. In dyeing, the calculated amount of dyes, previously dissolved at 70 ° C in a 20-ZO-krytnom amount of water, is poured into the drum at mixing through the hollow axis. Then the dyeing liquid is drained to 8-1.0 and the retanning combined with the first fat phase is performed, with the following consumption of materials,%:

Sintan number 2 (counting on dubs) 10.0

Chrome tanning agent (calculated on chromium oxide) 0.5-1.0

The drug "Efosol 3.0-3.5

When retanning, other materials are loaded into the drum through the hatch, and the fatty preparation Efosol is poured as the drum rotates through the hollow axis in the form of a 25% aqueous emulsion, the process takes 1.0-1.5 hours, the pH of the liquid at the end of treatment 3 8-4.0. After retanning, combined with pre-fattening, the liquid is drained and the semi-finished product is washed with running water for 15-20 minutes, the temperature at the start of washing is 35-40 ° C, at the end of washing -

55-60 ° C.

At the end of the flushing, water is poured into the drum to an LCD of 0.8-1.0 at 55-60 ° C, then poddublivanie - filling the semi-finished product with the following consumption of materials,%:

Sintan No. 18 (counting on dubbing) 1.0-1.5 Sintan No. 2 (counting on dubbing) 1.0-1.5 Preparation of VOS 2.5

All materials are loaded into the drum through the hatch. The duration of the process is 1.0-1.5 h, then the liquid is drained and produced at LC 0, 0, at a temperature of 55-60 ° C for 1.0-1.5 h. Material consumption during fattening,%: Water ammonia solution (25%) 0.5

Sodium sulfite 1.0

The drug "Efosol 5.5-6.5

First, the calculated amounts of ammonia and sodium sulfite solutions (1: 5) are poured into the drum during rotation through the hollow axis. After 15-20 minutes, water emulsion (25%) of the preparation "Efosol. After fattening, rinsing is carried out for 10-15 minutes and the semifinished product is unloaded to a bed for 6-8 hours. All further processes and operations are carried out according to the approved method of skin production.

The drug "Efosol, if necessary

can be mixed with other fatty

substances in various ratios in

depending on the type of developed skin.

Using the intended composition will provide a wide range of soft, elastic leather from various types of raw materials, improve the quality of leather, increase their water resistance, reduce the complexity of dyeing and fatty processes through the use of the finished product of liquid consistency, expanding the raw material base of materials used for skin fat.

Claims (1)

Invention Formula A skincare compound containing derivatives of phosphoric acid ester. partially neutralized with an amine, characterized in that, in order to improve the quality of the leather, it additionally contains aliphatic alcohols of the C-C20 fraction. and as derivatives of phosphoric acid ester, partially neutralized by the amine, the triethanolamine salts of alkylphosphates of the fraction in the following ratio of components, (wt./about): Triethanolamine salts of alkyl phosphates Su fractions- € 2040-60 Aliphatic alcohols Fractions C, .- С2040-60 Sources of information taken into account in the examination 1. UK patent number 1332253, cl. C 14 C 9/00, 1973 (prototype).