CS269590B1 - A method for producing a tanning aid composition - Google Patents

Abstract

The problem of simple and quick production of tannery auxiliary preparation for increasing the thermostability of leather is solved. The essence is that the ingredients of the tannery auxiliary preparation are homogenized at a temperature of 50 to 100 oC for 2 to 4 hours, at a mixer speed of 10 to 40 per minute, and up to an overpressure of 0.1 MPa.

Description

The invention relates to a method of producing a tanning auxiliary preparation made from chemically unmodified or chemically modified by chlorination fatty acid triglycerides, alkaline silicate and water.

Currently, to achieve thermal insulation properties of leather and good heat stability of products such as gloves, aprons or shoes, Široký norfimont produces tanning auxiliary preparations. A method of producing the preparation in a slow-speed mixer by homogenizing components based on triphenyl phosphate or trichlorostyrene phosphate or a preparation based on polyfluorostyrene is known. Solutions of these preparations are applied from solutions of organic solvents, for example methyl ethyl ketone. The production of these preparations is demanding on equipment and a long reaction time. Furthermore, a method of producing alkaline soaps of aliphatic fatty acids with a number of carbon atoms of 8 to 21 is known, from which sparingly soluble chromium complexes are produced in the second phase. The production of synthetic lubricants in special equipment at a slightly elevated temperature is also known. The disadvantage of this production is the need for special equipment and its time-consuming nature. It is also known to produce combined aminated organic compounds with special emulsifiers in mixing devices with a relatively long emulsification time. The disadvantage of producing these preparations is the complexity of the equipment and the long production time. The content of harmful organic substances during their production is also disadvantageous.

The above disadvantages are eliminated by the method of producing a tanning auxiliary preparation, the essence of which is that the preparation components are homogenized at a temperature of 50 to 100 °C, for a period of 2 to 4 hours at a mixer speed of 10 to 40 revolutions per minute and, if necessary, at an overpressure of 0.1 MPa.

The technical effect of the production of a tanning auxiliary preparation is that a preparation is produced by a simple procedure, in a relatively short time, which has an advantageous combined neutralizing, filling and lubricating effect. After application to leather ^{, its} thermostability and overall quality are increased.

The production method according to the invention is further illustrated by the following examples, where the individual components are given in parts by weight.

Example 1

The tanning auxiliary preparation was produced in a heated duplicator reactor by homogenizing 100 parts by weight of beef fat, 25 parts by weight of sodium-potassium silicate with a composition of Na2O3, KgO3:SiO4 1:4 and 25 parts by weight of water, at a temperature of 100 °C, for 4 hours, with constant stirring at a stirrer speed of 10 per minute.

Example 2

The leather auxiliary preparation was produced in a heated duplicator reactor by homogenizing 100 wt. d. of sunflower oil, 10 wt. d. of sodium aluminosilicate with a composition of Na2O3 : AlgO4 ^: SiO2 5.5 : 1.5 : 3.0 and 55 wt. d. of water, at a temperature of 50 °C for 2 hours at a stirrer speed of 25 per minute and an overpressure of 0.05 MPa.

Example 3

The leather auxiliary preparation was produced in a heated duplicator reactor by homogenizing 100 wt. d. of chlorinated beef fat with a chlorination content of 10% with 12 wt. d. of sodium metasilicate with a composition of Na2O3 : SiO2 1 : 1 and 50 wt. d. of water, at a temperature of 60 °C for 2 hours, with constant stirring at a stirrer speed of 20 per minute and an overpressure of 0.1 MPa.

Claims (1)

A method for the production of a tanning auxiliary composition consisting of 1Di-weight-die-casting chemically unmodified or chlorinated chemically-modified acids is described. with a carbon atom number of> 80 degrees of chlorination of 5 to 20%, 5 to 30 parts by weight of alkali cremidite and 10 to 70 parts by weight of water, characterized in that the components of the tannery adjuvant are homogenized at 50 to 100 ° C for 2 to 8 hours, at a stirrer speed of 10 to 40 per minute and at a pressure of 0.1 UPa.