Performance additive used in leather working

Abstract

The invention relates to the technical field of leather working, and discloses a performance additive used in leather working. A rare earth compound and a plant synthesized tanning agent are added in a tanning agent; the mass percentage of the rare earth compound accounts for 1.0-1.5% of the mass percentage of the tanning agent, the rare earth compound comprises lanthanum oxide, praseodymium oxide, holmium oxide and europium oxide, and the adding ratio is 4-6: 2-3: 1-2: 0.3-0.5; the tanning agent which contains the rare earth compound can remarkably improve the tensile strength, the water resistance and the wear resistance of leather products, and further has a dyeing assisting effect, and obvious color fixation and color burn can be achieved; and the mass percentage of the plant synthesized tanning agent accounts for 4.5-5.5% of the mass percentage of the tanning agent, and extracted plants of the plant synthesized tanning agent comprise stenoloma chusana, Chinese parasol trees, Chinese ilex, Chinese galls, lacquer trees and tea trees. By the used plant synthesized tanning agent, leather forming tisseus can be compact, thick and plump, the surface is processed densely, and the softness and elongation percentage are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of leather processing, and in particular relates to a modification auxiliary agent used in leather processing. Background technique [0002] Leather shoes refer to footwear with natural leather as the upper and leather or rubber, plastic, PU foam, PVC, etc. as the sole, which are processed by sewing, gluing or injection molding. Leather shoes are air-permeable, moisture-absorbing, have good hygienic performance, and are the shoes with the highest grade among all kinds of shoes and boots. Thousands of years ago, human ancestors had the habit of wearing shoes, wrapping their feet with animal skins, from leather shoes to modern leather shoes, leather shoes have a long history. In China, the production of modern leather shoes has only a history of more than 120 years, but because the shape, style, structure and wearing function of leather shoes are better than other footwear, the production of leather shoes has...

AI Technical Summary

Problems solved by technology

[0003] Tanning is the processing of raw hides and skins into leather products. This is a series of mechanical and chemical treatments. Except for basic inorganic materials such as acids, alkalis, and salts, the rest of these chemicals are called leather chemicals. Among them, leather auxiliaries Good or bad has a great impact on the quality of tanning. As people have higher and higher requirements for the style and quality of leather, the existing leather auxiliaries can no longer meet the needs of tanning.

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