Yellow stain resistant blowing promoter for coating leather

Abstract

The invention discloses an auxiliary chemical that can increase the coverage when being used for coating in tanning industry and is a non-yellowing blowing promoter used for leather coating. The blowing promoter comprises the following ingredients (weight percentage): 5-20 percent of acrylic acids microspheres, 10-30 percent of WBPU, 10-30 percent of waterborne acrylic resin, 0-10 percent of octowax, 0-10 percent of fat liquor, 1-5 percent of stabilizer and 20-40 percent of water. The product of the invention adopts foam microspheres, thus having excellent coverage and completely covering certain flaws and spots on inferior leather; the invention adopts acrylic acid / nitrile foam microspheres as a substitute for general polyvinyl chloride, as well as adopts various non-yellowing waterborne polymer resins and various non-yellowing waterborne oil / wax auxiliaries, to compound a non-yellowing leather priming coat auxiliary, which has excellent non-yellowing performance high up to the topmost 5 grade and does not turn yellow within 24 hours after 4 hours of ultraviolet irradiation at the temperature of 120 DEG C. The use of the product of the invention can promote the tanning grade to an extreme extent in tanning industry.

Description

technical field [0001] The invention relates to a chemical auxiliary agent used in the leather industry to increase the covering property for finishing, and belongs to the technical field of fine chemicals. Background technique [0002] At present, it is used as primer resin for shoe upper leather, furniture leather, etc. The method of repairing wounds is still the traditional method of using wound repairing paste, which is complicated in process and damages the skin: use a small scraper to fill the paste into the concave The moisture in this paste is easy to volatilize, and it will lose water and become dry after a period of time. After the repair paste has dried, the part that has been painted with repair paste should be polished smooth, just like when applying it. This step needs to be polished very carefully, otherwise it will damage the leather; and because it is filled in a small area, its performance will be different from that of the adjacent parts in terms of feel a...

AI Technical Summary

Problems solved by technology

[0002] At present, it is used as primer resin for shoe upper leather, furniture leather, etc. The method of repairing wounds is still the traditional method of using wound repairing paste, which is complicated in process and damages the skin: use a small scraper to fill the paste into the concave The moisture in this paste is easy to volatilize, and it will lose water and become dry after a period of time. After the repair paste has dried, the part that has been painted with repair paste should be polished smooth, just like when applying it. This step must be polished very carefully, otherwise it will damage the leather; and because it is filled in a small area, its performance will be different from that of the adjacent parts, and the final leather grade will not be greatly improved.