Oil-based polyurethane polishing agent used for leather and preparation method of polishing agent

Abstract

The invention belongs to the technical field of leather treatment agents, and particularly relates to an oil-based polyurethane polishing agent used for leather. The polishing agent is composed of dimethylformamide, polycaprolactone, neopentyl glycol, an antioxidant, ethylene glycol, diphenyl methane diisocyanate, cyclohexanone, phenylmethyl silicone oil, butanone, diacetone alcohol and white carbon black. The invention also discloses a preparation method of the oil-based polyurethane polishing agent used for the leather. The oil-based polyurethane polishing agent used for the leather providedby the invention overcomes the problems that a nitrocotton polishing agent on a current market cannot be embossed, the surface loses a gloss after being wiped by n-hexane or rubbed by water, and theleather surface has a white crease and a white top, and has better oil permeability and stronger polishing ability

Description

technical field [0001] The invention belongs to the technical field of leather treatment agents, and in particular relates to an oily polyurethane polishing agent for leather and a preparation method thereof. Background technique [0002] At present, the surface treatment methods of leather products including bags, clothing, shoes, etc. are various, and the effect styles are varied. No matter in surface effect or in feel, the imitation leather effect is still pursued. Before the leather is used, its surface needs to be polished to remove stains, scratches, etc. on the surface, and to make the surface look brighter. The use of polishing agent can improve the quality of leather products by leaps and bounds. As a leather top coating material, leather polishing agent has a vital impact on the appearance, hygienic performance and physical and mechanical properties of leather. The polishing agent based on nitrocellulose in the market cannot withstand high temperature, so it canno...

AI Technical Summary

Problems solved by technology

The polishing agent based on nitrocellulose in the market cannot withstand high temperature, so it cannot be embossed at all, and after being wiped with white electric oil or water softening treatment, the surface will lose gloss, fade, and the color will turn gray. The surface of the leather treated with nitrocellulose polishing agent appears whitening and top whitening

At present, there are polyurethane polishing agents on the market, but their oil penetration is worse than that of nitrocellulose polishing agents, and polyurethane polishing agents have poor polishing ability because of their strong coating powder performance.