Water-based PU net-shaped crack coating agent for artificial leather

Abstract

The invention discloses a water-based PU net-shaped crack coating agent for artificial leather. The agent is composed of the following raw materials, by weight: 45-55% of waterborne polyurethane resin, 15-20% of water-based paint resin, 20-35% of water, 0.3-2% of an organosilicon flatting agent, 2-3% of a defoaming agent, 0.5-4% of a waterborne polyurethane thickener, and 3-5% of a waterborne modified polyethylene wax emulsion. The water-based PU net-shaped crack coating agent for artificial leather provided by the invention employs water as a solvent to substitute toxic solvents, such as dimethylformamide and butanone, and has performances of non-combustibility, safety, environment-friendliness and cost saving; and the net-shaped crack coating agent has advantages of good film-forming property, firm bonding, solvent resistance, cold resistance, hydrolysis resistance and thermal aging resistance. The product prepared by the net-shaped crack coating agent provided by the invention has advantages of good crack effect, strong feel of genuine leather, fine texture and good permeability, etc.

Description

technical field [0001] The invention relates to a resin for artificial leather, in particular to a water-based PU reticulated coating agent applied to the front-end and back-end treatment of artificial leather. Background technique [0002] At present, artificial leather products have gradually become a popular trend in the future, and artificial leather has been widely used in the production of luggage, clothing, footwear and other products. The base fabric of PU leather is a canvas PU material with good tensile strength. In addition to being coated on the top of the base fabric, the base fabric can also be included in the middle, so that the existence of the base fabric cannot be seen from the outside. PU leather has physical properties. Good, resistance to twists and turns, good softness, high tensile strength, and breathability, so PU leather is widely used in the fabric of footwear or the weight-bearing parts of bags. [0003] At present, the PU reticulated coating age...

AI Technical Summary

Problems solved by technology

[0004] 1. The organic solvent contained in the solvent-based reticulated coating agent will cause the dissolution of the artificial leather or the bottom layer of the artificial leather, and the treated artificial leather will not feel good;

[0005] 2. The organic solvent contained in the solvent-based reticulation coating agent not only has high cost, strong odor, and is easy to pollute the environment, but also has safety hazards such as flammability and explosion;

[0006] 3. The artificial leather products prepared by solvent-based reticulated coating agents have poor comprehensive effects such as visual effects, viscosity, stability, and hand touch.