Water-based PU waterproof resin for synthetic leather

Abstract

The invention discloses a water-based PU waterproof resin for synthetic leather. The resin is composed of the following raw materials, by weight: 35-40% of a water-based fluorosilicone resin, 20-25% of a waterborne hydroxyl crosslinking agent, 15-35% of water, 0.3-0.5% of an aqueous wax emulsion, 1.5-2.5% of a silicone oil smoothing agent, 0.5-1% of an organosilicon flatting agent, 3-5% of an organosilicon defoamer, 2-6% of a water-based modified polyethylene wax emulsion, and 1-2% of a waterborne polyurethane thickener. The water-based PU waterproof resin for synthetic leather provided by the invention employs water as the solvent to substitute toxic solvents, such as dimethylformamide and butanone, and has advantages of non-combustibility, safety, environment-friendliness and cost saving, etc. A finished product prepared by the water-based PU waterproof resin for synthetic leather provided by the invention has full handle, high light, high brightness, strong slippery waxy handle, fine texture and good air permeability; and the prepared synthetic leather has excellent comprehensive performances in handle, smoothness, water resistance and wax feeling.

Description

technical field [0001] The invention relates to a waterproof resin for artificial leather, in particular to a water-based PU waterproof resin for artificial leather applied to the front-stage process 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 waterproof res...

AI Technical Summary

Problems solved by technology

[0004] 1. The organic solvent contained in the solvent-based waterproof resin 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 solvent-based waterproof resin not only has high cost, strong smell, 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 waterproof resins have poor comprehensive effects such as viscosity, stability, and hand touch.