Waterborne polyurethane (PU) bottoming resin for artificial leather

Abstract

The invention discloses a waterborne polyurethane (PU) bottoming resin for artificial leather. The resin consists of the following raw materials in percentage by weight: 50 to 65 percent of waterborne hydroxyl cross-linking agent, 30 to 40 percent of water, 1 to 3 percent of amino-modified silicone oil slip agent, 0.5 to 1 percent of organic silicon flatting agent, 2 to 5 percent of organic silicon deforming agent and 0.5 to 2 percent of waterborne PU thickening agent. According to the waterborne PU bottoming resin for the artificial leather, water is used as a solvent, replaces dimethylformamide, butanone and other toxic solvents, and has non-combustible performance, safety performance, environment-friendly performance and cost-saving performance; the bottoming resin has the advantages of high film-forming property, high adhesion fastness and solvent-resistant, cold-resistant, hydrolysis-resistant and heat-aging-resistant coatings; and a finished product made of the bottoming resin has the advantages of handfeel fullness, good bottoming effect, good genuine leather feeling, fine and smooth texture, high air permeability and the like.

Description

technical field [0001] The invention relates to a resin for artificial leather, in particular to a water-based PU primer resin for artificial leather, in particular to a water-based PU primer 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...

AI Technical Summary

Problems solved by technology

[0004] The organic solvent contained in the solvent-based primer resin will cause the dissolution of the artificial leather or the bottom layer of the artificial leather, and the treated artificial leather feels bad; the organic solvent contained in the solvent-based primer resin is not only high in cost, but also has a strong smell and is easy to pollute environment, and there are safety hazards such as flammability and explosion; artificial leather products prepared from solvent-based primer resins have poor comprehensive effects such as primer effect, viscosity, stability, and hand feel.