Special washing branding discoloration resin for synthetic leather and preparation method thereof

Abstract

The invention relates to a special washing branding discoloration resin for synthetic leather. The branding discoloration resin comprises the following components: polyurethane resin, silicon dioxide extinction powder, micronization wax powder, a plasticizing agent, an organosilicon feeling agent, butyl acetate and N, N-dimethylformamide. The method comprises the following steps: 1, adding the polyurethane resin, the N, N-dimethylformamide and the butyl acetate into a reactor, and mixing uniformly; 2, adding the plasticizing agent, the silicon dioxide extinction powder and the micronization wax powder while stirring, and stirring for 20-40 minutes so as to completely dispersing the plasticizing agent, the silicon dioxide extinction powder and the micronization wax powder; and 3, testing the viscosity of a product, filtering and discharging after qualification. The branding discoloration resin is good in physical property, good in wear resistance and scratch resistance and good in visual effect, and can be widely used in occasions such as shoes and bags with high performance requirements on the synthetic leather.

Description

technical field [0001] The invention relates to a preparation method of a special resin for synthetic leather, in particular to a resin capable of achieving the effect of branding and discoloration through washing with water and a preparation method thereof. technical background [0002] As a substitute for genuine leather, polyurethane synthetic leather has a lower cost and its performance is close to or surpasses that of similar genuine leather products. Therefore, it is widely used in various fields such as clothing, luggage, footwear and home furnishing. With the improvement of people's living standards and aesthetic concepts, the traditional single-color synthetic leather products can no longer meet people's needs. Improving the appearance and texture of synthetic leather through surface modification has become an indispensable means in the production process of synthetic leather. Brand discoloration means that the surface of synthetic leather is discolored by high-tem...

AI Technical Summary

Problems solved by technology

[0004] 1) Wet synthetic leather contains a lot of wood powder and other fillers, and has an open cell structure, resulting in low strength, poor wear resistance and scratch resistance. It is generally used as the middle layer of synthetic leather, such as branded and discolored synthetic leather Used alone, it is difficult to meet the requirements when it is applied to occasions such as shoes and bags that require high physical properties of synthetic leather

[0005] 2) The production process of ordinary wet branded synthetic leather determines that its color and surface pattern are relatively single, which cannot meet high aesthetic requirements

[0006] 3) Ordinary wet branded synthetic leather contains a lot of wood powder and other fillers, resulting in insufficient burnt feeling on the branded part

However, wet-process synthetic leather is generally used for the middle layer of synthetic leather, and its strength is poor, so it is difficult to use directly