Supersoft wet pressure-change resin and preparation method and application thereof

Abstract

The invention relates to the technical field of chemical products and preparation methods thereof, and discloses supersoft wet pressure-change resin and a preparation method and application thereof. The supersoft wet pressure-change resin is prepared from the following raw materials in kilogram by weight: 50 kg of PE-1, 50 kg of PE-2, 100 kg of PE-3, 25 kg of PCDL-2000, and 697 kg of DMF (DMF is delivered for two times, 300 kg of DMF is delivered for the first time, and 397 kg of DMF is gradually delivered for the second time). According to the supersoft wet pressure-change resin and the preparation method and application thereof, by selecting and matching the proper proportion of polycarbonate, the high-temperature resistance of the resin can be greatly improved, scorching of the surfaceof synthetic leather can be prevented while the pressure change effect is achieved, by selecting polyester with different molecular weight for mixing and matching, the symmetry of a polyurethane molecular structure is lowered, better solubility is achieved compared with products made of polyester with the single molecular weight, the low-temperature resistance is good, the resin appearance is moreclear and transparent, and ethylene glycol is selected during chain extender selecting to be matched with the appropriate amount of other long-chain chain extenders.

Description

technical field [0001] The invention relates to the technical field of chemical products and preparation methods thereof, in particular to an ultra-soft wet-process pressure change resin and its preparation method and application. Background technique [0002] Resin usually refers to an organic polymer that softens or melts after being heated. When softened, it has a tendency to flow under the action of an external force. It is solid and semi-solid at room temperature, and sometimes it can be liquid. In a broad sense, it can be used as a raw material for plastic products. Any high molecular compound is called a resin, the relative molecular weight is uncertain but usually high, it is solid, medium solid and pseudo solid at room temperature, sometimes it can be a liquid organic substance, it has a softening or melting temperature range, under the action of external force It has a tendency to flow and is often shell-shaped when broken. In a broad sense, it refers to polymers o...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an ultra-soft wet-process pressure change resin and its preparation method and application to solve the above problems, which can effectively improve the high temperature resistance of the resin, and at the same time have a good washing effect and smooth surface , good myogenicity, and the pressure change effect is stable and uniform, which solves the problem of poor washing effect and low temperature resistance of a few soft trademark resins. The problem of long time and general production efficiency