Polymerized thylene carbonate urethane elastomer and its preparation method

Abstract

The invention discloses a polyethylene carbonate polyurethane elastomer and making method, which produces polycarbonate polyhydric alcohol through carbon dioxide and oxirane with 20-60 percent diisocyanate, 0.05-2 percent polymerization inhibitor, 2.4-17 percent chain-extending agent and or cross linking agent and 0-0.4 percent catalyst. The method possesses better mechanic property, plasticity, anti-oxidizing property and water weakened-durability, which can be applied in the liner, screen, sealing ring and medical equipments.

Description

technical field

[0001] The invention relates to an aliphatic polycarbonate polyurethane elastomer, in particular to a polyethylene carbonate polyurethane elastomer, and also to a preparation method of the polyurethane elastomer. Background technique

[0002] The polycarbonate polyols used in the preparation of aliphatic polycarbonate polyurethane elastomers are polyhexylene carbonate diol, polybutylene carbonate diol, polycarbonate Propylene glycol, etc. For example, polycarbonate polyurethane elastomer (Xie Xingyi, Liu Fang, Zhong Yinping, etc.) with excellent biological properties is synthesized from polyhexamethylene glycol carbonate diol as a raw material. Biomedical Engineering Journal, 1999, 16 (Supplement): 121-122), or synthesized some solvent-resistant aliphatic polycarbonate polyurethane elastomers (Harris R F, Joseph M D, avidson C D et al. JAppl Polym Sci, 1990, 41: 487-507), Or take polypropylene carbonate and toluene diisocyanate (TDI) as raw material to synt...