英文名称:1,4-Butanediol, polymer with 1,1-methylenebis4-isocyanatocyclohexane, methyloxirane and oxirane; 1,4-Butanediol, polymer with 1,1'-methylenebis(4-isocyanatocyclohexane), 2-methyloxirane and oxirane; 1,4-Butanediol, polymer with 1,1'-methylenebis(4-isocyanatocyclohexane), methyloxirane and oxirane