英文名称:1,3-Butanediol, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,1'-methylenebis[4-isocyanatobenzene] and 2,2'-oxybis[ethanol]; 1,3-Butanediol, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol, 1,1'-Methylenebis[4-Isocyanatobenzene] And 2,2'-Oxybis[Ethanol]