英文名称:Propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2-methyl-, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,1'-methylenebis[4-isocyanatocyclohexane] and 2-oxepanone; Propanoic Acid, 3-Hydroxy-2-(Hydroxymethyl)-2-Methyl-, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol, 1,1'-Methylenebis[4-Isocyanatocyclohexane] And 2-Oxepanone