| 英文名称: | | polymer with 1,4-butanediol, 4,4'-diisocyanato-3,3'-dimethyl-1,1'-2-oxepanon | | biphenyl, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 2,2'-[1,4-phenylenebis( | | oxy)]bis[ethanol] | | 2-oxepanone, polymer with 1,4-butanediol,4,4'-diisocyanato-3,3'-dimethyl-1,1'-biphenyl,2-ethyl-2-(hydroxymethyl)-1,3-propanediol and |
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