| 英文名称: | | ydroxypoly(oxy-1,4-butanediyl) and 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trim | | 1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-, polymerwith alpha-hydro- omega -hydroxypoly(oxy-1,4-butanediyl) and5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane |
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