| 英文名称: | | 1,2-ethanediol, polymer with .alpha.-hydro-.omega.-hydroxypoly(oxy-1,4-butanedi | | yl) and 1,1'-methylenebis[isocyanatobenzene] | | 1,2-ethanediol, polymer with.alpha.-hydro-.omega.-hydroxypoly(oxy-1,4-butanediyl) and1,1'-methylenebis[isocyanatobenzene] |
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