| 英文名称: | | 2-oxepanone, polymer with 1,4-butanediol, .alpha.-hydro-.omega.-hydroxypoly(oxy | | -1,2-ethanediyl) and 1,1'-methylenebis[isocyanatobenzene] | | 2-oxepanone, polymer with 1,4-butanediol,.alpha.-hydro-.omega.-hydroxypoly(oxy-1,2-ethanediyl) and1,1'-methylenebis[isocyanatobenzene] |
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