9018-04-6, 1,4-丁二醇与α-氢化-ω-羟基聚(氧基-1,4-亚丁基)和1,1’-亚甲基双(4-异氰酸根合苯)的聚合物, POLY[4,4'-METHYLENEBIS(PHENYL ISOCYANATE)-ALT-1,4-BUTANEDIOL/ POLYTETRAHYDROFURAN]
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