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Isocyanate composition and its use in the preparation of expanded polyurethane with improved physico-mechanical properties
Isocyanate composition and its use in the preparation of expanded polyurethane with improved physico-mechanical properties
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机译:异氰酸酯组合物及其在制备具有改善的物理机械性能的膨胀聚氨酯中的用途
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摘要
Isocyanate compositions with isocyanate functionality between 2.2 and 2.9 which include: a) 20 to 80% by weight of the reaction product of methylene diphenyl isocyanate (MDI) with an ethylene oxide (EO)/propylene oxide (PO) polyether polyol of functionality 2 to 8, an average molecular weight of 200 to 6000, and an ethylene oxide content of 20 to 90% having a free NCO group content of 26 to 33% by weight; and 20 to 80% by weight of an MDI polymer.
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