发明授权
US06586485B1 Production of flexible polyurethane foams 失效
生产柔性聚氨酯泡沫

Production of flexible polyurethane foams
摘要:
In a process for producing flexible polyurethane foams by the reaction known per se of polyisocyanates with compounds containing at least two hydrogen atoms which react with isocyanate, the reaction is carried out in the presence of cyclic or heterocyclic compounds containing at least one reactive hydrogen atom.
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