发明申请
US20090112017A1 METHOD FOR PRODUCING POLYISOCYANATES 有权
生产聚异氰酸酯的方法

METHOD FOR PRODUCING POLYISOCYANATES
摘要:
The invention relates to a process for preparing polyisocyanates by reacting primary amines with phosgene in the presence of a solvent, wherein ionic liquids are used as solvents.
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