发明授权
US06667370B1 Method for producing prepolymers containing isocyanate end groups, incorporating a small proportion of base isocyanates 失效
制备含有异氰酸酯端基的预聚物的方法,其中加入少量的碱异氰酸酯

Method for producing prepolymers containing isocyanate end groups, incorporating a small proportion of base isocyanates
摘要:
This invention relates to a process for producing prepolymers, which contain isocyanate terminal groups and which have a very low content of free isocyanate starting materials, from polyester polyols and polyisocyanates.
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