发明授权
US4562240A Bicyclic amide acetal/polyol/polyisocyanate polymers 失效
双酰胺缩醛/多元醇/多异氰酸酯聚合物

Bicyclic amide acetal/polyol/polyisocyanate polymers
摘要:
A process is described for preparing novel polyurethane polymers which have good impact resistance and other desirable physical properties, said process comprising interpolymerizing a mixture of a bicyclic amide acetal, a polyol and a polyisocyanate.
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