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US4708971A Bicyclic amide acetal/polyisocyanate polymers 失效
双酰胺缩醛/多异氰酸酯聚合物

Bicyclic amide acetal/polyisocyanate polymers
摘要:
The process for preparing polyurethanes by the reaction of a bicyclic amide acetal and a polyisocyanate in the presence of a plasticizer such as dioctyl phthalate and a polyurethane catalyst such as stannous octoate is described.
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