Catalytic copolymerization of bicyclic amide acetals and...

C - Chemistry – Metallurgy – 08 – G

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402/154

C08G 18/38 (2006.01)

Patent

CA 1262199

14 ABSTRACT OF THE DISCLOSURE An improved process for the copolymerization of a bicyclic amide acetal with a polyisocyanate comprising carrying out the copolymerization reaction in the presence of a catalyst selected from the group con- sisting of tertiary amines, organo tin compounds and iron and nickel salts at a temperature in the range of from about 10°C. to 200°C. is described. 14

523059

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