Method for making polybenzobisoxazole containing polymer

Details Method for making polybenzobisoxazole containing polymer Method for making polybenzobisoxazole containing polymer

C - Chemistry, Metallurgy

08

G

C08G 73/00 (2006.01) C08G 69/32 (2006.01) C08G 73/22 (2006.01)

Patent

CA 2614967

A method of making polybenzobisoxazole containing polymer by use of a non- polybenzobisoxazole polymer, hydroxylating the polymer, forming a solidified polymer and heating the solidified polymer wherein ring closure occurs in the hydroxylated polymer.

L'invention concerne un procédé de production d'un polymère contenant un polybenzobisoxazole au moyen d'un polymère sans polybenzobisoxazole, lequel procédé consiste à hydroxyler ce polymère, à former un polymère solidifié puis à chauffer le polymère solidifié, la cyclisation ayant lieu dans le polymère hydroxylé.

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