Continuous preparation of linear high molecular weight...

Details Continuous preparation of linear high molecular weight... Continuous preparation of linear high molecular weight...

C - Chemistry, Metallurgy

08

G

402/245

C08G 69/46 (2006.01) C08G 69/28 (2006.01)

Patent

CA 2026500

Linear high molecular weight polyamides containing a regulated level of amino and carboxyl end groups are prepared in a continuous process by reacting polyamides in the melt with polyamide-forming diamines or dicarboxylic acids by continuous mixing for a residence time of ~ 10 minutes, granulating the polyamide, and further condensing the polyamide granules thus obtained in solid phase in the presence of inert gases until the viscosity has reached the desired level.

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