Integrated process for the preparation of substantially...

Details Integrated process for the preparation of substantially... Integrated process for the preparation of substantially...

C - Chemistry, Metallurgy

08

G

402/320, 402/353

C08G 65/40 (2006.01) C08G 61/12 (2006.01) C08G 75/20 (2006.01) C08G 79/04 (2006.01)

Patent

CA 1205599

Abstract Described herein is an integrated process for the preparation of substantially linear high molecular weight thermoplastic polymers derived from aryl polyhalide monomers. Aryl polyhalide monomers are first prepared by the reaction of an alkali metal salt of a phenol compound, e.g., dipotassium salt of bisphenol A, with a dihalobenzenoid compound, e.g., 4,4'-dichlorophenylsulfone, in a liquid phase of an aprotic solvent and an azeotrope former, e.g., toluene. Water is removed from the reaction mass as an azeotrope until substantially anhydrous conditions are attained. The aryl polyhalide monomers are then coupled by contacting the monomers with a catalyst mixture of a nickel compound and a ligand in the presence of a reducing metal, e.g., zinc, and an aprotic solvent under substantially anhydrous conditions to form substantially linear high molecular weight thermoplastic polymers.

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