Process for preparing granular polyarylene sulfides having...

Details Process for preparing granular polyarylene sulfides having... Process for preparing granular polyarylene sulfides having...

C - Chemistry, Metallurgy

08

G

402/344

C08G 75/02 (2006.01)

Patent

CA 2033150

ABSTRACT OF THE DISCLOSURE A process for preparing a granular polyarylene sulfide having a high molecular weight is a one-stage polycondensation process which involves subjecting a dihalogen aromatic compound to polycondensation with a source of sulfur in the presence of a polymerization aid in an organic polar solvent and setting the temperature for polycon- densation to a range from 220 °C to 248 °C for a predetermined period of time prior to completion of polycondensation up to completion of polycondensation. The resulting granular polyarylene sulfide is suitable for molding or forming into sheets, films, fibers and so on, causes less burrs when subjected to injection molding, has a high molecular weight sufficient to create the property of forming a gel, and is easy to handle.

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