PRODUCTION OF AROMATIC SULFIDE/KETONE POLYMERS

摘要

A polymerization process is provided for the production of high molecular weight aromatic sulfide/ketone polymer from at least one dihaloaromatic ketone, at least one alkali metal sulfide, at least one polar organic compound and water wherein the polymerization reaction is conducted in two distinct steps separated by an intermediate step of removal of at least a portion of the water.