Patent ID: 6316592
Filing Date: 2001-11-13
Classification: C08F,C08G

Abstract:
A method for separating a soluble polymer resin from a solution slurry, which contains a solid phase of said polymer resin as particulates, said method comprising:adding to a solution slurry which contains at least one soluble polymer resin selected from the group consisting of polycarbonates, polystyrenes, rubber modified polystyrenes, polyphenylene ethers, polyetherimides, polyamides, and polyesters and a solid phase of said polymer resin as particulates, a linear or chain-branched polymeric precipitation aid which absorbs onto the surface of the polymer resin particulates in said solution slurry, wherein said precipitation aid is a suitable blend component for formulations of said polymer resin; andadding the solution slurry, which contains said precipitation aid, to a non-solvent for the soluble polymer resin to precipitate the soluble polymer resin within said solution slurry.