Patent ID: 6407202
Filing Date: 2002-06-18
Classification: C08G

Abstract:
A method for making a polymer, comprising:a. mixing a polymer precursor with a catalyst to form a reaction mixture; b. adding at least one polar solution to the reaction mixture to form a first at least two phase mixture, wherein one phase of said first two phase mixture is a first polymer phase; c. liquid/liquid centrifuging said first at least two phase mixture to separate the phases; d. removing said first polymer phase from said first at least two phase mixture; e. adding water to said first polymer phase to form a second at least two phase mixture, where one phase of said second two phase mixture is a second polymer phase; f. separating said second polymer phase from said second at least two phase mixture. g. heating said second polymer phase at a first pressure; h. introducing said second polymer phase to a vessel, wherein said vessel is at ambient temperature or cooled; i. flashing said heated polymer phase to a second pressure lower than said first pressure; j. introducing said flashed polymer phase to a devolatizing extruder; and k. extruding said polymer phase to isolate the polymer.