C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 75/16 (2006.01) C08G 75/02 (2006.01)
Patent
CA 2104557
ABSTRACT OF THE DISCLOSURE A method for removing oligomers and non-polymeric impunities from poly(arylene sulfide) polymers is provided in which a poly(arylene sulfide) polymer associated with oligomers and non-polymeric impunities is contacted with a solvent at a sufficient temperature to substantially dissolve the polymer, oligomers and impurities, then the solution is cooled to a temperature at which the poly(arylene sulfide) precipitates while oligomers and impurities remain in solution, then the precipitated polymer is separated from the solution containing the oligomers and impurities. A polymer product produced by this method is also disclosed.
Allison John B.
Fahey Darryl R.
Gharfeh Samir G.
Osler Hoskin & Harcourt Llp
Phillips Petroleum Company
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