C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
18/12, 402/6, 40
C08J 7/02 (2006.01) B01D 67/00 (2006.01) B01D 71/52 (2006.01) C08L 61/00 (2006.01) C08L 81/04 (2006.01)
Patent
CA 2003777
ABSTRACT The present invention relates to a process for the solvent-induced crystallization of amorphous poly(etheretherketone)-type polymer to produce an article, which process comprises contacting a preformed article of a polymer comprising amorphous poly(etheretherketone)-type polymer with at least one organic compound its liquid state which comprises atoms of carbon and hydrogen and has a molecular weight of between 160 and 320 daltons at a temperature of between 85°C and 145°C for a time effective to crystallize the poly(etheretherketone)-type polymer. This process requires a much lower temperature than those necessary to prepare crystallized polymers by thermal annealing procedures. The polymer are useful in dialysis and ultrafiltration. The polymer article having a trace of the organic compound is also described. 35,918-F
Beck Henry N.
Nowak Robert M.
Smart & Biggar
The Dow Chemical Company
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