Method of continuously cleansing polyarylene sulfide

Details Method of continuously cleansing polyarylene sulfide Method of continuously cleansing polyarylene sulfide

2006-08-22

2006-08-22

Boykin, Terressa (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

C264S176100, C264S219000, C525S185000, C525S539000, C528S480000

Reexamination Certificate

active

07094867

ABSTRACT:
A polymerizate slurry obtained through a reaction of an alkali sulfide source and an aromatic dihalide compound in an organic polar solvent and comprising polyarylene sulfide particles, a by-produced alkali metal salt and the polar organic solvent, is continuously contacted countercurrently with a washing liquid, thereby continuously and efficiently recovering washed polyarylene sulfide particles. Furthermore, the by-produced alkali metal salt is removed, and the polar organic solvent is recovered, efficiently.

REFERENCES:
patent: 4110401 (1978-08-01), Hoover et al.
patent: 4163837 (1979-08-01), Rush
patent: 4639507 (1987-01-01), Alewelt et al.
patent: 5166446 (1992-11-01), Barentsen et al.
patent: 5316223 (1994-05-01), Lahoda et al.
patent: 5814210 (1998-09-01), Yoon et al.
patent: 6331608 (2001-12-01), Vidaurri et al.
patent: 6734282 (2004-05-01), Wagener et al.
patent: 41 02 745 (1992-08-01), None
patent: 0 101 907 (1984-03-01), None
patent: 2-102228 (1990-04-01), None
patent: 3-86287 (1991-04-01), None
patent: 4-139215 (1992-05-01), None
patent: 00/61659 (2000-10-01), None
patent: 01/70852 (2001-09-01), None

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