US 6,982,312 B2
Process for producing polyarylene sulfide
Minoru Senga, Chiba (Japan); Masaya Okamoto, Ibaraki (Japan); and Mikiya Hayashi, Chiba (Japan)
Assigned to Idemitsu Kosan Co., Ltd., Tokyo (Japan); and Petroleum Energy Center, A Jurdical Incorporated Foundation, Tokyo (Japan)
Appl. No. 10/471,663
PCT Filed Mar. 04, 2002, PCT No. PCT/JP02/01958
§ 371(c)(1), (2), (4) Date Sep. 11, 2003,
PCT Pub. No. WO02/072650, PCT Pub. Date Sep. 19, 2002.
Claims priority of application No. 2001-68495 (JP), filed on Mar. 12, 2001.
Prior Publication US 2004/0092706 A1, May 13, 2004
Int. Cl. C08G 75/00 (2006.01)
U.S. Cl. 528—373 10 Claims
 
1. A process for continuously producing a polyarylene sulfide which comprises
(a) batch polymerizing a sulfur source with a dihalogenated aromatic compound in the presence of an aprotic organic solvent to produce a polymerization product,
(b) feeding a phase separation agent and an aprotic organic solvent into a reactor, and
(c) feeding the polymerization product of (a) to the reactor in (b) after the phase separation agent and aprotic solvent, such that a spherical polymer phase is formed as a dispersed phase, wherein polyarylene sulfide is continuously produced in the reactor from the reaction of the dihalogenated aromatic compound and the sulfur source in the presence of the aprotic organic solvent.