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Title:
PROCESS FOR PRODUCTION OF POLYARYLENE SULFIDE HAVING REDUCED TERMINAL HALOGEN GROUP CONTENT
Document Type and Number:
WIPO Patent Application WO/2010/010760
Kind Code:
A1
Abstract:
Disclosed is a process for producing polyarylene sulfide.  The process involves a step of polymerizing a sulfur source and a dihalo aromatic compound in an organic amide solvent, wherein the polymerization step involves a phase separation polymerization step of continuing the polymerization reaction in the presence of a phase-separating agent while maintaining a phase-separated state.  In the process, at a stage in which the rate of conversion of the dihalo aromatic compound reaches 80 to 99% after the initiation of the polymerization reaction and the liquid phase does not get into a phase-separated state yet, a monohalo organic compound is added to the polymerization reaction system in an amount of 0.005 to 20 moles relative to 100 moles of the sulfur source added and is reacted with a polymer produced by the polymerization reaction.  Subsequently, the liquid phase in the polymerization reaction system is converted into a phase-separated state, and the polymerization reaction is continued.

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Inventors:
KONNO AKIHIRO (JP)
TAKAKI KEN-ICHI (JP)
SAKABE HIROSHI (JP)
Application Number:
PCT/JP2009/060598
Publication Date:
January 28, 2010
Filing Date:
June 10, 2009
Export Citation:
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Assignee:
KUREHA CORP (JP)
KONNO AKIHIRO (JP)
TAKAKI KEN-ICHI (JP)
SAKABE HIROSHI (JP)
International Classes:
C08G75/02; C08G75/0213; C08G75/025
Domestic Patent References:
WO2004060972A12004-07-22
Foreign References:
JP2000191785A2000-07-11
JP2003176357A2003-06-24
JPH0710997A1995-01-13
JP2002293936A2002-10-09
JPS55156342A1980-12-05
JPS59219331A1984-12-10
JPS62106929A1987-05-18
JPH05163349A1993-06-29
JPS5212240A1977-01-29
JPS59219332A1984-12-10
US4038263A1977-07-26
JPH01161022A1989-06-23
JPS6333775A1988-02-13
JPH0511128A1993-01-19
Other References:
See also references of EP 2305737A4
Attorney, Agent or Firm:
NISHIKAWA Shigeaki et al. (JP)
Shigeaki Nishikawa (JP)
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