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Title:
METHOD OF MANUFACTURING CYCLIC POLYARYLENE SULFIDE
Document Type and Number:
Japanese Patent JP2014125533
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing industrially useful cyclic polyarylene sulfide in high yield.SOLUTION: A method of manufacturing cyclic polyarylene sulfide by heating and reacting a reaction mixture containing at least linear polyarylene sulfide, a sulfidation agent, a dihalogenated aromatic compound and an organic polar solvent includes measuring a concentration of the linear polyarylene sulfide contained in a mixed slurry in a method of recycling the mixed slurry containing the organic polar solvent and the linear polyarylene sulfide obtained by separating the cyclic polyarylene sulfide from a polyarylene sulfide mixture containing the cyclic polyarylene sulfide and a linear polyarylene sulfide obtained by heating and reacting the reaction mixture containing at least linear polyarylene sulfide, a sulfidation agent, a dihalogenated aromatic compound and an organic polar solvent.

Inventors:
SUZUKI JUNYA
TAKEDA KAZUSADA
ISHIBASHI JUNJI
HORIUCHI SHUNSUKE
Application Number:
JP2012282881A
Publication Date:
July 07, 2014
Filing Date:
December 26, 2012
Export Citation:
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Assignee:
TORAY IND INC
International Classes:
C08G75/02; C07D339/00; C07D341/00; C08G75/0209; C08G75/0259; C08G75/0281
Domestic Patent References:
JP2009227952A2009-10-08
JP2004075956A2004-03-11
JP2013032512A2013-02-14
JP2011068885A2011-04-07
JP2009227952A2009-10-08
JP2004075956A2004-03-11
JP2013032512A2013-02-14



 
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