Invention Grant
- Patent Title: Production method of cyclic polyarylene sulfide
- Patent Title (中): 环状聚芳硫醚的生产方法
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Application No.: US14353204Application Date: 2012-10-22
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Publication No.: US09150695B2Publication Date: 2015-10-06
- Inventor: Tomoyuki Odashima , Shunsuke Horiuchi , Naoto Kumagai , Koji Yamauchi
- Applicant: TORAY INDUSTRIES, INC.
- Applicant Address: JP Tokyo
- Assignee: TORAY INDUSTRIES, INC.
- Current Assignee: TORAY INDUSTRIES, INC.
- Current Assignee Address: JP Tokyo
- Agency: RatnerPrestia
- Priority: JP2011-232778 20111024; JP2011-262087 20111130; JP2012-037527 20120223; JP2012-120662 20120528; JP2012-122623 20120530
- International Application: PCT/JP2012/006737 WO 20121022
- International Announcement: WO2013/061561 WO 20130502
- Main IPC: C08G75/00
- IPC: C08G75/00 ; C08G75/14 ; C07D341/00 ; C08G75/02

Abstract:
There is provided a production method of a cyclic polyarylene sulfide from a reaction mixture including at least a sulfidizing agent (a), a dihalogenated aromatic compound (b) and an organic polar solvent (c). The production method includes: a process 1 of heating the reaction mixture having an arylene unit of not less than 0.80 mol but less than 1.05 mol per 1 mol of the sulfur content in the reaction mixture; and subsequent to the process 1, a process 2 of further causing the reaction to proceed after addition of the dihalogenated aromatic compound (b) to have the arylene unit of not less than 1.05 mol and not greater than 1.50 mol per 1 mol of the sulfur content in the reaction mixture.
Public/Granted literature
- US20140256907A1 PRODUCTION METHOD OF CYCLIC POLYARYLENE SULFIDE Public/Granted day:2014-09-11
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