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Title:
METHOD FOR PRODUCING AROMATIC POLYSULFONE
Document Type and Number:
WIPO Patent Application WO/2018/079531
Kind Code:
A1
Abstract:
This method for producing an aromatic polysulfone produces an aromatic polysulfone through a polycondensation reaction between an aromatic dihalogenosulfone compound and an aromatic dihydroxy compound. The polycondensation reaction is carried out in the coexistence of at least one aromatic terminal capping agent; and if p (mol) is the blending amount of the aromatic dihalogenosulfone compound, q (mol) is the blending amount of the aromatic dihydroxy compound, and r (mol) is the blending amount of the aromatic terminal capping agent, p, q and r satisfy formula (S1) and formula (S2). r/(p - q) < 2 (S1) p > q (S2)

Inventors:
ITO KAZUYUKI (JP)
Application Number:
PCT/JP2017/038307
Publication Date:
May 03, 2018
Filing Date:
October 24, 2017
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C08G65/40; C08G75/20
Domestic Patent References:
WO2017099080A12017-06-15
Foreign References:
JPH0216122A1990-01-19
JPS62502406A1987-09-17
JP2012509375A2012-04-19
JPH04359021A1992-12-11
Other References:
See also references of EP 3533819A4
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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