Title:
PROCESS FOR PREPARING AROMATIC POLYETHERSULPHONE
Document Type and Number:
Japanese Patent JP2019143159
Kind Code:
A
Abstract:
To provide a process for preparing an aromatic polyethersulphone that has a high molecular weight and suppresses discoloration, and a polyether sulfone obtained by the method.SOLUTION: The process for preparing aromatic polyethersulphones by reaction of a dichlorodiphenyl sulphone component with a bisphenol component as monomers, in the presence of alkali metal carbonate, in a melted state, in the absence of solvents or diluents, is characterized in that the reaction is carried out in a mixing kneader which is operated with a shear rate in the range from 5 to 500 s.SELECTED DRAWING: Figure 1
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Inventors:
FAISSAL-ALI EL-TOUFAILI
ACHIM STAMMER
SIMON GRAMLICH
ANGELA ULZHOEFER
ACHIM STAMMER
SIMON GRAMLICH
ANGELA ULZHOEFER
Application Number:
JP2019087508A
Publication Date:
August 29, 2019
Filing Date:
May 07, 2019
Export Citation:
Assignee:
BASF SE
International Classes:
C08G65/40
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Morita Taku
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima
Morita Taku
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima