Title:
【発明の名称】芳香族ポリエーテルの精製法
Document Type and Number:
Japanese Patent JP2003510387
Kind Code:
A
Abstract:
Aromatic polyethers are prepared by displacement polymerization reaction in the presence of a water-immiscible solvent with boiling point at atmospheric pressure of greater than 110° C. and a density ratio to water of greater than 1.1:1 at 20-25° C. The polyethers are purified by processes comprising aqueous extraction, or filtration, or a combination thereof.
Inventors:
Johnson, Norman Enoch
Ayala, Paul Edoard
Favi, Thomas Joseph
Amy Rene, Freshel
Woodruff, David Winfield
Phelps, Peter David
Kyle Sam, Ganesh
Hauston, Paul Edward
Shanklin, Elliott West
Ayala, Paul Edoard
Favi, Thomas Joseph
Amy Rene, Freshel
Woodruff, David Winfield
Phelps, Peter David
Kyle Sam, Ganesh
Hauston, Paul Edward
Shanklin, Elliott West
Application Number:
JP2001525256A
Publication Date:
March 18, 2003
Filing Date:
September 18, 2000
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
B01D11/04; C08G65/40; C08G65/46; C08G65/48; B01D15/00; C08G73/10; C08G73/12; C08G75/23; (IPC1-7): C08G65/46; B01D11/04; B01D15/00; C08G65/40
Attorney, Agent or Firm:
Kenichi Matsumoto