Title:
環状エステルオリゴマーの製造
Document Type and Number:
Japanese Patent JP2004536161
Kind Code:
A
Abstract:
Cyclic ester oligomers (CEOs) are manufactured from linear polyesters or their precursors by a continuous reactive extraction in which the linear polyesters are converted to the CEOs and the CEOs selectively removed from the mixture by extraction with a fluid. The fluid may be a liquid or a gas. The CEOs prodcued are useful as monomers, for example in a reaction injection molding process to rapidly form polyesters from low viscosity liquids.
Inventors:
Edward G. Blue Gel
Application Number:
JP2002568004A
Publication Date:
December 02, 2004
Filing Date:
February 28, 2002
Export Citation:
Assignee:
E.I.DU PONT DE NEMOURS AND COMPANY
International Classes:
B01D3/00; B01D3/14; C08G63/78; C08G63/81; C08G63/91; (IPC1-7): C08G63/91; B01D3/00; B01D3/14
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe