Title:
ポリトリメチレンエーテルグリコールの製造方法
Document Type and Number:
Japanese Patent JP2008503486
Kind Code:
A
Abstract:
There is disclosed a process for preparing polytrimethylene ether glycol by acid catalyzed polycondensation, neutralization and contact with filter aid. The process avoids hydrolysis and yet provides product substantially free of catalyst derived end groups.
Inventors:
Sunkara Harry Bab
Parumpi Palaskevi
Parumpi Palaskevi
Application Number:
JP2007516786A
Publication Date:
February 07, 2008
Filing Date:
June 15, 2005
Export Citation:
Assignee:
E.I.DU PONT DE NEMOURS AND COMPANY
International Classes:
C07C41/09; C07C41/03; C07C43/10; C07C43/13; C08G65/46; C07B61/00
Domestic Patent References:
| JP2003517082A | 2003-05-20 | |||
| JP2004182974A | 2004-07-02 | |||
| JP2007501325A | 2007-01-25 | |||
| JP2003517071A | 2003-05-20 |
Attorney, Agent or Firm:
Sadao Kumakura
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Koji Hirayama
Nobuo Ogawa
Atsushi Hakoda
Kenji Asai
Koji Hirayama