Title:
ポリテトラヒドロフランを製造するための改善された方法
Document Type and Number:
Japanese Patent JP4188825
Kind Code:
B2
Abstract:
In a process for the single-stage preparation of polytetrahydrofuran and/or tetrahydrofuran copolymers having a mean molecular weight of from 650 to 5000 dalton by polymerization of tetrahydrofuran over an acid catalyst in the presence of at least one telogen and/or comonomer, the telogen and/or comonomer is added at at least two addition points in different segments of the polymerization apparatus.
Inventors:
Ulrich Steinbrenner
Martin Haopner
Archim Gerstrauer
Thomas Domsuke
Christoph Siegwald
Stephan case hummer
Martin Haopner
Archim Gerstrauer
Thomas Domsuke
Christoph Siegwald
Stephan case hummer
Application Number:
JP2003519134A
Publication Date:
December 03, 2008
Filing Date:
July 26, 2002
Export Citation:
Assignee:
BASF SE
International Classes:
C08G65/20; C08G65/26
Domestic Patent References:
| JP11158263A | ||||
| JP6016806A | ||||
| JP11502548A |
Foreign References:
| WO1998040414A1 |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel