Title:
【発明の名称】ポリテトラヒドロフラン及びポリテトラヒドロフラン誘導体の製法
Document Type and Number:
Japanese Patent JP2001501666
Kind Code:
A
Abstract:
PCT No. PCT/EP97/05204 Sec. 371 Date Apr. 1, 1999 Sec. 102(e) Date Apr. 1, 1999 PCT Filed Sep. 23, 1997 PCT Pub. No. WO98/15589 PCT Pub. Date Apr. 16, 1998Polytetrahydrofuran, copolymers of tetrahydrofuran and 2-butyne-1,4-diol, diesters of these polymers with C2-C20-monocarboxylic acids or monoesters of these polymers with C1-C10-monocarboxylic acids are prepared by polymerization of tetrahydrofuran in the presence of one of the telogens water, 1,4-butanediol, 2-butyne-1,4-diol, polytetrahydrofuran having a molecular weight of from 200 to 700 Dalton, a C1-C10-monocarboxylic acid or an anhydride of a C2-C20-monocarboxylic acid or a mixture of these telogens over a heterogeneous supported catalyst which comprises a catalytically active amount of an oxygen-containing molybdenum and/or tungsten compound on an oxidic support material and which has been calcined at from 5OO DEG C. to 1OOO DEG C. after application of the precursor compounds of the oxygen-containing molybdenum and/or tungsten compounds onto the support material precursor, wherein the catalyst is activated by treatment with a reducing agent before it is used as a polymerization catalyst.
Inventors:
Christoph Siegwald
Carsten error
Liner becker
Claus-Diter Pritzko
Rolf Fisher
Frank Stein
Ulrich Muller
Michael hesse
Carsten error
Liner becker
Claus-Diter Pritzko
Rolf Fisher
Frank Stein
Ulrich Muller
Michael hesse
Application Number:
JP51712498A
Publication Date:
February 06, 2001
Filing Date:
September 23, 1997
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
B01J23/24; C08G18/48; C08G65/20; C08G65/10; C08G65/28; (IPC1-7): C08G65/10; C08G65/20
Attorney, Agent or Firm:
Toshio Yano (3 outside)