EP 1311583 A1 20030521 - IMPROVED METHOD FOR THE PRODUCTION OF POLYTETRAHYDROFURAN WITH LOW COLOUR INDEX
Title (en)
IMPROVED METHOD FOR THE PRODUCTION OF POLYTETRAHYDROFURAN WITH LOW COLOUR INDEX
Title (de)
VERBESSERTES VERFAHREN ZUR HERSTELLUNG VON POLYTETRAHYDROFURAN MIT NIEDRIGER FARBZAHL
Title (fr)
PROCEDE AMELIORE POUR PRODUIRE DU POLYTETRAHYDROFURANE A FAIBLE INDICE DE COLORATION
Publication
Application
Priority
- DE 10040091 A 20000816
- EP 0108525 W 20010724
Abstract (en)
[origin: WO0214405A1] The invention relates to a method for the production of polytetrahydrofuran, tetrahydrofuran copolymers, diesters or monoesters of the above polymers with low colour index. The invention is characterised in that the polymer, obtained by cationic polymerisation of tetrahydrofuran is hydrogenated in the presence of a macroporous, supported, heterogeneous catalyst, the active metal of which is at least one metal of the VII to X transition group of the periodic table.
IPC 1-7
IPC 8 full level
C08G 65/30 (2006.01); C08G 65/20 (2006.01); C08G 65/322 (2006.01)
CPC (source: EP KR US)
C08G 65/20 (2013.01 - EP US); C08G 65/32 (2013.01 - KR); C08G 65/322 (2013.01 - EP US)
Citation (search report)
See references of WO 0214405A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0214405 A1 20020221; AU 8201301 A 20020225; CN 1446241 A 20031001; DE 10040091 A1 20020228; EP 1311583 A1 20030521; JP 2004506763 A 20040304; KR 20030031155 A 20030418; MY 136238 A 20080829; US 2004024172 A1 20040205; US 6852869 B2 20050208
DOCDB simple family (application)
EP 0108525 W 20010724; AU 8201301 A 20010724; CN 01814129 A 20010724; DE 10040091 A 20000816; EP 01960543 A 20010724; JP 2002519539 A 20010724; KR 20037002245 A 20030215; MY PI20013802 A 20010814; US 34398203 A 20030206