EP 0991694 A1 20000412 - METHOD FOR PRODUCING POLYTETRAHYDROFURAN
Title (en)
METHOD FOR PRODUCING POLYTETRAHYDROFURAN
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYTETRAHYDROFURAN
Title (fr)
PROCEDE DE FABRICATION DE POLYTETRAHYDROFURANNE
Publication
Application
Priority
- DE 19726507 A 19970623
- EP 9803519 W 19980610
Abstract (en)
[origin: DE19726507A1] The invention relates to a method for producing polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers by polymerization of tetrahydrofuran in the presence of at least one telogene and/or comonomer on a sulfate-containing heterogeneous supported catalyst. A sulfate-containing heterogeneous supported catalyst is used containing at least one metal sulfate, metal hydrogen sulfate, metal oxide sulfate or mixtures thereof.
IPC 1-7
IPC 8 full level
B01J 27/053 (2006.01); C08G 65/10 (2006.01); C08G 65/20 (2006.01); C08G 65/26 (2006.01)
CPC (source: EP KR US)
B01J 27/053 (2013.01 - EP KR US); C08G 65/10 (2013.01 - KR); C08G 65/20 (2013.01 - EP KR US); C08G 65/2693 (2013.01 - EP KR US); Y02P 20/52 (2015.11 - KR)
Citation (search report)
See references of WO 9858982A1
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
DE 19726507 A1 19981224; CA 2294028 A1 19981230; CN 1261381 A 20000726; EP 0991694 A1 20000412; JP 2002504950 A 20020212; KR 20010014083 A 20010226; TW 460504 B 20011021; US 6124368 A 20000926; WO 9858982 A1 19981230
DOCDB simple family (application)
DE 19726507 A 19970623; CA 2294028 A 19980610; CN 98806530 A 19980610; EP 9803519 W 19980610; EP 98933602 A 19980610; JP 50369199 A 19980610; KR 19997012119 A 19980610; TW 87109507 A 19980615; US 44570099 A 19991213