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1. IN158/CHENP/2009 - METHOD FOR THE PRODUCTION OF POLYTETRAHYDROFURAN OR TETRAHYDROFURAN COPOLYMERS

Office India
Application Number 158/CHENP/2009
Application Date 09.01.2009
Publication Number 158/CHENP/2009
Publication Date 29.05.2009
Grant Number 279068
Grant Date 13.01.2017
Publication Kind B
IPC
C08G 65/20
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
65Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
02from cyclic ethers by opening of the heterocyclic ring
04from cyclic ethers only
06Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
16Cyclic ethers having four or more ring atoms
20Tetrahydrofuran
Applicants BASF SE
Inventors WABNITZ, TOBIAS
HATSCHER, STEPHAN
KASHAMMER, STEFAN
PINKOS ROLF
Priority Data 102006027233.1 09.06.2006 DE
Title
(EN) METHOD FOR THE PRODUCTION OF POLYTETRAHYDROFURAN OR TETRAHYDROFURAN COPOLYMERS
Abstract
(EN)
Method for the production of polytetrahydrofuran or tetrahydrofuran copolymersAbstractThe present invention relates to a process for preparing polytetrahydrofuran or tetrahydrofuran copolymers by polymerization of tetrahydrofuran in the presence of a telogen and/or a comonomer over a fixed bed of an acid catalyst, in which the temperature of the polymerization mixture increases in the direction of flow through the catalyst bed.