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1. EP2032626 - METHOD FOR THE PRODUCTION OF POLYTETRAHYDROFURANE OR TETRAHYDROFURANE COPOLYMERS

Office European Patent Office
Application Number 07729532
Application Date 25.05.2007
Publication Number 2032626
Publication Date 11.03.2009
Publication Kind B1
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
CPC
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 UNSATURATED CARBON-TO-CARBON 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
KAESHAMMER STEFAN
PINKOS ROLF
Title
(DE) VERFAHREN ZUR HERSTELLUNG VON POLYTETRAHYDROFURAN ODER TETRAHYDROFURAN-COPOLYMEREN
(EN) METHOD FOR THE PRODUCTION OF POLYTETRAHYDROFURANE OR TETRAHYDROFURANE COPOLYMERS
(FR) PROCÉDÉ DE PRÉPARATION DE POLYTÉTRAHYDROFURANNE OU DE COPOLYMÈRES DE TÉTRAHYDROFURANNE
Abstract
(DE)
Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung von Polytetrahydrofuran oder Tetrahydrofuran-Copolymeren durch Polymerisation von Tetrahydrofuran, in Gegenwart eines Telogens und/oder eines Comonomers an einem sauren Festbett-Katalysator, bei dem die Temperatur der Polymerisationsmischung in Durchflussrichtung des Katalysatorbetts ansteigt.

(EN)
The subject matter of the present invention is a method for the production of polytetrahydrofurane or tetrahydrofurane copolymers by means of the polymerization of tetrahydrofurane, in the presence of a telogen and/or a comonomer, on an acidic fixed-bed catalyst, in which the temperature of the polymerization mixture increases in the flow direction of the catalyst bed.

(FR)
L'objet de la présente invention est un procédé de préparation de polytétrahydrofuranne ou de copolymères de tétrahydrofuranne par polymérisation du tétrahydrofuranne, en présence d'un télogène et/ou d'un comonomère sur un catalyseur acide sur lit fixe, dans lequel la température du mélange de polymérisation augmente en direction de l'écoulement du lit de catalyseur.