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1. EP1532185 - COUPLED STYRENIC BLOCK COPOLYMERS AND PROCESS FOR PREPARING SAME

Office European Patent Office
Application Number 03764565
Application Date 11.07.2003
Publication Number 1532185
Publication Date 25.05.2005
Publication Kind B1
IPC
C08F 297/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
297Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
02using a catalyst of the anionic type
04polymerising vinyl aromatic monomers and conjugated dienes
C08F 8/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
8Chemical modification by after-treatment
04Reduction, e.g. hydrogenation
C08L 53/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
53Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
02of vinyl aromatic monomers and conjugated dienes
C08L 95/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
95Compositions of bituminous materials, e.g. asphalt, tar or pitch
CPC
C08F 8/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
8Chemical modification by after-treatment
04Reduction, e.g. hydrogenation
C08F 297/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
297Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
02using a catalyst of the anionic type
04polymerising vinyl aromatic monomers and conjugated dienes
C08F 297/044
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
297Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
02using a catalyst of the anionic type
04polymerising vinyl aromatic monomers and conjugated dienes
044using a coupling agent
C08L 53/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
53Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
02of vinyl-aromatic monomers and conjugated dienes
C08L 53/025
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
53Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
02of vinyl-aromatic monomers and conjugated dienes
025modified
C08L 95/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
95Compositions of bituminous materials, e.g. asphalt, tar, pitch
Applicants KRATON POLYMERS RES BV
Inventors BENING ROBERT
ATWOOD HARVEY EMERSON
VAN DIJK MARINUS PIETER
ROS ADRIANA MARIA PETRONELLA
MOORE BARRY
WILLIS CARL
VAN DIJK NIKOLAAS JAN
Designated States
Priority Data 0321814 11.07.2003 US
39513902 11.07.2002 US
Title
(DE) GEKOPPELTE STYROLBLOCKCOPOLYMERE UND HERSTELLUNGSVERFAHREN DAFÜR
(EN) COUPLED STYRENIC BLOCK COPOLYMERS AND PROCESS FOR PREPARING SAME
(FR) COPOLYMERES SEQUENCES DE STYRENE COUPLES ET PROCEDE DE PREPARATION
Abstract
(EN)
Disclosed is an improvement to a process for preparing coupled styrenic block copolymers wherein adding from about 0.01 to about 1.5 equivalents of a metal alkyl compound per equivalent of living polymer chain ends to the cement, during or after polymerization, improves coupling efficiencies. The resultant radial styrenic block copolymers have reduced amounts of 5+ arm oligomers which can be very desirable is certain applications, such as the modification of bitumen.

(FR)
L'invention concerne un procédé de préparation amélioré de copolymères séquencés de styrène couplés dans lequel l'ajout de ciment entre environ 0,01 et environ 1,5 équivalents d'un composant d'alkyle métallique par équivalent d'extrémités de chaînes polymères vivantes, pendant ou après la polymérisation, améliore le rendement de couplage. Les copolymères séquencés de styrène radiaux présentent des taux réduits d'oligomères à bras 5+, ce qui peut représenter un grand avantage dans certaines applications, tels que la modification du bitume.