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Machine translation
1. (WO2004007581) COUPLED STYRENIC BLOCK COPOLYMERS AND PROCESS FOR PREPARING SAME
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/007581    International Application No.:    PCT/US2003/021814
Publication Date: 22.01.2004 International Filing Date: 11.07.2003
Chapter 2 Demand Filed:    05.02.2004    
IPC:
C08F 8/04 (2006.01), C08F 297/04 (2006.01), C08L 53/02 (2006.01), C08L 95/00 (2006.01)
Applicants: KRATON POLYMERS RESEARCH B.V. [NL/NL]; Badhuisweg 3, NL-1030 BH Amsterdam (NL).
BENING, Robert [US/US]; (US).
ATWOOD, Harvey, Emerson [US/US]; (US).
VAN DIJK, Marinus Pieter [NL/NL]; (NL).
ROS, Adriana Maria Petronella [NL/NL]; (NL).
MOORE, Barry [US/US]; (US).
WILLIS, Carl [US/US]; (US).
VAN DIJK, Nikolaas Jan [NL/NL]; (NL)
Inventors: BENING, Robert; (US).
ATWOOD, Harvey, Emerson; (US).
VAN DIJK, Marinus Pieter; (NL).
ROS, Adriana Maria Petronella; (NL).
MOORE, Barry; (US).
WILLIS, Carl; (US).
VAN DIJK, Nikolaas Jan; (NL)
Common
Representative:
VANCE, Dean, F.; Kraton Polymers U.S. LLC, 3333 Highway 6 South, Rm. CA-108, Houston, tx 77082 (US)
Priority Data:
60/395,139 11.07.2002 US
Title (EN) COUPLED STYRENIC BLOCK COPOLYMERS AND PROCESS FOR PREPARING SAME
(FR) COPOLYMERES SEQUENCES DE STYRENE COUPLES ET PROCEDE DE PREPARATION
Abstract: front page image
(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.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, OM, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)