Title:
DUAL- OR MULTI-HEADED CHAIN SHUTTLING AGENTS AND THEIR USE FOR THE PREPARATION OF BLOCK COPOLYMERS
Document Type and Number:
WIPO Patent Application WO/2011/016991
Kind Code:
A3
Abstract:
This disclosure relates to olefin polymerization catalysts and compositions, their manufacture, and the production of polyolefins using specific catalyst compositions, including the use of chain-shuttling agents in the olefin polymerization process. Specifically, this disclosure provides for dual-headed and multi-headed chain shuttling agents (CSAs or MSAs) and for their use in preparing blocky copolymers. By controlling the ratio of dual-headed and multi-headed CSA sites to mono-headed CSA sites, a blocky copolymer can be provided having properties such as a narrow molecular weight distribution and/or improved melt properties.
Inventors:
ARRIOLA DANIEL (US)
CLARK THOMAS (US)
FRAZIER KEVIN (US)
KLAMO SARA (US)
TIMMERS FRANCIS (US)
CLARK THOMAS (US)
FRAZIER KEVIN (US)
KLAMO SARA (US)
TIMMERS FRANCIS (US)
Application Number:
PCT/US2010/042605
Publication Date:
June 16, 2011
Filing Date:
July 20, 2010
Export Citation:
Assignee:
DOW GLOBAL TECHNOLOGIES INC (US)
ARRIOLA DANIEL (US)
CLARK THOMAS (US)
FRAZIER KEVIN (US)
KLAMO SARA (US)
TIMMERS FRANCIS (US)
ARRIOLA DANIEL (US)
CLARK THOMAS (US)
FRAZIER KEVIN (US)
KLAMO SARA (US)
TIMMERS FRANCIS (US)
International Classes:
C07F3/02; C08F4/659; C07F3/06; C07F5/02; C07F5/06; C08F10/00
Domestic Patent References:
| WO2007035493A2 | 2007-03-29 |
Other References:
ERDIK, ENDER ET AL: "Reactivities of mixed organozinc and mixed organocopper reagents, Part 2. Selective n-alkyl transfer in tri-n-butylphosphine-catalyzed acylation of n-alkylphenylzincs; an atom economic synthesis of n-alkyl aryl ketones Reactivities of mixed organozinc and mixed organocopper reagents, Part 2. Selecti", TETRAHEDRON LETTERS, vol. 50, no. 13, 2009, pages 1501 - 1503, XP025937000, ISSN: 0040-4039
KIM, YOUNG SEOK ET AL KIM, YOUNG SEOK ET AL: "Homogeneous decomposition mechanisms of diethylzinc by Raman spectroscopy and quantum chemical calculations Homogeneous decomposition mechanisms of diethylzinc by Raman spectroscopy and quantum chemical calculations", JOURNAL OF PHYSICAL CHEMISTRY A, vol. 112, no. 18, 2008, pages 4246 - 4253, XP002609164, ISSN: 1089-5639
DATABASE CA [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; FUJITA, KENICHI ET AL: "Zinc -containing dendrimers , their preparation, and their use as Lewis acids", XP002609165, retrieved from STN Database accession no. 2006:886134
KIM, YOUNG SEOK ET AL KIM, YOUNG SEOK ET AL: "Homogeneous decomposition mechanisms of diethylzinc by Raman spectroscopy and quantum chemical calculations Homogeneous decomposition mechanisms of diethylzinc by Raman spectroscopy and quantum chemical calculations", JOURNAL OF PHYSICAL CHEMISTRY A, vol. 112, no. 18, 2008, pages 4246 - 4253, XP002609164, ISSN: 1089-5639
DATABASE CA [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; FUJITA, KENICHI ET AL: "Zinc -containing dendrimers , their preparation, and their use as Lewis acids", XP002609165, retrieved from STN Database accession no. 2006:886134
Attorney, Agent or Firm:
CARNAHAN, Jennifer (Midland, MI, US)
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