Homogeneous catalysts for stereoregular olefin polymerization
Abstract
The synthesis, and use as precatalysts of chiral organozirconium complexes for olefin polymerization are disclosed, having the structure (C.sub.5 R'.sub.4-x R*.sub.x) A (C.sub.5 R".sub.4-y R"'.sub.y) M Q.sub.p, where x and y represent the number of unsubstituted locations on the cyclopentadienyl ring; R', R", R"', and R* represent substituted and unsubstituted alkyl groups having 1-30 carbon atoms and R* is a chiral ligand; A is a fragment containing a Group 13, 14, 15, or 16 element of the Periodic Table; M is a Group 3, 4, or 5 metal of the Periodic Table; and Q is a hydrocarbyl radical, or halogen radical, with 3.ltoreq.p.ltoreq.o. Related complexes may be prepared by alkylation of the corresponding dichorides. In the presence of methylalumoxane or triarylborane cocatalysts, these complexes form "cation-like" species which are highly active for olefin polymerization. In combination with a Lewis acid cocatalyst, propylene or other .alpha.-olefin polymerization can be effected with very high efficiency and isospecificity.
- Inventors:
- Issue Date:
- Research Org.:
- Northwestern Univ., Evanston, IL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 870095
- Patent Number(s):
- 5455317
- Application Number:
- 08/373,869
- Assignee:
- Northwestern University (Evanston, IL)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- FG02-86ER13511
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1995 Jan 17
- Country of Publication:
- United States
- Language:
- English
- Subject:
- homogeneous; catalysts; stereoregular; olefin; polymerization; synthesis; precatalysts; chiral; organozirconium; complexes; disclosed; structure; 4-x; 4-y; represent; unsubstituted; locations; cyclopentadienyl; substituted; alkyl; 1-30; carbon; atoms; ligand; fragment; containing; 13; 14; 15; 16; element; periodic; table; metal; hydrocarbyl; radical; halogen; ltoreq; related; prepared; alkylation; corresponding; dichorides; presence; methylalumoxane; triarylborane; cocatalysts; form; cation-like; species; highly; active; combination; lewis; acid; cocatalyst; propylene; alpha; -olefin; effected; efficiency; isospecificity; unsubstituted alkyl; homogeneous catalyst; olefin polymerization; lewis acid; carbon atoms; periodic table; carbon atom; complexes form; highly active; chiral organozirconium; organozirconium complexes; stereoregular olefin; olefin polymer; homogeneous catalysts; substituted alkyl; /526/
Citation Formats
Marks, Tobin J., Eisen, Moris S., and Giardello, Michael A. Homogeneous catalysts for stereoregular olefin polymerization. United States: N. p., 1995.
Web.
Marks, Tobin J., Eisen, Moris S., & Giardello, Michael A. Homogeneous catalysts for stereoregular olefin polymerization. United States.
Marks, Tobin J., Eisen, Moris S., and Giardello, Michael A. Sun .
"Homogeneous catalysts for stereoregular olefin polymerization". United States. https://www.osti.gov/servlets/purl/870095.
@article{osti_870095,
title = {Homogeneous catalysts for stereoregular olefin polymerization},
author = {Marks, Tobin J. and Eisen, Moris S. and Giardello, Michael A.},
abstractNote = {The synthesis, and use as precatalysts of chiral organozirconium complexes for olefin polymerization are disclosed, having the structure (C.sub.5 R'.sub.4-x R*.sub.x) A (C.sub.5 R".sub.4-y R"'.sub.y) M Q.sub.p, where x and y represent the number of unsubstituted locations on the cyclopentadienyl ring; R', R", R"', and R* represent substituted and unsubstituted alkyl groups having 1-30 carbon atoms and R* is a chiral ligand; A is a fragment containing a Group 13, 14, 15, or 16 element of the Periodic Table; M is a Group 3, 4, or 5 metal of the Periodic Table; and Q is a hydrocarbyl radical, or halogen radical, with 3.ltoreq.p.ltoreq.o. Related complexes may be prepared by alkylation of the corresponding dichorides. In the presence of methylalumoxane or triarylborane cocatalysts, these complexes form "cation-like" species which are highly active for olefin polymerization. In combination with a Lewis acid cocatalyst, propylene or other .alpha.-olefin polymerization can be effected with very high efficiency and isospecificity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}
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