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Title: 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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