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Title: Phenolate constrained geometry polymerization catalyst and method for preparing

Abstract

The subject invention involves a method of preparing and the constrained geometry catalyst thereby prepared of the general formula Ar'R4(O)Ar"R'.sub.4 M(CH.sub.2 Ph).sub.2 where Ar' is a phenyl or naphthyl group; Ar" is a cyclopentadienyl or indenyl group, R and R' are H or alkyl substituents (C.ltoreq.10) and M is Ti, Zr or Hf. The synthetic method involves a simple alkane elimination approach which permits a "one-pot" procedure. The catalyst, when combined with a cocatalyst such as Pb.sub.3 C.sup.+ B(Ar.sub.3.sup.F).sub.4 BAr.sub.3.sup.F or methyl alumoxane where Ar.sup.F is a fluoroaryl group, is an effective catalyst for the polymerization of .alpha.-olefins such as ethylene, propylene and styrene.

Inventors:
;
Issue Date:
Research Org.:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
872080
Patent Number(s):
5856258
Application Number:
08/950,912
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
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
DOE Contract Number:  
FG02-86ER13511
Resource Type:
Patent
Resource Relation:
Patent File Date: 1997 Oct 15
Country of Publication:
United States
Language:
English
Subject:
phenolate; constrained; geometry; polymerization; catalyst; method; preparing; subject; involves; prepared; formula; r4; ph; phenyl; naphthyl; cyclopentadienyl; indenyl; alkyl; substituents; ltoreq; 10; zr; hf; synthetic; simple; alkane; elimination; approach; permits; one-pot; procedure; combined; cocatalyst; pb; bar; methyl; alumoxane; fluoroaryl; effective; alpha; -olefins; ethylene; propylene; styrene; method involves; polymerization catalyst; method involve; effective catalyst; constrained geometry; /502/526/999/

Citation Formats

Marks, Tobin J., and Chen, You-Xian. Phenolate constrained geometry polymerization catalyst and method for preparing. United States: N. p., 1999. Web.
Marks, Tobin J., & Chen, You-Xian. Phenolate constrained geometry polymerization catalyst and method for preparing. United States.
Marks, Tobin J., and Chen, You-Xian. Fri . "Phenolate constrained geometry polymerization catalyst and method for preparing". United States. https://www.osti.gov/servlets/purl/872080.
@article{osti_872080,
title = {Phenolate constrained geometry polymerization catalyst and method for preparing},
author = {Marks, Tobin J. and Chen, You-Xian},
abstractNote = {The subject invention involves a method of preparing and the constrained geometry catalyst thereby prepared of the general formula Ar'R4(O)Ar"R'.sub.4 M(CH.sub.2 Ph).sub.2 where Ar' is a phenyl or naphthyl group; Ar" is a cyclopentadienyl or indenyl group, R and R' are H or alkyl substituents (C.ltoreq.10) and M is Ti, Zr or Hf. The synthetic method involves a simple alkane elimination approach which permits a "one-pot" procedure. The catalyst, when combined with a cocatalyst such as Pb.sub.3 C.sup.+ B(Ar.sub.3.sup.F).sub.4 BAr.sub.3.sup.F or methyl alumoxane where Ar.sup.F is a fluoroaryl group, is an effective catalyst for the polymerization of .alpha.-olefins such as ethylene, propylene and styrene.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

Bifunctional Cyclopentadienyl Ligands in Organotransition Metal Chemistry
journal, August 1994


Synthesis and Characterization of Monocyclopentadienyl Titanium and Zirconium Complexes Bearing a Chelating (Chiral) Ether Side Chain on the Cp Ring
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Stereoselective Synthesis of Chiral Zirconocenes from Doubly Substituted, Donor Functionalized Cyclopentadienes via Helical Chelate Complexes
journal, November 1995


Synthesis and properties of some titanium and zirconium benzyl derivatives
journal, February 1971


Cyclopentadienyl compounds with nitrogen donors in the side-chain
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