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:

Marks, Tobin J.; Chen, You-Xian

Issue Date:

Fri Jan 01 00:00:00 EST 1999

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):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J2531/46 - Titanium
B01J2531/48 - Zirconium
B01J2531/49 - Hafnium
B01J31/146 - {of boron}
B01J31/2226 - {Anionic ligands, i.e. the overall ligand carries at least one formal negative charge}
B01J31/2295 - {Cyclic compounds, e.g. cyclopentadienyls}

C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM

C07F17/00 - Metallocenes

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

C08F10/00 - Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
C08F110/02 - Ethene
C08F110/06 - Propene
C08F2500/01 - High molecular weight
C08F2500/03 - Narrow molecular weight distribution
C08F2500/04 - Broad molecular weight distribution
C08F4/65908 - {in combination with an ionising compound other than alumoxane, e.g.
C08F4/65912 - {in combination with an organoaluminium compound}
C08F4/6592 - containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring

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

Y10S526/943 - Polymerization with metallocene catalysts

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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/