Phillips Petroleum Company

Other

Saudi Basic Industries Corporation

Sabic Basic Industries Corporation

Saudi Basic Industires Corporation

Chevron Phillips Chemical Company LP

Syriac J Palackal

M Bruce Welch

Helmut G Alt

Rolf L Geerts

Konstantinos Patsidis

Bernd Peifer

Gil R Hawley

Max P McDaniel

Paul D Smith

Eric T Hsieh

Ted M Pettijohn

Darryl R Fahey

Bryan E Hauger

David W Dockter

Peter Schertl

David C Rohlfing

Jay Janzen

Harold R Deck

Ashish M Sukhadia

Gary L Glass

Michael Schmid

William R Coutant

William M Whitte

Tara G Hill

Alexander K&ouml;ppl

Peter P Chu

Michael D Jensen

Paul J DesLauriers

George A Moczygemba

Iqbal Ahmed

Jim D Byers

Akhlaq A Moman

Orass M Hamed

Kiplin D Cowan

Jianxin Kuang

Roland Zenk

Robert M Infield

Louis Moore, Jr

Elizabeth Ann Benham

Joel L Martin

John D Hottovy

Wei Xu

Kathy S Collins

Anthony P Eaton

Christopher E Wittner

Nicolaas Hendrika Friederichs

Kenneth Farmer

Atieh Abu-Raqabah

Carleton E Stouffer

Mansour Izzat Taftaf

Muhammad Atiqullah

Michael Jung

Faizur Rahman

Alexander Koppl

John Ledford

Navin Nallaveerapan

Muhammad A Al-Saleh

Mohammed F Al-Anazi

Bing Wang

Muhammad Naseem Akhtar

Alexander Köppl

Muhammad Ibrahim

Javaid H Khan

Atieh Abu Raqabah

Atieh Abu-Ruqabah

Maneet Muktibodh

Srikant Hazra

Antoni Jurkiewicz

H G Alt

Max P Mcdaniel

Louis Moore

Kiplan D Cowan

Paul J Des Lauriers

The present invention relates to a supported catalyst composition for polymerization of olefins comprising at least two catalytic components; and a polymerization process using that catalyst composition; and a method for its preparation.

Catalyst composition for polymerization of olefins, polymerization process using the same, and method for its preparation

The invention is directed to a process for the preparation of a silylchromate catalyst comprising the steps of: The invention also relates to a process for the production of an ethylene homopolymer or an ethylene copolymer in the presence of the silylchromate catalyst obtained with the process according to the invention.

Process for the preparation of a silylchromate catalyst

Fluorenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition, polymers resulting from such polymerizations are disclosed.

Organometallic fluorenyl compounds, preparations, and use

Metallocene having two cyclic dienyl groups connected by a single carbon having an aryl substituent and a terminally unsaturated hydrocarbyl substituent, olefin polymerization catalyst systems prepared therefrom, and the use of such catalyst systems are disclosed.

Metallocenes, polymerization catalyst systems, their preparation, and use

The present invention relates to a supported catalyst system for olefin polymerization which comprises at least one metallocene component and a support of an inorganic oxide of silica, aluminum or a polymer containing hydroxyl groups. The support is modified with an organogermane and/or organotin compound. The inventive catalyst system produces minimal reactor fouling, has excellent productivity and good hydrogen responsiveness. The present invention also relates to a process for preparing the catalyst system and to the slurry/suspension or gas-phase polymerization of olefins using the catalytic system, optionally with a small amount of aluminoxane cocatalyst.

Supported metallocene catalyst system for olefin polymerization, method for making and using the same

The present invention relates to a catalyst composition for homopolymerization or copolymerization of olefins comprising: (a) a solid catalyst precursor comprising a transition metal compound of group IVB, VB, or VIB of the periodic table, a magnesium compound and aliphatic polyketone particles; and (b) a cocatalyst comprising an aluminum alkyl, an aluminoxane or mixtures thereof; and a process for homopolymerisation or copolymerisation of olefins.

Catalyst composition for polymerization of olefins and process using the composition

This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises contacting a organometal compound/organoaluminum mixture, a treated solid oxide compound, and, optionally, a second organoaluminum compound. The solid oxide has been treated with an electron-withdrawing compound, in particular a chlorine, preferably zinc chloride and carbon tetrachloride.

Organometal catalyst compositions

Bridged and unbridged fluorenyl-containing metallocenes of the formula R&Prime; (FlR )(CpR )MQ wherein Fl is a fluorenyl radical, Cp is a cyclopentadienyl, indenyl, tetrahydroindenyl, or fluorenyl radical, each R is an organo radical, R&Prime; is a structural bridge linking (FlR ) and (CpR ), M is a metal selected from the group consisting of IVB, VB, and VIB metals, each Q is selected from the group consisting of hydrocarbyl or hydrocarbyloxy radicals and halogen, x is 1 or 0, k is an integer sufficient to fill out the remaining valences of M, n is in the range of 0 to 7, and m is 0 to 7, further characterized by the fact that if (CpR ) is unsubstituted fluorenyl and metallocene is an unbridged metallocene, then n is 1 to 7 and if R&Prime; is 1,1-dimethylmethylene and (CpR ) is unsubstituted cyclopentadienyl or 3-methylcyclopentadienyl, then n is 1 to 7.

Organometallic fluorenyl compounds, preparation, and use

Bridged fluorenyl-containing metallocenes of metals of Groups 4-6 and their use in forming homopolymers of alpha olefins or polymers of ethylene and optionally minor amounts of alpha olefins, wherein in each case at least one of the cyclic groups of the bridged ligand is a fluorenyl and the other is selected from indenyl, tetrahydroindenyl, fluorenyl, and in the case of the polymerization of ethylene optionally cyclopentadienyl.

Method and catalyst system for producing polyolefins with broadened molecular weight distributions

Polymeric ligands, polymeric metallocenes, and processes for preparing same are provided. The process for preparing polymeric metallocenes comprises reacting a polymeric ligand, a transition metal compound, and an alkali metal compound. In one embodiment, a process for preparing polymeric ligands comprises reacting at least one bridged cyclopentadienyl-type monomer and an initiator under polymerization conditions. In another embodiment, a polymeric ligand is represented by the formula &lsqb;Q&prime;&rsqb; , wherein Q&prime; is a unit containing at least one bridged cyclopentadienyl-type group and wherein n is 1-5000. In another embodiment, a polymeric metallocene is represented by the formula &lsqb;Q&Prime;MX &rsqb; , wherein Q&Prime; is a unit containing at least one fluorenyl-type group, M is a transition metal, each X is individually a hydrocarbyl group containing 1 to 20 carbon atoms, an alkoxy group containing 1 to 12 carbon atoms, an aryloxy group containing 6 to 20 carbon atoms, a halide, or hydride, m is 2 or 3, and wherein n is 1-5000. Other aspects of the present invention include a catalyst system comprising the polymeric metallocene and an organoaluminoxane, a method for preparing same, and a polymerization process employing the catalyst system.

Polymeric ligands, polymeric metallocenes, catalyst systems, preparation, and use

A self supporting film having one or more layers wherein at least one layer has a percent haze of less than 17.8 and the polymer of that layer consists essentially of a polyethylene having a density of at least 0.925 grams per cc, a molecular weight distribution of no more than 4, optionally containing a fluoroelastomer, and methods for making such film are disclosed.

Polyethylene film

Processes are provided that produce organo-aluminoxane compositions. Said processes comprise: desiccating a first mixture, where said first mixture comprises organo-aluminoxane molecules intermixed with a solvent, to produce a first composition, where said first composition comprises organo-aluminoxane molecules; mixing said first composition with a solvent to produce a second mixture, where said second mixture comprises organo-aluminoxane molecules and said solvent; contacting said second mixture with a insolublization agent to produce said organo-aluminoxane compositions. A polymerization process using a catalyst that comprises an organo-aluminoxane composition is also provided.

Processes to produce organo-aluminoxane compositions

A solid cocatalyst is prepared by reacting a suitable support base with an organoaluminum compound and then reacting that product with an activity promoting amount of water. The solid cocatalyst can be combined with a polymerization catalyst to form a catalyst system useful for the polymerization of olefins.

Polymerization catalyst systems, their preparation, and use

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Bartlesville, OK, United States of America

Syriac J Palackal