Exxonmobil Chemical Patents Inc.

Exxonmobil Chemicals Patents, Inc.

Matthew Cornyn Kuchta

Robert Tan Li

Terry John Burkhardt

Udo M Stehling

William T Haygood, Jr

James Charles Vizzini

James R Hart

Francis Charles Rix

David H McConville

John F Walzer, Jr

Gary Michael Diamond

Eric L Dias

Keith Hall

Anne Marie Lapointe

James M Longmire

Vince J Murphy

Xiaohong Bei

Lily Joy Ackerman

Pu Sun

Susan Jessica Schofer

Dawn E Verdugo

Tom Boussie

George Rodriguez

William Thomas Haygood

Periagaram Srinivasan Ravishankar

Anthony Nicholas Speca

The present invention provides a method of producing oligomers of olefins, comprising reacting olefins with a catalyst under oligomerization conditions. The catalyst can be the product of the combination of a chromium compound and a pyridyl amine or a heteroaryl-amine compound. In particular embodiments, the catalyst compound can be used to trimerize or tetramerize ethylene to 1-hexene, 1-octene, or mixtures of 1-hexene and 1-octene.

Methods for oligomerizing olefins

The present invention provides a method of producing oligomers of olefins, comprising reacting olefins with a catalyst under oligomerization conditions. The catalyst can be the product of the combination of a chromium compound and a heteroaryl-amine compound. In particular embodiments, the catalyst compound can be used to trimerize or tetramerize ethylene to 1-hexene, 1-octene, or mixtures of 1-hexene and 1-octene.

Methods of oligomerizing olefins

This invention relates to a catalyst compound represented by the formula: wherein: This invention also relates to catalyst systems comprising the above catalyst compound and a activator and the use of such catalyst systems to polymerize monomers, including olefin monomers.

Catalyst compound containing divalent tridentate ligand

Non-coordinating anions or anion precursors are disclosed. These non-coordinating anions serve as the activator for olefin polymerization catalyst systems. As such, they abstract an alkyl leaving group from a metallocene catalyst precursor leaving an activated catalyst charge balanced by a non-coordinating anion. These anions are formed by 3 or 4 partially fluorinated naphthyl ligands coordinated around boron (or other Group-13 element) creating corresponding tris-borane or tetrakis-borate complexes.

Partially fluorinated naphthyl-based borates

This invention relates to a catalyst support comprising the result of the combination of:

Hydrophobization and silica for supported catalyst

A discrete polyolefin catalyst activator is disclosed. A salient feature of invention borate-based activators is that at least one of the ligands on the borate non-coordinating anion (NCA) comprises a fluorinated aryl group linked to the boron atom through an acetylenic group appropriate pairing of invention activators with olefin polymerization. Catalyst precursors yield increased catalytic activity. Polymerization results are disclosed.

Bulky borate activations

This invention relates to a catalyst precursor compound comprising a tridentate phenoxy-amide-amine group bound to a group 3 to 12 metal or lanthanide metal. In particular, this invention relates to a catalyst precursor compound represented by the formula: 

Olefin polymerization catalyst system

This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula:wherein Rare identical or different and are each a halogen atom, a C-Calkyl group which may be halogenated, a C-Caryl group which may be halogenated, a C-Calkenyl group, a C-C-arylalkyl group, a C-Calkylaryl group, a C-Carylalkenyl group, a &#x2014;NR', &#x2014;SR&#x2032;, &#x2014;OR&#x2032;, &#x2014;OSiR&#x2032;or &#x2014;PR&#x2032;radical, wherein R&#x2032; is one of a halogen atom, a C-Calkyl group, or a C-Caryl group, and Rand Rare identical or different and are a Group 14 radical having from 1 to 20 carbon atoms or are each primary, secondary or tertiary butyl groups, aryl groups, isopropyl groups, fluoroalkyl groups, trialkyl silyl groups, or other groups of similar size.

Metallocene compositions

This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions are generally those of the bridged bis(2-R-4-phenylindenyl)metallocene type wherein the bridge is represented by the formula:wherein: Rto Rare identical or different and are one of a hydrogen atom, a C-Calkyl group, a C-Calkoxy group, a C-Caryl group, a C-Caryloxy group, a C-Calkenyl group, a C-Carylalkyl group, a C-Calkylaryl group, a C-Carylalkenyl group, or a halogen atom, or a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or hydrocarbyl, tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; or two or more adjacent radicals Rto R, including Rand R, together with the atoms connecting them form one or more rings; preferably, Rto Rare hydrogen, and Mis carbon, silicon, germanium or tin, preferably silicon.

This invention relates to bridged indenyl metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The bridge may be represented by the formula:wherein: Rto Rare identical or different, and are one of a hydrogen atom, a C-Calkyl group, a C-Calkoxy group, a C-Caryl group, a C-Caryloxy group, a C-Calkenyl group, a C-Carylalkyl group, a C-Calkylaryl group, a C-Carylalkenyl group, or a halogen atom, or together are a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or hydrocarbyl, tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; or two or more adjacent radicals Rto R, including Rand R, together with the atoms connecting them form one or more rings; and Mis carbon, silicon, germanium or tin.

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Houston, TX, United States of America

Matthew Cornyn Kuchta