Exxonmobil Chemical Patents Inc.

Exxon Chemical Patents, Inc.

Univation Technologies, LLC

Exxonmobil Chemicals Patents, Inc.

John F Walzer, Jr

Donna Jean Crowther

Francis Charles Rix

Bernard J Folie

Gary Michael Diamond

Keith Hall

Matthew Cornyn Kuchta

Peijun Jiang

Margaret M Wu

Eric L Dias

Robert Tan Li

Anne Marie Lapointe

David H McConville

James M Longmire

Vince J Murphy

James Richardson Lattner

John Scott Buchanan

Anthony Jay Dias

Rinaldo Soria Schiffino

Sudhin Datta

Charles C Cozewith

Jay L Reimers

John Robert Hagadorn

Jo Ann M Canich

Lily Joy Ackerman

Xiaohong Bei

Pu Sun

Dawn E Verdugo

Susan Jessica Schofer

Tom Boussie

Catalina L Coker

Laughlin G McCullough

Stephen B Roscoe

Bruce Alan Harrington

George Alan Vaughan

Anastasios I Skoulidas

Steven Paul Rucker

Charles Stanley Speed

Krishnan Sankaranarayanan

Milind Ajinkya

Richard Allen Fisher

Stephen M Wood

Howard William Turner

Bernard Jean Folie

Jean M Frechet

George Rodriguez

Lisa Saunders Baugh

Jo Ann Marie Canich

Mark Paul Hagemeister

Norman Yang

Timothy Daniel Shaffer

Jean M J Frechet

Timothy D Shaffer

Andrew Jackson

David Michael Fiscus

Sarah J Mattler

Carlos R Lopez-Barron

Shakeel H Tirmizi

Victor Oswaldo Nava-Salgado

Chia Shian Chee

Gordon H Lee

Anna A Michels

Frederick Yip-Kwai Lo

Milind B Ajinkya

Shakeel Tirmizi

This invention relates to a process to using an aminopyridinate scandium or yttrium metal (typically scandium) catalyst compound to produce ethylene conjugated diene copolymers, preferably ethylene isoprene copolymers having: 1) from 75 to 90 mol % ethylene; 2) from 10 to 25 mol % isoprene; 3) a Tg of 0&#xb0; C. or less; 4) 1,4 isomer present at 60 wt % or less; 5) 3,4 and 1,2 present at 40% or more; 6) Mn of 250,000 g/mol or less; and 7) optionally, a Tm of 100&#xb0; C. or less.

Process to produce ethylene conjugated diene copolymers and copolymers therefrom

A low viscosity poly(apha-olefin) (PAO) is produced by contacting one or more C3 to C24 alpha-olefins with an unbridged, substituted bis cyclopentadienyl transition metal compound, a non-coordinating anion activator, and an alkyl-aluminum compound. The molar ratio of transition metal compound to activator is 10:1 to 0.1:1, and the molar ratio of alkyl aluminum compound to transition metal compound is 1:4 to 4000:1. The transition metal compound has either (a) at least one non-isoolefin substitution on both cyclopentadienyl rings, or (b) at least two substitutions on at least one cyclopentadienyl ring. The PAO is comprised of at least 50 mole % of C3 to C24 alpha-olefins and has a kinematic viscosity at 100&#xb0; C. of 20 cSt or less.

Low viscosity poly-alpha-olefins

This invention relates to inventive ethylene-based copolymers comprising 75.0 wt % to 99.5 wt % of ethylene-derived units and 0.5 wt % to 25.0 wt % of C3 to C20 olefin derived units; the inventive ethylene-based copolymer having: a density in the range of from 0.900 to less than 0.940 g/cm; a g'(vis) of less than 0.80; a melt index, I, of from 0.25 to 1.5 g/10 min.; a Mw/Mn within a range from 3.0 to 6.0, and Mz/Mn greater than 8.0; and an absence of a local minimum loss angle at a complex modulus, G*, of 1.00&#xd7;10to 3.00&#xd7;10Pa.

Branched polyethylene with improved processing and high tear films made therefrom

This invention relates to a polyalpha-olefin (and hydrogenated analogs thereof) comprising more than 50 mole % of one or more C5 to C24 alpha-olefin monomers where the polyalpha-olefin has: a) 40 mole % or more of mm triads, b) a Bromine number of Y or greater, where Y is equal to 89.92*(V)'&#xb0;5863, where V is the Kinematic Viscosity of the polyalpha-olefin measured at 100&#xb0; C. in cSt, and c) 1,2 disubstituted olefins present at 7 mole % or more, preferably having Z mole % or more of units represented by the formula: where j, k and m are each, independently, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22, n is an integer from 1 to 350, and where Z=8.420*Log(V)&#x2212;4.048, where V is the kinematic viscosity of the polyalpha-olefin measured at 1000 C in cSt This invention also relates to process to produce such polyalpha-olefins. 

Polyalpha-olefin compositions and processes to produce the same

This invention relates to a method to selectively oligomerize olefins comprising contacting olefins with: 1) at least one diaryl-substituted diphosphine ligand; 2) a chromium metal precursor; and 3) optionally, one or more activators. In a particular embodiment, the method for selectively oligomerizing olefins includes trimerizing ethylene to selectively form 1-hexene.

Phosphine ligand-metal compositions, complexes, and catalysts for ethylene trimerizations

A low viscosity poly(alpha-olefin) (PAO) is produced by contacting one or more C3 to C24 alpha-olefins with an unbridged, substituted bis-cyclopentadienyl transition metal compound, a non-coordinating anion activator, and an alkyl-aluminum compound. The molar ratio of transition metal compound to activator is 10:1 to 0.1:1 and the molar ratio of alkyl aluminum compound to transition metal compound is 1:4 to 4000:1. The transition metal compound has either (a) at least one non-isoolefin substitution on both cyclopentadienyl rings, or (b) at least two substitutions on at least one cyclopentadienyl ring. The PAO is comprised of at least 50 mole % of C3 to C24 alpha-olefins, has a Mw/Mn between 1 and 1.4, and a kinematic viscosity at 100&#xb0; C. of 20 cSt or less.

Process to produce low viscosity poly-alpha-olefins

The present invention relates to a method for preparing olefin comonomers from ethylene. The comonomer generated can be used in a subsequent process, such as a polyethylene polymerization reactor. The comonomer generated can be transported, optionally without isolation or storage, to a polyethylene polymerization reactor. One method includes the steps of: feeding ethylene and a catalyst in a solvent/diluent to one or more comonomer synthesis reactors; reacting the ethylene and the catalyst under reaction conditions sufficient to produce an effluent comprising a desired comonomer; forming a gas stream comprising unreacted ethylene, and a liquid/bottoms stream comprising the comonomer, optionally by passing the effluent to one or more downstream gas/liquid phase separators; and purifying at least a portion of said liquid/bottoms stream by removing at least one of solid polymer, catalyst, and undesirable olefins therefrom.

Process for generating alpha olefin comonomers

The present invention relates to an in-line method for generating comonomer, from monomer, such as ethylene. The comonomer generated is stored prior to transporting to a polyethylene polymerization reactor. The in-line method includes the steps of providing an in-line comonomer synthesis reactor and a downstream gas/liquid phase separator prior to the polymerization reactor; feeding ethylene monomer and a catalyst in a solvent and/or diluent to the comonomer synthesis reactor; reacting the ethylene monomer and the catalyst in solvent and/or diluent under reaction conditions to produce an effluent stream including ethylene monomer and comonomer; passing the effluent stream from the comonomer synthesis reactor to the downstream gas/liquid phase separator to separate a gas stream from a bottom stream, wherein the gas stream is a mixture of ethylene monomer and comonomer; and passing the gas stream to the polymerization reactor to provide the necessary comonomer input.

Process for generating linear apha olefin comonomers

This invention relates to processes to produce liquid poly-alpha-olefins (PAOs) having a kinematic viscosity at 100&#xb0; C. of more than 20 cSt in the presence of a metallocene catalyst with a non-coordinating anion activator and hydrogen.

Process to produce high viscosity fluids

The present invention relates to an in-line method for generating comonomer from monomer, such as ethylene. The comonomer generated is directly transported, without isolation or storage, to a polyethylene polymerization reactor. The in-line method includes the steps of providing an in-line comonomer synthesis reactor and a downstream gas/liquid phase separator prior to the polymerization reactor; feeding ethylene monomer and a catalyst in a solvent and/or diluent to the comonomer synthesis reactor; reacting the ethylene monomer and the catalyst in solvent and/or diluent under reaction conditions to produce an effluent stream including ethylene monomer and comonomer; passing the effluent stream from the comonomer synthesis reactor to the downstream gas/liquid phase separator to separate a gas stream from a bottom stream, wherein the gas stream is a mixture of ethylene monomer and comonomer; and passing the gas stream to the polymerization reactor to provide the necessary comonomer input.

In-line process for generating comonomer

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

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

Growing community of inventors

Seabrook, TX, United States of America

John F Walzer, Jr