Exxonmobil Chemical Patents Inc.

Exxonmobil Research and Engineering Company

Exxon Chemical Patents, Inc.

Chevron Oronite Company LLC

Exxonmobil Engineering & Technology Company

Exxonmobil Chemicals Patents, Inc.

Jo Ann M Canich

Matthew William Holtcamp

Sudhin Datta

Alexander Z Voskoboynikov

John Robert Hagadorn

Peijun Jiang

Dmitry Vadimovich Uborsky

Vyatcheslav V Izmer

Rainer Kolb

Periagaram Srinivasan Ravishankar

Francis Charles Rix

Jian Yang

Narayanaswami R Dharmarajan

Gregory S Day

Dmitry S Kononovich

Catherine Anne Faler

Phillip Thomas Matsunaga

Andy Haishung Tsou

Margaret M Wu

Gabor Kiss

Guang Cao

Mun Fu Tse

Laughlin G McCullough

Shifang Luke Luo

George Rodriguez

Lubin Luo

Crisita Carmen H Atienza

Edward John Blok

Machteld Maria Mertens

Liehpao O Farng

Anthony Jay Dias

Ramin Abhari

Matthew S Bedoya

David John Lohse

Dongming Li

Armenag Hagop Dekmezian

Lisa Saunders Baugh

Mark Paul Hagemeister

David F Sanders

Garth Ronald Giesbrecht

Xuan Ye

Matthew Scott Ide

Quanchang Li

Jean-Roch H Schauder

Charles Lewis Sims

Timothy Marlow Boller

John F Walzer, Jr

David A Cano

Kyle G Lewis

Alan Anthony Galuska

Norman Yang

Rhutesh K Shah

Alexey N Ryabov

Catalina L Coker

Georgy Pavlovich Goryunov

Mikhail V Nikulin

Jingwen Zhang

Alexander V Lygin

Florin Barsan

Sarah J Mattler

Jennifer L Rapp

Andrey F Asachenko

Mikhail I Sharikov

Oleg Vladimirovich Samsonov

Pavel Sergeevich Kulyabin

Ilya S Borisov

Hua Zhou

Ian C Stewart

Kevin Richard Squire

Charles J Harlan

Timothy D Shaffer

Suzzy C Ho

Patrick J Palafox

Michelle E Titone

Steven Paul Rucker

Bogdan A Guzeev

Michael F McDonald, Jr

Cesar Alberto Garcia-Franco

Andrew Jackson

Patrick C Chen

Zhifeng Bai

Charles James Ruff

David L Morgan

Margaret T Whalley

Alex E Carpenter

William R Gunther

Alexey A Tsarev

Kevin A Stevens

Machteld M W Mertens

Robert Patrick Reynolds, Jr

Craig Janzen Emett

Carlos R Lopez-Barron

Suzzy C H Ho

Aaron Sattler

Gary L Casty

Xiongdong Lian

John Patrick Soisson

Lutz Erich Jacob

Guy Joseph Wouters

Meagan E Evans

The present disclosure relates to lubricant compositions comprising a branched copolymer and methods for making such compositions. Lubricant compositions of the present disclosure comprise an oil and a copolymer and have a high temperature high shear (HTHS) viscosity of about 5 or less, shear stability index (30 cycles) of from about 2% to about 80%, a ratio of thickening efficiency to shear stability index (30 cycles) of from about 1:2 to about 1:30, a kinematic viscosity at 100° C. of from about 3 cSt to about 30 cSt, and a thickening efficiency of about 1 or more. In another class of embodiments, the present disclosure provides a lubricant composition comprising a first and a second copolymers wherein the first copolymer has an ethylene content higher than that of the second copolymer, and wherein at least one of the two copolymers is a long chain branched ethylene copolymer.

Ethylene-propylene branched copolymers as viscosity modifiers

In some embodiments, a lubricating oil includes at least 50 wt % of a base oil, based on total weight of the lubricating oil. The lubricating oil includes at least 0.1 wt % of a polypropylene homopolymer having a racemic dyad content of about 60% to about 99% and a number average molecular weight (by GPC DRI) of about 10,000 g/mol to about 250,000 g/mol, wherein a total amount of the base oil and the polypropylene homopolymer does not exceed 100 wt %.

Polypropylene viscosity modifiers and lubricating oils thereof

A process for making a poly alpha-olefin (PAO) having high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight comprising contacting a feed containing a C-Calpha-olefin with a catalyst system comprising non-aromatic-hydrocarbon soluble activator and a metallocene compound, typically a cyclopentadienyl-tetrahydro-s-indacenyl group 4 transition metal compound.

Process to produce low viscosity polyalphaolefins using non-aromatic-hydrocarbon soluble activators

The present disclosure provides methods for producing an olefin polymer by contacting a C-Colefin and ethylene with a catalyst system including an activator and a metallocene catalyst compound comprising a substituted or unsubstituted tetrahydro-s-indacenyl group and obtaining a C-Colefin-ethylene copolymer typically comprising from 0.5 to 43 wt % ethylene, and from 99.5 to 57 wt % Cto Ccomonomer wherein the Tg of the terpolymer is from 0 to −60° C.

High propylene content EP having low glass transition temperatures

A process for making a poly alpha-olefin (PAO) having a relatively high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and a relatively low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight. The process includes: contacting a feed containing a C-Calpha-olefin with a catalyst system comprising activator and a bis-cyclopentadienyl metallocene compound, typically a cyclopentadienyl-benzindenyl group 4 transition metal compound.

Catalyst systems and processes for poly alpha-olefin having high vinylidene content

Provided herein are methods of making blended polymer compositions having enhanced elasticity. The present methods comprise the steps of producing a first polymer composition using a VTP catalyst system, producing a second polymer composition using a HMP catalyst system and combining the first polymer composition and the second polymer composition to make the blended polymer composition. The present methods include blending/combining the polymer compositions produced by different catalyst systems. One such catalyst system includes (i) a vinyl-terminated polymer (VTP) catalyst system comprising a VTP catalyst compound (referred to herein also as a 'VTP catalyst') and one or more activators. Another catalyst system includes a high molecular-weight polymer (HMP) catalyst system comprising a HMP catalyst compound (referred to herein also as a “HMP catalyst”) and one or more activators. The activators of these different catalyst systems can be the same or different in whole or in part.

Methods of making polymer compositions with enhanced elasticity by employing VTP and HMP catalyst systems in parallel processes

Provided is a lubricating oil composition that includes a major amount of a lubricant base oil and a minor amount of a viscosity index improver comprising a syndiotactic propylene-based ethylene-propylene copolymer comprising: a) 2 to 20% by weight of ethylene, b) 80 to 98% by weight of propylene; c) 50 to 99% of rr triads; and d) Mw (LS) of 10 to 250 kg/mol.

Lubricating oil composition with viscosity modifier based on syndiotactic propylene-based ethylene- propylene copolymers with improved properties

This invention relates to hexahydrocyclopenta[e]-as-indacen-1-yl and octahydrobenzo[e]-as-indacen-1-yl based catalyst complexes represented by the formula:TLAMXwherein: M is a group 3-6 metal; n is the oxidation state of M; A is a substituted or unsubstituted polycyclic arenyl ligand bonded to M wherein the polycyclic ligand contains an indenyl fragment with two partially unsaturated rings annulated to the phenyl ring of the indenyl ligand fragment; L is a substituted or unsubstituted monocyclic or polycyclic arenyl ligand bonded to M, or a substituted or unsubstituted monocyclic or polycyclic heteroarenyl ligand bonded to M, or is represented by the formula JR'where J is a group 15 or 16 heteroatom bonded to M, R&#x2032; is a substituted or unsubstituted hydrocarbyl substituent bonded to J, and z is 1 or 2; T is a bridging group; y is 1 or 0; and each X is independently a univalent anionic ligand, or two Xs are joined and bound to the metal atom to form a metallocycle ring, or two Xs are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand.

Hexahydrocyclopenta[e]-as-indacen-1-yl and octahydrobenzo[e]-as-indacen-1-yl based catalyst complexes and process for use thereof

It has become desirable to limit or exclude aromatic solvents, such as toluene, from polymerization reactions. For polymerization reactions employing a non-metallocene transition metal complex as a precursor to a polymerization catalyst, exclusion of aromatic solvents may be difficult due to the limited solubility of such complexes in aliphatic hydrocarbon solvents. Aliphatic hydrocarbon solutions suitable for conducting olefin polymerization reactions, particularly solution polymerization reactions, may comprise: a non-metallocene transition metal complex dissolved in an aliphatic hydrocarbon solvent at a concentration ranging from about 2 mM to about 20 mM at 25&#xb0; C. in the presence of an organoaluminum compound. A molar ratio of aluminum of the organoaluminum compound to transition metal of the transition metal complex is about 1:1 or greater, and the organoaluminum compound comprises at least about 8 carbons per aluminum.

Solubility improvement of non-metallocene transition metal complexes in aliphatic hydrocarbon solvents

This invention relates to a supported catalyst system comprising: (i) at least one first catalyst component comprising a group 4 bis(phenolate) complex; (ii) at least one second catalyst component comprising a 2,6-bis(imino)pyridyl iron complex; (iii) activator; and (iv) support. The catalyst system may be used for preparing polyolefins, such a bimodal polyethylene, typically in a gas phase polymerization.

Supported catalyst systems and processes for use thereof

The present disclosure relates to Lewis base catalysts. Catalysts, catalyst systems, and processes of the present disclosure can provide high temperature ethylene polymerization, propylene polymerization, or copolymerization. In at least one embodiment, the catalyst compounds belong to a family of compounds comprising amido-phenolate-heterocyclic ligands coordinated to group 4 transition metals. The tridendate ligand may include a central neutral hetrocyclic donor group, an anionic phenolate donor, and an anionic amido donor. In some embodiments, the present disclosure provides a catalyst system comprising an activator and a catalyst of the present disclosure. In some embodiments, the present disclosure provides a polymerization process comprising a) contacting one or more olefin monomers with a catalyst system comprising: i) an activator and ii) a catalyst of the present disclosure.

Lewis base catalysts and methods thereof

The present disclosure generally relates to process to produce a poly alpha-olefin (PAO), comprising: a) introducing a first alpha-olefin to a first catalyst system comprising non-aromatic hydrocarbon soluble activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions, wherein the first alpha-olefin is preferably introduced to the reactor at a flow rate of about 100 g/hr or more, to form a first reactor effluent comprising PAO (such as at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more); and b) introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition comprising an acid catalyst, such as BF, in a second reactor to form a second reactor effluent comprising PAO trimer.

Dimer selective metallocene catalysts, non-aromatic hydrocarbon soluble activators, and processes to produce poly alpha-olefin oligmers therewith

Metallocene complexes represented by the structure below are useful for alpha olefin oligomerization in the presence of an activator to generate polyalphaolefins having a high percentage of vinylidene termination and relatively low Mn values. M is a group 4 transition metal. A is a bridging group having one bridging atom extending between a first indenyl ring and a second indenyl ring. Each X is independently an anionic ligand, or two Xs are joined and bound to M to form a metallocycle ring, or two Xs are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand. R, R, R, R, R, R, Rand Rare hydrogen. R, R, R, and Rare independently a C-C, optionally substituted, hydrocarbyl group, or Rand Rand/or Rand Rare bonded together to form an optionally substituted hydrocarbyl ring structure.

Ansa-bis(inden-2-yl) catalysts for producing vinylidene-terminated polyalphaolefins

The present disclosure provides methods for producing an olefin polymer by contacting a C-Colefin, ethylene and a diene with a catalyst system including an activator and a metallocene catalyst compound comprising a substituted or unsubstituted indacenyl group and obtaining a C-Colefin-ethylene-diene terpolymer typically comprising from 1 to 35 mol % of ethylene, from 98.9 to 65 mol % C-Colefin, and, optionally, from 0.1 to 10 mol % diene. Preferably, a propylene-ethylene-ethylidene norbornene is obtained.

Processes for producing high propylene content PEDM using tetrahydroindacenyl catalyst systems

Growing community of inventors

Houston, TX, United States of America

Jo Ann M Canich