Exxonmobil Chemical Patents Inc.

Exxonmobil Chemicals Patents, Inc.

Exxonmobil Research and Engineering Company

Ramot at Tel-aviv University Ltd.

Chevron Oronite Company LLC

John Robert Hagadorn

Jo Ann M Canich

Matthew William Holtcamp

Peijun Jiang

Patrick Brant

Alexander Z Voskoboynikov

Catherine Anne Faler

Dmitry Vadimovich Uborsky

Georgy Pavlovich Goryunov

Donna Jean Crowther

Andy Haishung Tsou

Matthew S Bedoya

Rhutesh K Shah

Gregory S Day

Sarah J Mattler

Patrick J Palafox

Jian Yang

Timothy Marlow Boller

Crisita Carmen H Atienza

Charles James Ruff

Renuka N Ganesh

Mikhail I Sharikov

Jay L Reimers

Jingwen Zhang

Margaret T Whalley

Yifeng Hong

George Rodriguez

Carlos R Lopez-Barron

Florin Barsan

Caol P Huff

Ramyaa Mathialagan

Maksim E Shivokhin

Vladislav A Popov

Sudhin Datta

Narayanaswami R Dharmarajan

David A Cano

Charles J Harlan

Ron Walker

Alex E Carpenter

Oleg Vladimirovich Samsonov

Ilya S Borisov

Zhifeng Bai

Chase A Eckert

Gary Michael Diamond

Anthony Jay Dias

Mun Fu Tse

Keith Hall

David F Sanders

Garth Ronald Giesbrecht

James M Longmire

Xuan Ye

Ian C Stewart

Lily Joy Ackerman

Andrew G Narvaez, Jr

Alexander I Norman

Xin Chen

Pavel Sergeevich Kulyabin

Steven D Brown

Susan Jessica Schofer

Michelle E Titone

Gregory J Karahalis

Yaohua Gao

Arkady K Golenishchev

Hong Cheng

Liang Li

Gabor Kiss

Liehpao O Farng

Francis Charles Rix

Aspy Keki Mehta

Glen Barry Brons

Rainer Kolb

Chi-I Kuo

Dongming Li

Richard B Pannell

Lubin Luo

David T Ferrughelli

Robbert Duchateau

Yong Yang

John F Walzer, Jr

Man Kit Ng

Rohan A Hule

Kevin A Stevens

Machteld M W Mertens

Patrick C Chen

David L Morgan

Jacqueline A Lovell

Jan Kalfus

Viktor Buchholz

Hua Zhou

Felix M Zacarias

Emmanuel Ulysse

Ying Sun

Meagan E Evans

Pritesh A Patel

Rafael Sablong

Arturo Leyva

Gregory K Hall

Gerardo J Majano Sanchez

Shuhui Kang

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

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

A process to produce a branched ethylene-α-olefin diene elastomer comprising combining a catalyst precursor and an activator with a feed comprising ethylene, C3 to C12 α-olefins, and a dual-polymerizable diene to obtain a branched ethylene-α-olefin diene elastomer; where the catalyst precursor is selected from pyridyldiamide and quinolinyldiamido transition metal complexes. The branched ethylene-α-olefin diene elastomer may comprise within a range from 40 to 80 wt % of ethylene-derived units by weight of the branched ethylene-α-olefin diene elastomer, and 0.1 to 2 wt % of singly-polymerizable diene derived units, 0.1 to 2 wt % of singly-polymerizable diene derived units, and the remainder comprising C3 to C12 α-olefin derived units, wherein the branched ethylene-α-olefin diene elastomer has a weight average molecular weight (M) within a range from 100 kg/mole to 300 kg/mole, an average branching index (g′) of 0.9 or more, and a branching index at very high M(g′) of less than 0.9.

Ethylene-a-olefin-diene elastomers and methods of making them

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

This disclosure describes polymerization processes and processes for quenching polymerization reactions using reactive particulates, such as amorphous silica, as quenching agents, typically in solution or bulk polymerization processes.

Silica quenching agents for use in polymerization process

The present disclosure provides catalyst compounds represented by Formula (I): where Q is OR, SR, NRR, PRR, or a heterocyclic ring; each Ris independently hydrogen, C-Chydrocarbyl, substituted C-Chydrocarbyl, a heteroatom, or a heteroatom-containing group, or multiple Rare joined together to form a C-Ccyclic, heterocyclic, or polycyclic ring structure, or combination(s) thereof; each Xand Xis independently C-Chydrocarbyl, substituted C-Chydrocarbyl, a heteroatom, or a heteroatom-containing group, or Xand Xjoin together to form a C-Ccyclic, heterocyclic, or polycyclic ring structure; and Y is a hydrocarbyl. The present disclosure also provides catalyst systems including an activator, a support, and a catalyst of the present disclosure. The present disclosure also provides polymerization processes including introducing olefin monomers to a catalyst system. Additionally, the present disclosure provides a polyolefin formed by a catalyst system or method of the present disclosure.

Catalysts for olefin polymerization

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

The present disclosure provides borate or aluminate activators comprising cations having linear alkyl groups, catalyst systems comprising, and methods for polymerizing olefins using such activators.

Non-coordinating anion type activators containing cation having aryldiamine groups and uses thereof

In some embodiments, ethylene-propylene random copolymers as viscosity modifiers were synthesized with pyridyldiamido catalyst systems and a chain transfer agent. In some embodiments, the present disclosure provides for ethylene-propylene random copolymers having an ethylene content between about 45 wt % and about 55 wt %. In some embodiments, the ethylene-propylene random copolymer is used as a viscosity modifier in a lubricating composition and a fuel composition.

Ethylene-propylene linear copolymers as viscosity modifiers

A process for the synthesis of a granular polymer, the process comprising (a) providing an active polymerization mixture that includes polymer, monomer, catalyst and optional solvent; (b) introducing a hydroxy-containing diaryl acetyl compound to the active polymerization mixture to thereby provide an inactive polymer mixture; (c) separating the polymer solution into a first stream and a second stream, where the first stream includes the polymer and the hydroxy-containing diaryl acetyl compound, and the second stream includes the monomer and the optional solvent; and (d) fabricating granules from the first stream.

Process for producing polymers

In some embodiments, ethylene-propylene branched copolymers are synthesized with pyridyldiamido catalysts and a chain transfer agent, and their performance as viscosity modifiers in oil are detailed. In some embodiments, the present disclosure provides for ethylene-propylene branched copolymers having a shear thinning onset of less than about 0.01 rad/s and an HTHS value of less than about 3.3. In some embodiments, the ethylene-propylene branched copolymer is used as a viscosity modifier in a lubricating composition and a fuel composition.

Ethylene-propylene branched copolymers as viscosity modifiers with enhanced fuel economy

Pellet-stable olefinic copolymer bimodal rubber is made using parallel reactors, with one reactor synthesizing higher molecular weight (MW) rubber with dual catalysts, with an improved molecular weight split ratio and an improved composition distribution of the moderate and ultra-high MW components, while another reactor synthesizes random isotactic polypropylene copolymer (RCP). The effluents are reactor-blended and result in pellet-stable bimodal rubber (P-SBR), which may be pelletized. When making thermoplastic vulcanizates (TPVs) with P-SBR, the need to granulate rubber bales and subsequently use talc, clay, or other anti-agglomeration agents to prevent granulated rubber crumbs from agglomerating are eliminated. TPVs made with P-SBR have vulcanized rubber particles that are smaller and more uniform in size, resulting in TPVs with higher particle counts and more thermoplastic 'ligaments' between the particles, with such ligaments being made stronger by the added RCP. Such thus-produced TPVs have a lower hysteresis and flexural modulus, and better elastic properties.

Preparation of bimodal rubber, thermoplastic vulcanizates, and articles made therefrom

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 30 to 55 mol % ethylene, from 69.09 to 45 mol % Cto Ccomonomer, and from 0.01 to 7 mol % diene wherein the Tg of the terpolymer is &#x2212;28&#xb0; C. or less. Preferably, a propylene-ethylene-ethylidene norbornene is obtained.

Processes for producing high propylene content PEDM having low glass transition temperatures using tetrahydroindacenyl catalyst systems

Growing community of inventors

Houston, TX, United States of America

John Robert Hagadorn