The Goodyear Tire & Rubber Company

Exxonmobil Chemical Patents Inc.

Therm-o-disc, Incorporated

Exxonmobil Engineering & Technology Company

Exxonmobil Research and Engineering Company

The Yokohama Rubber Co., Ltd.

Edward John Blok

Paul Harry Sandstrom

Anthony Jay Dias

Mark Leslie Kralevich, Jr

Lawson G Wideman

David John Zanzig

Adel Farhan Halasa

Wen-Liang Hsu

Ian C Stewart

Ranjan Tripathy

Jason A Mann

Eugene Ronald Uhl

Andy Haishung Tsou

Yong Yang

John Joseph Andre Verthe

Jingwen Zhang

Cheryl Ann Losey

Gabor Kiss

Prasad S Khadkikar

John J Verthe

Sunny Jacob

Shuji Luo

Randal Howard Kerstetter, Iii

Yuan-Ju Chen

Howard Allen Colvin

Maria Dolores Ellul

Benjamin S Umansky

Rhutesh K Shah

Keith K Aldous

Michael Leslie Senyek

Richard A Demmin

James William Gleeson

Jeffrey A West

Jo Ann M Canich

Bruce Raymond Hahn

Lubin Luo

Shingo Futamura

Yuichi Hara

Donald E Donnelly

Bruce Alan Harrington

Tonson Abraham

Alan Anthony Galuska

Shun Sato

Paul T Q Nguyen

Robert J Claassen, Ii

Joseph Miles Ruscak

Thomas R Barbee

David T Harris

Paul Tu Quang Nguyen

Ronald DeYoung

Abdul M Jangda

Dennis Kumor

Jared Starling

Blase S Amadio

Alfred V Pickett

Shusaku Tomoi

William Paul Francik

Raymond Robert DiRossi

Norman Glenn Barber

Angelo Bergomi

Kuo-Shein Shen

Praveen C Ramamurthy

Anupriya Jain

John Eugene Varner

Elizabeth L Walker

Olivier Jean Georjon

Larry Ashley Gordon

Gregory M Holtzapple

James Anderson Schlademan

Edward R Terrill

Gary Keith Lawrence

Joseph V Rumler

James Edward Taucher

Alexander V Zabula

Ralph E Raulie

Jennifer Ann McDougal

Yen-Hao Lin

Tu N Pham

David J Freas

Karla D Caton

Mark R Scoular

Erick E Wurzinger

Carl Voellmecke

Robert Sterken

Charles L Volz

Martin E Levine

Mark Leslie Kraleyich, Jr

Eugene R Uhl

Paul T Qu Nguyen

Paul TQ Nguyen

Olivier JF Georjon

Howard Kerstetter Iii Randal

Robert J Claassen Ii

Eugene R Uhi

Randal H Kerstetter Iii

Tomoi Shusaku

An elastomeric composition is disclosed. The elastomeric composition includes, per 100 parts by weight of rubber (phr): about 5 to about 40 phr of styrene/butadiene copolymer; about 60 to about 100 phr of natural rubber or polyisoprene; a curative agent; an antioxidant; about 1 to about 20 phr carbon black; about 5 to about 40 phr plasticizing agent; about 40 to about 80 phr silica; about 1 to about 20 phr silane coupling agent and about 5 to about 30 phr of a polymer selected from the group consisting of ethylene-propylene-diene terpolymer, butyl rubber, poly(isobutylene-co-para-methylstyrene) and poly(isobutylene-co-para-methylstyrene-co-isoprene) terpolymer. The polymer based on ethylene-propylene-diene terpolymer, butyl rubber, poly(isobutylene-co-para-methylstyrene) and poly(isobutylene-co-para-methylstyrene-co-isoprene) terpolymer may be functionalized.

Functionalized polymers tread additive to improve tire performance for immiscible all-season tread

An elastomeric composition is disclosed. The elastomeric composition includes, per 100 parts by weight of rubber (phr): about 30 to about 70 phr of polybutadiene having a cis-1,4 linkage content of at least 95%; about 30 to 70 phr of natural rubber or polyisoprene; about 20 to 50 phr of a processing oil; a curative agent; an antioxidant; about 50 to about 80 phr filler; a silane coupling agent; and about 5 to about 30 phr of a polymer selected from the group consisting of ethylene-propylene-diene terpolymer, butyl rubber, poly(isobutylene-co-para-methylstyrene) and poly(isobutylene-co-para-methylstyrene-co-isoprene) terpolymer. The polymer based on ethylene-propylene-diene terpolymer, butyl rubber, poly(isobutylene-co-para-methylstyrene) and poly(isobutylene-co-para-methylstyrene-co-isoprene) terpolymer may be functionalized.

Functionalized polymers tread additive for improved winter tire performance

An elastomeric composition is disclosed. The elastomeric composition includes, per 100 parts by weight of rubber (phr): about 20 to about 40 phr of a polybutadiene having a cis-1,4 linkage content of at least 95%; about 40 to about 70 phr styrene/butadiene copolymer; about 5 to about 30 phr natural rubber or polyisoprene; a curative agent; an antioxidant; about 1 to about 20 phr carbon black; about 1 to about 30 phr plasticizing oil; about 40 to about 80 phr silica; about 1 to about 15 phr silane coupling agent and about 5 to about 30 phr of a polymer selected from the group consisting of an ethylene-propylene-diene terpolymer, butyl rubber, poly(isobutylene-co-para-methylstyrene) and poly(isobutylene-co-para-methylstyrene-co-isoprene) terpolymer.

Functionalized polymers tread additive to improve all-season tire performance

Elastomeric compositions comprising propylene-ethylene-diene terpolymer based polyolefin additives useful in tire tread compositions. The elastomeric compositions comprise 100 phr (parts by weight per hundred parts of total elastomer) diene elastomers; about 0 to about 80 phr of processing oil; 0 to about 80 phr of a hydrocarbon resin; about 60 to about 140 phr of filler; a curative agent; and about 5 to about 30 phr of a silane functionalized propylene-ethylene-diene terpolymer. The silane functionalized propylene-ethylene-diene terpolymer comprises from about 2 wt. % to about 40 wt. % of ethylene and/or C-Cα-olefins derived units, from 0.5 to 10 wt % of diene derived units, and a silane coupling agent. The present elastomeric compositions are useful as tire tread compositions for improved tire performance.

Propylene ethylene diene terpolymer polyolefin additives for improved tire tread performance

An elastomeric composition is disclosed. The elastomeric composition includes, per 100 parts by weight of rubber (phr): about 70 to about 90 phr of polybutadiene having a cis-1,4 linkage content of at least 95%; about 5 to 20 phr of a processing oil; about 5 to about 20 of sunflower oil; about 50 to about 75 phr of a filler; a curative agent; an antioxidant; and about 5 to about 30 phr of a propylene-ethylene-diene terpolymer containing from about 0.2 wt % to about 20 wt % ethylidene norbornene and/or vinyl norbornene and about 10 wt % to about 30 wt % of ethylene and/or C-Cα-olefins derived units.

Propylene-based polymer additives for improved tire tread performance

Provided herein are isobutylene-based polymer compositions comprising functionalized isobutylene-based polymer with olefinic side chain substituents, and a sulfur donor and/or accelerator cure system. The functionalized polymer is produced via nucleophilic substitution reaction in solution. The present functionalized isobutylene-based polymer compositions together with various accelerators and sulfur donors can form thermosets useful for pharmaceutical and tire applications without the use of zinc or a zinc oxide activator.

Isobutylene-based polymers with olefinic side chain substituents and curable compositions containing the same

An elastomeric composition is disclosed. The elastomeric composition includes, per 100 parts by weight of rubber (phr): about 0 to about 25 phr of poly butadiene having a cis-1,4 linkage content of at least 95%; about 75 to 100 phr of a styrene/butadiene copolymer; about 10 to about 30 phr of a processing oil; about 50 to about 70 phr of a filler; a curative agent; an antioxidant; a silane coupling agent; and about 5 to about 30 phr of a propylene-ethylene-diene terpolymer.

Provided herein are thioacetate isobutylene-based polymer compositions comprising thioalkylated functionalized polymer, and a sulfur donor and/or accelerator cure system. The thioalkylated functionalized polymer is produced via nucleophilic substitution reaction in solution. The present thioacetate functionalized isobutylene-based polymer compositions together with various accelerators and sulfur donors can form thermosets useful for pharmaceutical and tire applications without the use of zinc or a zinc oxide activator.

Thioacetate functionalized isobutylene-based polymers and curable compositions containing the same

An elastomeric composition is disclosed. The elastomeric composition includes, per 100 parts by weight of rubber (phr): about 30 to about 50 phr of polybutadiene having a cis-1,4 linkage content of at least 95%; about 40 to about 70 phr of styrene/butadiene copolymer; about 0 to about 20 phr of natural rubber or polyisoprene; about 0 to about 30 phr of a processing oil; about 10 to about 30 phr of a hydrocarbon resin; about 50 to about 75 phr of a filler; a curative agent; an antioxidant; a silane coupling agent; and about 5 to about 30 phr of a butyl copolymer rubber containing about 85 to about 99.5 mol % C-Cisoolefin(s) and from about 0.5 to about 15 mol % C-Cconjugated dienes.

Butyl rubber additives for improved tire tread performance

A supported catalyst system is based on a transition metal carbene including the moiety M1=CR*), wherein Mis the transition metal and R* is hydrogen or a C-Chydrocarbyl. The catalyst system can be supported on a metal oxide support such as silica or the catalyst can be self-supporting. Methods of making the catalyst system can involve precursors based on and/or reacted with aluminum alkyls, halides, and/or alkoxides. Methods of polymerizing cyclic olefins with the catalyst system can obtain polyalkenamers, cyclic olefin polymers, cyclic olefin copolymers, and other metathesis reaction products. The supported catalyst and/or monomer can be recovered and recycled to the polymerization reactor.

Metathesis catalyst system for polymerizing cycloolefins

Methods of post-polymerization modification of a polymer are provided herein. The present methods comprise the step of reacting a polymer with at least one nucleophile in a nucleophilic substitution reaction performed without a solvent to produce a functionalized polymer. The nucleophile can be selected from the group consisting of thioacetate, phenoxide, alkoxide, carboxylate, thiolate, thiocarboxylate, dithiocarboxylate, thiourea, thiocarbamate, dithiocarbamate, xanthate, thiocyanate. Nucleophilic substitution reaction can be performed in the presence of a phase transfer catalyst. Nucleophilic substitution reaction can also be performed via a two-step in-situ reactive mixing process with the initial formation of the polymer-amine ionomer (polymer-NRBr) which catalyzes the subsequent nucleophilic substitution with a second nucleophile to form a bi-functional polymer.

Solvent-free process for functionalizing isobutylene-based polymers

This invention relates to a silane-functionalized resin composition having a polymer backbone, wherein the polymer backbone is selected from at least one of Chomopolymers and copolymer resins, terpene homopolymer or copolymer resins, pinene homopolymer or copolymer resins, Chomopolymers and copolymer resins, C/Ccopolymer resins, alpha-methylstyrene homopolymer or copolymer resins, and combinations thereof, and wherein the polymer backbone is substantially free of styrene copolymer; and a silane, where the ratio of the mole percent of the silane to the mole percent of the polymer backbone in the composition is in the amount of 0.04 to 3.0 as determined by H-NMR.

Functionalized resin for tire applications

A functionalized polyolefin and a tire tread composition comprising the functionalized polyolefin is described. The functionalized polyolefin comprises a vinyl/vinylidene-terminated polyolefin in which the vinyl/vinylidene terminus is functionalized with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality. The invention is also directed to the synthesis of vinyl/vinylidene-terminated polyolefins, functionalization at the vinyl/vinylidene terminus with an alkoxysilane or an alkylsilane and optionally having ether, hydroxyl and/or amine functionality.

Chain end functionalized polyolefins for improving wet traction and rolling resistance of tire treads

This invention relates to production of propylene-predominant copolymers using a transition metal complex and at least two different non-coordinating anion activators. An olefinic feed comprising a C-Calpha olefin, ethylene, and a diene monomer is contacted under polymerization reaction conditions with a catalyst system comprising a first non-coordinating anion activator, a second non-coordinating borate activator differing from the first non-coordinating anion activator, and a transition metal complex comprising a tetrahydro-s-indacenyl or tetrahydro-as-indacenyl group bound to a group 3-6 transition metal. A molar ratio of the first non-coordinating anion activator to the second non-coordinating anion activator is sufficient to produce a melt flow rate under the polymerization reaction conditions for the resulting copolymer of about 30 g/10 min or below as determined by ASTM D-1238 (230&#xb0; C., 2.16 kg).

Multiple non-coordinating anion activators for propylene-ethylene-diene monomer polymerization reactions

An elastomeric composition and method incorporating a hydrocarbon polymer modifier with improved permanence. The composition comprises elastomer, filler and silane-functionalized hydrocarbon polymer modifier (Si-HPM) made in a pre-reaction adapted to couple the Si-HPM to the elastomer, filler or both, wherein the Si-HPM comprises an interpolymer of monomers chosen from piperylenes, cyclic pentadienes, aromatics, limonenes, pinenes, amylenes, and combinations thereof.

Silane-functionalized hydrocarbon polymer modifiers for elastomeric compositions

Growing community of inventors

Wadsworth, OH, United States of America

Edward John Blok