Bridgestone Corporation

Bridgestone/firestone, Inc.

The Firestone Tire & Rubber Company

Bridgestone/firestone Research, Inc.

Bridgestone Corportion

David F Lawson

Thomas A Antkowiak

Mark L Stayer

James E Hall

Terrence Eugene Hogan

John R Schreffler

William L Hergenrother

Christine M Rademacher

Mark L Stayer, Jr

Yoichi Ozawa

Yuan-Yong Yan

David M Roggeman

Koichi Morita

Fuminori Ota

Michael L Kerns

Russell W Koch

Hideki Komatsu

Takashi Kitamura

Xiaorong Wang

Victor J Foltz

Hideo Takeichi

H James Harwood

Edward L Kay

James Oziomek

Sunil B Sarkar

David Saffles

Daniel F Graves

Roderic Paul Quirk

Naruhiko Mashita

Christopher G Robertson

Ashley S Hilton

Ryota Fujio

Anthony J Ramic

Steven Luo

William M Cole

Jung W Kang

Koji Masaki

Georg G A Böhm

Robert A Hayes

Arthur E Oberster

James D Ulmer

Delmar F Lohr, Jr

Thomas J Lynch

Lynn A Bryant

Alan G Altenau

James Harwood

Takayoki Yako

J P Kennedy

Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.

Processes for preparing aminosilane functionalized polymers

Aminosilane initiators and functionalized polymers prepared therefrom

Disclosed herein are metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer. A telechelic polymer may result from use of the metallated aminosilane compound and a functional terminator.

Aminosilane initiators, functionalized polymers prepared therefrom and related processes

Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer. A telechelic polymer may result from use of the metallated aminosilane compound as a functional terminator.

A functionalized polymer terminated by using an isocyanato alkoxysilane terminating agent. A method of preparing a functionalized polymer comprising the step of contacting a living polymer with an isocyanato alkoxysilane terminating agent.

Hysteresis elastomeric compositions comprising polymers terminated with isocyanato alkoxysilanes

A functionalized polymer defined by the formula &#x3c0;-R-&#x3b1;, where &#x3c0; is a polymer chain, Ris a bond or a divalent organic group, and &#x3b1; is a sulfur-containing heterocycle.

Functionalized polymers and improved vulcanizates therefrom

A functionalized polymer includes an elastomer, a terminal functional group including at least one heteroatom, and a unit intermediate the elastomer and the functional group; the intermediate unit includes a terminal moiety which, in its anionic form, is less basic than a secondary amino radical ion. Methods of making the functionalized polymer and of using it with particulate filler to make, e.g., a tire tread composition also are disclosed.

Functionalized polymer with linking group

A method for forming a vulcanizable composition of matter, the method comprising providing a polymer cement or latex comprising at least one rubber, adding at least one processing aid to the cement or latex to form a modified rubber cement or latex, isolating the rubber and at least one processing aid to form a premix, and mixing the premix with carbon black.

Method of improving carbon black dispersion in rubber compositions

A vulcanized rubber composition comprising the vulcanization product of a functional polymer, where the functional polymer is defined by the formula where R is selected from Cto Ctrialkyl-silyl groups, Cto Calkyl groups, Cto Ccycloalkyl groups, Cto Caryl groups, thienyl, furyl, and pyridyl groups; and R may optionally have attached thereto any of the following functional groups: Cto Calkyl groups, Cto Caryl groups, Cto Calkenyl groups, Cto Cnon-terminal alkynyl groups, ethers, tert-amines, oxazolines, thiazolines, phosphines, sulfides, silyls, and mixtures thereof; where Ris selected from Cto Calkylene groups, where X is NR, and where &#x3c0; is a polymer chain.

Use of sulfur containing initiators for anionic polymerization of monomers

A method of forming a functionalized polymer, the method comprising reacting a living polymer with a compound defined by the formula where Rincludes a monovalent organic group, Rindependently includes a monovalent organic group, each Rindependently includes hydrogen or a monovalent organic group, each Rindependently includes hydrogen or monovalent organic group, Rincludes a monovalent organic group, M is silicon or tin, and x includes an integer from about 2 to about 10, where Rand Rmay optionally each independently be alkoxy groups, and where R, R, and Rare non-Zerewitinoff organic groups.

Functionalized polymers and improved tires therefrom

A functionalized polymer includes a polymer chain and, bonded thereto, a functional group having the general formula &#x2014;NQORwhere Ris a hydrogen atom or &#x2014;CHZ where Z is a hydrogen atom or a substituted or unsubstituted aryl, alkyl, alkenyl, alkenaryl, aralkenyl, alkaryl, or aralkyl group and where Q is a moiety connected to the nitrogen atom of the functional group through a C, N, O, or S atom. The material can be the reaction product of a living polymer and a compound that includes nitroso functionality. The functional group can interact with particulate filler such as, e.g., carbon black.

Amine functionalized polymer

Provided is a method comprising reacting the anionic living end of a polymer with a compound selected from the group consisting of tin halides and silicon halides to produced a polymer with a homolytically cleavable group containing a Sn&#x2014;C bond or a Si&#x2014;C bond. An engineered plastic may then be produced by adding the polymer containing a homolytically cleavable group containing a Sn&#x2014;C bond or a Si&#x2014;C bond to a solvent comprising at least one vinyl monomer; (b) optionally adding at least one additional inert solvent; (c) optionally adding additives selected from the group consisting of extender oils, modifiers, and antioxidants; and (d) initiating polymerization of the at least one vinyl monomer by the use of an initiator and/or heat, wherein a free radical is produced from the polymer containing a homolytically cleavable group containing a Sn&#x2014;C bond or a Si&#x2014;C bond.

Method for generating free radical capable polymers using tin or silicon halide compounds

Growing community of inventors

Uniontown, OH, United States of America

David F Lawson