Bridgestone Corporation

Bridgestone/firestone, Inc.

The Firestone Tire & Rubber Company

Firestone Polymers, LLC

Bridgestone/firestone Research, Inc.

Bridgestone Corportion

Thomas A Antkowiak

David F Lawson

Mark L Stayer

James E Hall

John R Schreffler

Mark L Stayer, Jr

Russell W Koch

Hideki Komatsu

Gary Stephen Kyker

Daniel F Graves

Yoichi Ozawa

James Oziomek

Tai C Cheng

David J Dougherty

Adel Farhan Halasa

Steven Luo

Donald N Schulz

Christine M Rademacher

David M Roggeman

Koichi Morita

Koji Masaki

Ashley S Hilton

Ryota Fujio

H Jerrold Miller

Tristram W Bethea

David J Serbin

David Saffles

Anthony J Ramic

Mark S Prichard

A functionalized polymer defined by the formula where &#x3c0; is a polymer chain, Ris a divalent organic group, and &#x3b2; is a hydroxyl group, an alkoxyl group, or an amine group, where the amine group can be represented by the formula &#x2014;NR, where at least one R is a monovalent organic group and where the second R is hydrogen or a monovalent organic group, and where the alkoxyl group can be represented by the formula &#x2014;OR', where R&#x2032; is a monovalent organic group.

Functionalized polymers and tires made therefrom

A process for preparing a functionalized polymerization initiator, the process comprising combining a functionalized styryl compound and an organolithium compound.

Preparation of functionalized anionic polymerization initiators

A process for the manufacture of a baleable lithium carboxylate polymer. The process includes polymerizing at least one conjudated diene in the presence of an organolithium initiator to a substantial completion. Thereafter, the polymerization process is terminated by the addition of carbon dioxide.

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A continuous process for producing conjugated diene polymers comprising the steps of contacting, within an hydrocarbon solvent and within a continuous reactor, conjugated diene monomer and a catalyst composition prepared by combining: (a) a lanthanide compound, (b) an alkylating agent, and (c) a halogen-containing compound, and maintaining a non-ideal flow pattern within the continuous reactor so that 10% of the reagents entering the reactor at a reference time tare still present within the continuous reactor at a time t+xt, where tis the residence time corresponding to ideal flow within the continuous reactor and x is a numeral greater than 1.5.

Continuous process for the production of conjugated diene polymers having narrow molecular weight distribution and products therefrom

CO2 terminated rubber for plastics

Sulfenyl halide polymerization terminators

A process for preparing highly functionalized polymers comprising the steps of admixing anionically-polymerizable monomers and at least one anionic-polymerization initiator to form an admixture of living polymers, adding at least one lithium alkoxide stabilizer to the admixture of living polymers to form a stabilized admixture, and adding a functionalizing agent to the stabilized admixture.

Highly functionalized polymers and a process for making the same

Aminoalkyllithium compounds containing cyclic amines and polymers therefrom

A method of preparing a functionalized polymer comprising the steps of initiating the formation and propagation of an anionically-polymerized living polymer, and terminating the propagation of the living polymer by reacting the polymer with a terminating agent selected from the group of agents defined by the formulas (III), (IV), and (V)

A functionialized polymer according to the invention includes a polymer molecule having the general formula AYLi where A is a cyclic amine-containing radical having the general formula ##STR1## wherein R.sub.1 is a divalent alkylene, an oxy- or amino-alkylene, or substituted alkylene having from 6 to about 20 carbon atoms; R.sub.2 is a linear-, branched-, or cyclo-alkylene having from about 2 to about 20 carbon atoms; and Y is a divalent polymer radical and Li is a lithium atom bonded to a carbon atom of Y.

Aminoalkyllithium compounds containing cyclic amines and polymers

A functionalized polymer includes a polymer chain carrying at least one functional group selected from alkyl, dialkyl and cycloalkyl amine radicals having the general formula ##STR1## and cyclic amine radicals having the general formula ##STR2## where R.sub.1 is an alkyl, cycloalkyl or aralkyl having from 1 to about 12 carbon atoms, and R.sub.2 is an alkylene, substituted alkylene, oxy- or N-alkylamino-alkylene group having from about 3 to about 16 methylene groups. The invention also provides products based upon such polymers.

Amine containing polymers and products therefrom

There is disclosed a process for the regulation of the molecular weight of high cis polybutadiene prepared by polymerizing butadiene under solution polymerization conditions employing as the catalyst system a mixture of (a) organoaluminum compounds; (b) organonickel compounds; and (c) fluorine containing compounds; said polymerization being conducted in the presence of alkali or alkaline earth metal salts of organic carboxylic acids.

Molecular weight regulation of cis-1,4-polybutadiene using carboxylates

A functionalized polymer according to the invention includes a polymer molecule having the general formula AYLi where A is a cyclic amine-containing radical having the general formula ##STR1## wherein R.sub.1 is a divalent alkylene, an oxy- or amino-alkylene, or substituted alkylene having from 6 to about 20 carbon atoms; R.sub.2 is a linear-, branched-, or cyclo-alkylene having from about 2 to about 20 carbon atoms; and Y is a divalent polymer radical and Li is a lithium atom bonded to a carbon atom of Y.

An organolithium compound according to the present invention containing a cyclic amino group, has the general formula: ##STR1## wherein R.sub.1 is a divalent alkylene, an oxy- or amino-alkylene, or substituted alkylene having from 6 to about 20 carbon atoms; R.sub.2 is a linear-, branched-, or cyclo-alkylene having from about 2 to about 20 carbon atoms; and the lithium, Li, is bonded directly to a carbon atom of R.sub.2. A method of preparing an organolithium compound containing a cyclic amino group, comprising reacting a cyclic amino organo halide having the general formula ##STR2## where R.sub.1 and R.sub.2 are as above, and X is bromine or chlorine bonded directly to a carbon atom of R.sub.2, with a lithium reactant selected from lithium metal or an organolithium compound.

Alkyllithium compounds containing cyclic amines and their use in

Growing community of inventors

Wadsworth, OH, United States of America

Thomas A Antkowiak