Bridgestone Corporation

Chen, Yaohong

Pan, Xiao-dong

Brumbaugh, Dennis

Kelley, Edward

Edward D Kelley

Xiaorong Wang

Victor J Foltz

Xiao-Dong Pan

Yaohong Chen

Dennis R Brumbaugh

Steven Luo

Yuan-Yong Yan

Christine M Rademacher

Amy M Randall

Sheel Agarwal

Mindaugas Rackaitis

Walter Tomaszewski

Michael W Hayes

Zhong-Ren Chen

Nicole Capitos-Davis

Tatsuro Hamada

Sheel P Agarwal

A wax-polymer compound includes (a) a polymer component that is a polymerized unsaturated monomer, optionally copolymerized with a vinyl-aromatic monomer, and (b) a halogenated hydrocarbon wax component. The polymer component is grafted to the halogenated hydrocarbon wax component, and the wax-polymer compound has a number average molecular weight of about 1,000 to about 100,000. A method of making the wax-polymer compound and a coated silica particle are also disclosed.

Halogenated wax grafted to low molecular weight polymer

A wax-polymer compound includes (a) a polymer component that is a polymerized unsaturated monomer, optionally copolymerized with a vinyl-aromatic monomer, and (b) a halogenated hydrocarbon wax component. The polymer component is grafted to the halogenated hydrocarbon wax component, and the wax-polymer compound has a number average molecular weight of about 1,000 to about 100,000, A method of making the wax-polymer compound and a coated silica particle are also disclosed. A rubber composition includes a rubber elastomer comprising a polymerized unsaturated monomer and optionally a polymerized vinyl-aromatic monomer, the elastomer having a number average molecular weight of about 100,000 to about 1,000,000. It further includes a filler in an amount of about 5 to about 200 phr, the filler comprising carbon black, silica, or both; and a wax-polymer additive.

Halogenated wax grafted to low molecular weight polymer and rubber composition

A method of measuring wear rate in an actual rubber tire. A section of rubber is cut out of an actual tire below the surface of the tire. The cut out section is attached to the surface of a first wheel. An abrasive substance is attached to the surface of a second wheel. The two wheels are rotated for a predetermined time, in opposite directions, in contact with each other, at uneven rates resulting in some slippage between the surfaces of the two wheels. The wear rate of the rubber tire is measured based on the changes in the cut section over time, in much less time and using less resources than required by conventional wear measurement methods.

Method of measuring wear rate in rubber tires

Modified rubber compositions containing an elastomer component and a modifier comprising a steroid and/or a peptide and methods of their production. Such modified rubber compositions can have improved properties and can be useful in making various articles of manufacture, such as, for example, in the manufacture of tires.

Modified rubber compositions and methods of preparation

Blends of syndiotactic 1,2-polybutadiene and rubbery elastomers are prepared by a process that comprises polymerizing 1,3-butadiene monomer into syndiotactic 1,2-polybutadiene within a rubber cement of an elastomeric terpolymer by using a chromium-based, molybdenum-based, or iron-based catalyst composition. Polymer composition comprising the blend with improved properties is also provided.

Process for producing blends of syndiotactic, 1,2-polybutadiene and rubbery elastomers

The present invention provides polymeric nanoparticles comprising triblock and optionally diblock copolymer chains. The architecture of the polymeric nanoparticles may be controlled, resulting in nanoparticles having non-spherical shapes. The present invention also provides a method of preparing the polymeric nanoparticles and a rubber article such as a tire manufactured from a formulation comprising the polymer nanoparticles.

Non-spherical nanoparticles made from living triblock polymer chains

A vulcanizate that has improved damping properties where the vulcanizate is prepared by the steps comprising blending an unsaturated damping additive within a vulcanizable composition of matter, wherein the vulcanizable composition of matter includes a vulcanizable elastomer, and effecting vulcanization of the elastomer.

Elastomeric compositions for damping

The present invention is generally directed to a process for forming a diene-rubber grafted centipede polymer. The process includes copolymerizing a copolymer comprising a maleimide and at least one block chosen from the group consisting of vinyl aromatic hydrocarbons, R R ethylenes, or alkyl vinyl ethers with an amine. The amine is further functionalized with at least one functional group capable of grafting to a diene rubber. The copolymer is cocured with a diene rubber to form the diene-rubber grafted centipede polymer.

Alkenyl-co-maleimide/diene rubber copolymers and applications

A vulcanizate that has improved damping properties where the vulcanizate is prepared by the steps comprising blending a saturated damping additive within a vulcanizable composition of matter, wherein the vulcanizable composition of matter includes a vulcanizable elastomer, and effecting vulcanization of the elastomer.

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Tallmadge, OH, United States of America

Edward D Kelley