Christopher L Robertson

US Patent:

7230050, Jun 12, 2007

Filed:

Sep 30, 2005

Appl. No.:

11/240902

Inventors:

Christopher G. Robertson - Akron OH, US
Terrence E. Hogan - Akron OH, US
William L. Hergenrother - Akron OH, US
David F. Lawson - Uniontown OH, US

Assignee:

Bridgestone Corporation - Chuo-ku, Tokyo

International Classification:

C08L 21/00

US Classification:

525 95, 525 98, 525241, 524493, 524496

Abstract:

A tire component comprising a vulcanized rubber, and from about 3 to about 85 parts by weight, per 100 parts by weight rubber, of a filler dispersed within said vulcanized rubber, where the vulcanized rubber includes the vulcanized residue of a thermoplastic-elastomeric block copolymer defined by the formulaα-π-θ-ωwhere α is a hydrogen atom or a functional group, π includes an elastomeric block, θ includes a thermoplastic block, and ω includes a hydrogen atom or a functional group.

US Patent:

7534839, May 19, 2009

Filed:

Jun 9, 2004

Appl. No.:

10/560151

Inventors:

David F. Lawson - Uniontown OH, US
Christine Rademacher - Akron OH, US
Christopher Robertson - Akron OH, US

Assignee:

Bridgestone Corporation - Chuo-ku, Tokyo

International Classification:

C08C 19/12
C08C 19/20
C08C 19/22
C08C 19/25
C08C 19/30
C08F 8/30

US Classification:

5253319, 5253323, 5253329, 525342, 525351, 5253592, 5253593, 525375, 525376, 525377, 525383, 525385, 524572, 524575, 524576

Abstract:

Anionically-polymerized living polymers are sequentially functionalized with certain agents X′ and Y′. A method of preparing a functionalized polymer comprising the steps of reacting the polymer with a functionalizing agent X′, and then further reacting the polymer with a functionalizing agent Y′.

US Patent:

7875671, Jan 25, 2011

Filed:

Aug 3, 2007

Appl. No.:

11/890139

Inventors:

Christopher G. Robertson - Akron OH, US
Terrence E. Hogan - Akron OH, US
William L. Hergenrother - Akron OH, US

Assignee:

Bridgestone Corporation

International Classification:

B60C 1/00
C08K 3/34
C08K 3/04

US Classification:

524495, 524492

Abstract:

A method for preparing a polymeric composition, the method comprising introducing a functionalized polymer and a filler. Mixing the functionalized polymer and filler to form a first masterbatch, adding additional polymer to the first masterbatch, and mixing the additional polymer and the first masterbatch.

US Patent:

7951876, May 31, 2011

Filed:

Mar 16, 2007

Appl. No.:

11/724796

Inventors:

Georg G. A. Böhm - Akron OH, US
William L. Hergenrother - Akron OH, US
Christine M. Rademacher - Akron OH, US
Christopher G. Robertson - Akron OH, US

Assignee:

Bridgestone Corporation

International Classification:

C08C 19/00
C08C 19/22
C08C 19/25
C08C 19/26
C08C 19/30
C08F 36/04

US Classification:

5253319, 5253323, 5253329, 5253332, 525342, 5253591, 525242, 525267, 525280, 525314, 526335, 526340

Abstract:

A multi-functional polymer defined by the formula(Q-R—Z—P—Ywhere (Q-R)is a functionality cluster, Q is a functional group, R is a multi-valent organic group, Pis a long-chain polymer, n is an integer from about 2 to about 10, Y is a proton, a weak functional group, or a selective functional group, and Z is a branch point where the functionality clusters join the long-chain polymer.

US Patent:

8071671, Dec 6, 2011

Filed:

Oct 29, 2008

Appl. No.:

12/260393

Inventors:

Terrence E. Hogan - Akron OH, US
Christopher G. Robertson - Akron OH, US
Alberto Scurati - Milan, IT

Assignee:

Bridgestone Corporation - Tokyo

International Classification:

B60C 1/00
C08K 3/04

US Classification:

524495, 524496

Abstract:

A process for forming a tire component, the process comprising the steps of introducing a vulcanizable polymer, a curative, a first carbon black characterized by an iodine adsorption number, per ASTM D1510, that is greater than 60 g/kg, and a second carbon black characterized by an iodine adsorption number, per ASTM D1510, that is less than 60 g/kg to form a vulcanizable composition, fabricating a tire component from the vulcanizable composition, and curing the tire component.

US Patent:

8101697, Jan 24, 2012

Filed:

Feb 1, 2006

Appl. No.:

11/344660

Inventors:

James H. Pawlow - Akron OH, US
Takayuki Yako - Kodaira, JP
Jason T. Poulton - Akron OH, US
Sandra Warren - Massillon OH, US
Christopher Robertson - Akron OH, US

Assignee:

Bridgestone Corporation - Tokyo

International Classification:

C08F 230/08
C08F 4/80
C08L 43/00
C07F 15/00

US Classification:

526240, 526 75, 526171, 526279, 526280, 526281, 526283, 526308, 525201, 525209, 525216

Abstract:

A method for preparing multi-functional high-trans elastomeric polymers that have various applications such as in vulcanizable rubber compositions, moisture curable resin compositions, as well as other areas.

US Patent:

8119736, Feb 21, 2012

Filed:

Oct 5, 2007

Appl. No.:

12/444463

Inventors:

Christopher G. Robertson - Akron OH, US
Sandra Warren - Gradignan, FR
James Hall - Mogadore OH, US
Georg G. A. Böhm - Akron OH, US
Mark Arigo - Hudson OH, US
Noriko Mori - Tokyo, JP

Assignee:

Bridgestone Corporation - Tokyo

International Classification:

C08G 63/48
C08G 63/91
C08L 31/02
C08L 9/00

US Classification:

525 70, 525 80, 525 83, 525 84, 525 86, 525 87

Abstract:

Branched polymers including multi-branched polymers, functionalized branched polymers, star-branched polymers, and dendigraft polymers. Methods for the synthesis of branched polymers and method for the use of branched polymers in tire components are also included.

US Patent:

8138248, Mar 20, 2012

Filed:

Dec 31, 2008

Appl. No.:

12/347397

Inventors:

Kevin McCauley - Coventry Township OH, US
Terrence E. Hogan - Akron OH, US
Christopher G. Robertson - Marlborough MA, US
Amy M. Randall - Akron OH, US

Assignee:

Bridgestone Corporation - Tokyo

International Classification:

C08K 5/00

US Classification:

524108, 524336, 524387

Abstract:

A method for preparing a polymeric composition, the method comprising providing a polymer cement including a polymer and a solvent, introducing an acetal or ketal of an alditol with the polymer cement, and isolating at least a portion of the polymer and the acetal or ketal of an alditol from the solvent to provide a polymeric composition including the polymer and the acetal or ketal of an alditol.