Yaohong Chen

US Patent:

7964693, Jun 21, 2011

Filed:

Dec 29, 2006

Appl. No.:

12/094005

Inventors:

Joseph P. Kennedy - Akron OH, US
Yaohong Chen - Fairlawn OH, US

Assignee:

The University of Akron - Akron OH

International Classification:

C08G 77/12

US Classification:

528 31, 528 25

Abstract:

The present invention generally relates to pre-polymer and polymer compositions that can be photopolymerized. In one embodiment, the present invention relates to crosslinking agents that can be used in the photopolymerization of the pre-polymers and polymers disclosed herein. In another embodiment, the present invention relates to processes for producing pre-polymer, polymer and crosslinking compositions useful in photopolymerization reaction schemes. In one instance, the pre-polymers and polymers of the present invention can be crosslinked via a suitable crosslinking agent to produce networks (e. g. , amphiphilic networks and/or co-networks).

US Patent:

8314183, Nov 20, 2012

Filed:

Dec 22, 2008

Appl. No.:

12/340850

Inventors:

Yaohong Chen - Akron OH, US

Assignee:

Bridgestone Corporation - Tokyo

International Classification:

C08F 8/42
C08F 8/30
C08F 4/48

US Classification:

525102, 5253261, 5253329, 525342

Abstract:

A functionalized polymer includes a directly bonded moiety, which can be located at a terminus of the polymer, defined by the formula CRRNH—O—]—Si where each Rand Rindependently is a substituted or unsubstituted hydrocarbyl group and where the Si atom can be bonded through similar moieties to up to three other polymers and/or to the appropriate number of non-interfering groups. The polymer can be provided by introducing a ketoximesilane compound into a system that includes carbanionic (living) polymer. Such polymers can be used in the production of compositions that include particulate fillers.

US Patent:

8329297, Dec 11, 2012

Filed:

Dec 1, 2009

Appl. No.:

12/628527

Inventors:

William L. Hergenrother - Akron OH, US
Yaohong Chen - Akron OH, US

Assignee:

Bridgestone Corporation - Tokyo

International Classification:

B32B 5/16
B60C 5/00
C08G 18/08
C08G 73/10

US Classification:

428405, 152450, 524714, 524847

Abstract:

The invention provides vulcanizable rubber compound having improved tensile mechanical and dynamic viscoelastic properties. The compounds are formed by mixing an elastomer, containing unsaturated carbon-carbon bonds in its molecular structure, with a reinforcing inorganic filler silica in the presence of an alkyl alkoxysilane and a non-sulfur coupling agent that binds to the rubber backbone with an “ene” linkage or a 1,3 dipolar addition linkage. In particular, the coupling agent and the alkyl alkoxysilane are present in the compound in a weight ratio of about 0. 0001:1 to about 1:1.

US Patent:

8597790, Dec 3, 2013

Filed:

Dec 10, 2012

Appl. No.:

13/709756

Inventors:

- Tokyo, JP
Yaohong Chen - Akron OH, US

Assignee:

Bridgestone Corporation - Tokyo

International Classification:

B32B 5/16
B60C 5/00
C08G 18/08
C08G 73/10

US Classification:

428405, 152450, 524714, 524847

Abstract:

The invention provides vulcanizable rubber compound having improved tensile mechanical and dynamic viscoelastic properties. The compounds are formed by mixing an elastomer, containing unsaturated carbon-carbon bonds in its molecular structure, with a reinforcing inorganic filler silica in the presence of an alkyl alkoxysilane and a non-sulfur coupling agent that binds to the rubber backbone with an “ene” linkage or a 1,3 dipolar addition linkage. In particular, the coupling agent and the alkyl alkoxysilane are present in the compound in a weight ratio of about 0. 0001:1 to about 1:1.

US Patent:

20080097024, Apr 24, 2008

Filed:

Oct 5, 2007

Appl. No.:

11/973234

Inventors:

Yaohong Chen - Akron OH, US

International Classification:

C08G 77/06
C08K 3/36

US Classification:

524588000, 528010000

Abstract:

A polymer including a functional group, where the polymer is defined by the formula where Ris a monovalent organic group, each Ris independently a monovalent organic group, Ris a divalent organic group, Ris a bond, a divalent organic group, or a divalent organic group including a functional group, π is a polymer chain, m is an integer from 1 to about 25, and n is an integer from 1 to 4.

US Patent:

20110213066, Sep 1, 2011

Filed:

Apr 5, 2010

Appl. No.:

12/754367

Inventors:

Xiaorong Wang - Hudson OH, US
Hideki Kitano - Tokyo, JP
James H. Pawlow - Akron OH, US
Christopher G. Robertson - Akron OH, US
Yaohong Chen - Akron OH, US

International Classification:

C08F 271/02
C08F 279/02
C08L 53/02
B82B 1/00

US Classification:

524505, 525314, 525280, 977773

Abstract:

Compositions and methods are included for preparing a hairy polymeric nanoparticle including first and second shell block polymer arms are at least partially phase-separated and surround a polymeric core. One type of polymeric arm can have a greater polarity than the other type(s) of polymeric arms. A rubber composition including the hairy nanoparticles is also provided.

US Patent:

20110236686, Sep 29, 2011

Filed:

Dec 28, 2010

Appl. No.:

12/979719

Inventors:

Hideki Kitano - Tokyo, JP
Yaohong Chen - Akron OH, US

International Classification:

B32B 5/16
C08F 2/06
C08F 8/00
C08F 2/38
B82Y 99/00
B82B 3/00

US Classification:

428402, 526 89, 526204, 526209, 526217, 526193, 526222, 525 55, 526 82, 977773, 977897

Abstract:

A method is provided for making nanoparticles, including the steps of: combining a hydrocarbon solvent and an aprotic, polar co-solvent, a mono-vinyl aromatic monomer, polymerization initiator, a solution stabilizer, and a first charge of a cross-linking agent. Subsequently, a second charge of cross-linking agent is added. The nanoparticles have an average diameter of 5 nanometers to about 10,000 nanometers. Spherical nanoparticles are also provided that include a cross-linking agent comprising 30% to 60% by weight of the combined weight of a mono-vinyl aromatic species and the cross-linking agent. The spherical nanoparticles also meet the following equation:

US Patent:

20120132346, May 31, 2012

Filed:

Dec 29, 2009

Appl. No.:

13/142770

Inventors:

Yaohong Chen - Akron OH, US
Mindaugas Rackaitis - Massillon OH, US
Xiaorong Wang - Hudson OH, US
Hideki Kitano - Tokyo, JP

International Classification:

B29D 30/00
C08L 21/00
C08F 8/00
B82Y 30/00

US Classification:

1561101, 525 55, 525242, 5253329, 525298, 525386, 525232, 977773

Abstract:

A method is provided for synthesizing a core-shell nanoparticle that includes the following steps: providing a polymeric seed (in a solvent) that includes a mono-vinyl monomer cross-linked with a cross-linking agent to form the core of the nanoparticle, the core has an average diameter of from about nanometers to about 10,000 nanometers, and the core has polymer chains with living ends; adding a stabilizer to stabilize the seed and prevent the seed from precipitating out of solution; and grafting a shell species onto the living ends of the core to form the shell of the nanoparticle. A core-first synthesized nanoparticle, along with a rubber composition and tire product are also provided.