Robert Andrew Webb

US Patent:

7501460, Mar 10, 2009

Filed:

Jul 18, 2005

Appl. No.:

11/183361

Inventors:

Weiqing Weng - Houston TX, US
Caiguo Gong - Pearland TX, US
Anthony Jay Dias - Houston TX, US
Robert Norman Webb - Kingwood TX, US
James Peter Stokes - Houston TX, US

Assignee:

ExxonMobile Chemical Patents Inc. - Houston TX

International Classification:

C08J 3/20

US Classification:

523351, 524445, 524446, 524447

Abstract:

The present invention is a process to produce a nanocomposite of a elastomer and organic clay, e. g. an exfoliated clay, suitable for use as an air barrier. The process can include the steps of: (a) contacting a solution () of butyl rubber in an organic solvent with a halogen () to form a halogenated butyl rubber solution (); (b) neutralizing the halogenated butyl rubber solution; (c) functionalizing at least a portion () of the halogenated butyl rubber; (d) mixing a dispersion () of clay with the functionalized butyl rubber () to form a masterbatch () comprising a polymer-clay nanocomposite; (e) combining the masterbatch () with the rest of the halogenated butyl rubber solution () to form a second mixture (); (e) recovering the nanocomposite from the second mixture (). The nanocomposite so formed has improved air barrier properties and is suitable for use as a tire innerliner or innertube.

US Patent:

7781547, Aug 24, 2010

Filed:

Jun 25, 2004

Appl. No.:

11/628608

Inventors:

Yuan-Ju (Ray) Chen - Houston TX, US
Michael Francis McDonald - Kingwood TX, US
Timothy Daniel Shaffer - Hackettstown NJ, US
David Yen-Lung Chung - Bellaire TX, US
Robert Norman Webb - Kingwood TX, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C08F 2/14
C08F 110/10

US Classification:

526 88, 526206, 5263487, 526919

Abstract:

The invention relates to new polymerization processes using hydrofluorocarbons to produce polymers. In particular, the invention relates to new polymerization processes using turbulent flow reactor systems using diluents including one or more hydrofluorocarbon(s) to produce polymers.

US Patent:

7906600, Mar 15, 2011

Filed:

Dec 14, 2007

Appl. No.:

11/957204

Inventors:

Walter H. Waddell - Pasadena TX, US
Dirk F. Rouckhout - Linter, BE
James P. Stokes - Katy TX, US
Arthur J. Sullivan - Houston TX, US
Donald S. Tracey - Kingwood TX, US
Robert N. Webb - Kingwood TX, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C08K 3/34
C08K 9/04
C08L 67/00
C08L 101/16
C08G 63/60

US Classification:

526293, 526347, 524519, 524551, 524578

Abstract:

The present invention provides an elastomeric composition processable in a curable, filled rubber formulation. The composition comprises a halogenated interpolymer of a Cto Cisoolefin and from 3 to 20 weight percent alkylstyrene and comprising from 0. 2 to 2 mole percent haloalkylstyrene, a Mooney viscosity less than 27, a number average molecular weight less than 270,000, a weight average molecular weight less than 470,000, a z-average molecular weight less than 700,000, and a branching index (g′) from 0. 4 to 1. 1. Also disclosed are a method of making a cured, filled rubber article, comprising compounding the elastomeric composition with filler and curative, processing the compounded composition to form a shape of the article, and curing the composition to obtain the article in the formed shape, as well as a tire comprising an innerliner made by the method.

US Patent:

7910662, Mar 22, 2011

Filed:

Dec 28, 2005

Appl. No.:

12/095103

Inventors:

David Yen-Lung Chung - Bellaire TX, US
Michael Francis McDonald - Kingwood TX, US
Robert Norman Webb - Kingwood TX, US
Richard Dwight Hembree - Zachary LA, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C08F 8/22
C08C 19/14

US Classification:

5253323, 525 53, 5253331, 5253334, 5253341, 525355, 525356

Abstract:

The invention discloses improved processes to halogenate polymers. In particular, the invention discloses to improved processes to halogenate polymers made from C-10isoolefins.

US Patent:

8242236, Aug 14, 2012

Filed:

May 26, 2010

Appl. No.:

12/788164

Inventors:

John P. Soisson - Houston TX, US
Yuan-Ju (Ray) Chen - Houston TX, US
Weiqing Weng - Houston TX, US
Michael Brendan Rodgers - Seabrook TX, US
Robert N. Webb - Kingwood TX, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

B60C 1/00
B82Y 30/00
C08J 3/21

US Classification:

528490, 524447, 4284111

Abstract:

An elastomeric nanocomposite is produced from an isobutylene-based polymer and a layered nanofiller. The process of preparing the nanocomposite includes the steps of a) polymerizing isobutylene monomers and multiolefin monomers to produce an isobutylene-based polymer; b) completing at least one mass transfer dependent stage in the process wherein, after completion of the stage and prior to any recovery of the polymer, the polymer is dissolved in a solvent to create a polymer cement; c) contacting the layered nanofiller and the polymer solvent to obtain the nanocomposite; and d) recovering the nanocomposite. The layered nanofiller may be in a slurry prior to contacting with the polymer cement.

US Patent:

8354473, Jan 15, 2013

Filed:

Feb 11, 2011

Appl. No.:

13/025888

Inventors:

David Yen-Lung Chung - Bellaire TX, US
Michael Francis McDonald - Kingwood TX, US
Robert Norman Webb - Kingwood TX, US
Richard Dwight Hembree - Zachary LA, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C08F 8/22
C08C 19/14

US Classification:

5253323, 5253328, 5253331, 5253341, 525355, 525356, 5253595

Abstract:

The invention discloses improved processes to halogenate polymers. In particular, the invention discloses to improved processes to halogenate polymers made from C-10isoolefins.

US Patent:

8461240, Jun 11, 2013

Filed:

Apr 30, 2010

Appl. No.:

12/771775

Inventors:

Weiqing Weng - Houston TX, US
Michael Brendan Rodgers - Seabrook TX, US
John Patrick Soisson - Houston TX, US
Molly Westermann Johnston - Baytown TX, US
Robert Norman Webb - Kingwood TX, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C08K 5/00
C08K 3/34

US Classification:

524236, 524445

Abstract:

A nanocomposite comprising at least one elastomer and at least one nanofiller. The elastomer comprises units derived from isoolefins having from 4 to 7 carbon atoms and at least one multiolefin. The nanofiller comprise a layered filler and an amine modifier wherein the nanofiller is substantially free of any unassociated amines. By eliminating unassociated amines in the nanofiller, prior to contact with the elastomer, the nanocomposite has improved processability characteristics while maintaining desired impermeability characteristics.

US Patent:

8598261, Dec 3, 2013

Filed:

Oct 14, 2008

Appl. No.:

13/121415

Inventors:

Weiqing Weng - Houston TX, US
James P. Stokes - Katy TX, US
Molly J. Upton - Baytown TX, US
Robert N. Webb - Kingwood TX, US
Ramesh Varadaraj - Flemington NJ, US
Cornelius H. Brons - Easton PA, US
David J. Lohse - Bridgewater NJ, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C08K 3/34
C08J 5/14

US Classification:

524445, 523156

Abstract:

A process for producing a nanocomposite of a halogenated elastomer and an inorganic, exfoliated clay includes the in-situ protonation of a modifier, which may be an alkylamine, arylamine or an alkylarylamine. This process can be integrated with a polymer halogenation process. The nanocomposite so formed has improved air barrier properties and is suitable for use as a tire innerliner or innertube.