Patents by Inventor Robert Norman Webb
Robert Norman Webb has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8461240Abstract: 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.Type: GrantFiled: April 30, 2010Date of Patent: June 11, 2013Assignee: ExxonMobil Chemical Patents Inc.Inventors: Weiqing Weng, Michael Brendan Rodgers, John Patrick Soisson, Molly Westermann Johnston, Robert Norman Webb
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Patent number: 8354473Abstract: The invention discloses improved processes to halogenate polymers. In particular, the invention discloses to improved processes to halogenate polymers made from C4-1012 isoolefins.Type: GrantFiled: February 11, 2011Date of Patent: January 15, 2013Assignee: ExxonMobil Chemical Patents Inc.Inventors: David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb, Richard Dwight Hembree
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Publication number: 20110265927Abstract: 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.Type: ApplicationFiled: April 30, 2010Publication date: November 3, 2011Inventors: Weiqing Weng, Michael Brendan Rodgers, John Patrick Soisson, Molly Westermann Johnston, Robert Norman Webb
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Publication number: 20110136987Abstract: The invention discloses improved processes to halogenate polymers. In particular, the invention discloses to improved processes to halogenate polymers made from C4-1012 isoolefins.Type: ApplicationFiled: February 11, 2011Publication date: June 9, 2011Inventors: David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb, Richard Dwight Hembree
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Patent number: 7910662Abstract: The invention discloses improved processes to halogenate polymers. In particular, the invention discloses to improved processes to halogenate polymers made from C4-1012 isoolefins.Type: GrantFiled: December 28, 2005Date of Patent: March 22, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb, Richard Dwight Hembree
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Publication number: 20110060086Abstract: A copolymer is formed from an isoolefin having from 4 to 7 carbon atoms and an alkylstyrene. The copolymer has a substantially homogeneous compositional distribution. The copolymer has from about 8 to about 12 wt % of alkylstyrene and at least 85 wt % of isoolefin. The copolymer is preferably halogenated with about 1.1 to about 1.5 wt % of a halogen. The copolymer may in elastomeric nanocomposites. To obtain a good dispersion of the nanoclay in a formulated compound, at least one cure accelerator is selected from the group consisting of mercaptobenzothiazole disulfide, mercaptobenzothiazole, cyclohexyl benzothiazole disulfide, dibutyl thiourea, tetramethylthiuram disulfide, 4-4-dithiodimropholine, zinc dimethyldithiocarbamate, and zinc dibutylphosphorodithiate.Type: ApplicationFiled: August 23, 2010Publication date: March 10, 2011Inventors: Michael Brendan Rodgers, Weiqing Weng, John Patrick Soisson, Robert Norman Webb, Sunny Jacob
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Patent number: 7781547Abstract: 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.Type: GrantFiled: June 25, 2004Date of Patent: August 24, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Yuan-Ju (Ray) Chen, Michael Francis McDonald, Timothy Daniel Shaffer, David Yen-Lung Chung, Robert Norman Webb
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Patent number: 7723447Abstract: The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent.Type: GrantFiled: December 19, 2003Date of Patent: May 25, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Scott Thomas Milner, Michael Gerard Matturro, Timothy Daniel Shaffer, Robert Norman Webb, David Yen-Lung Chung, Michael Francis McDonald
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Patent number: 7501460Abstract: 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 (10) of butyl rubber in an organic solvent with a halogen (12) to form a halogenated butyl rubber solution (16); (b) neutralizing the halogenated butyl rubber solution; (c) functionalizing at least a portion (18) of the halogenated butyl rubber; (d) mixing a dispersion (22) of clay with the functionalized butyl rubber (18) to form a masterbatch (26) comprising a polymer-clay nanocomposite; (e) combining the masterbatch (26) with the rest of the halogenated butyl rubber solution (20) to form a second mixture (28); (e) recovering the nanocomposite from the second mixture (28). The nanocomposite so formed has improved air barrier properties and is suitable for use as a tire innerliner or innertube.Type: GrantFiled: July 18, 2005Date of Patent: March 10, 2009Assignee: ExxonMobile Chemical Patents Inc.Inventors: Weiqing Weng, Caiguo Gong, Anthony Jay Dias, Robert Norman Webb, James Peter Stokes
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Publication number: 20080290049Abstract: The invention relates to methods for separating slurry components. In particular, the invention relates to the concentration of polymer particles in a slurry from the polymerization of C4-C7 isoolefins.Type: ApplicationFiled: June 23, 2004Publication date: November 27, 2008Inventors: Timothy Daniel Shaffer, Scott Thomas Milner, David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb, Pamela Jean Wright
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Publication number: 20080293892Abstract: The invention discloses improved processes to halogenate polymers. In particular, the invention discloses to improved processes to halogenate polymers made from C4-1012 isoolefins.Type: ApplicationFiled: December 28, 2005Publication date: November 27, 2008Inventors: David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb, Richard Dwight Hembree
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Patent number: 7423100Abstract: The invention provides for polymerization processes to produce polymers utilizing boiling pool reactor systems and diluents including hydrofluorocarbons.Type: GrantFiled: December 19, 2003Date of Patent: September 9, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Michael Francis McDonald, Scott Thomas Milner, Timothy Daniel Shaffer, Robert Norman Webb
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Patent number: 7414101Abstract: The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent.Type: GrantFiled: May 22, 2007Date of Patent: August 19, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Timothy Daniel Shaffer, Scott Thomas Milner, Michael Gerard Matturro, David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb
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Publication number: 20080103272Abstract: 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.Type: ApplicationFiled: June 25, 2004Publication date: May 1, 2008Inventors: Yuan-Ju ( Ray) Chen, Michael Francis McDonald, Timothy Daniel Shaffer, David Yen-Lung Chung, Robert Norman Webb
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Patent number: 7232872Abstract: The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent.Type: GrantFiled: December 19, 2003Date of Patent: June 19, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Timothy Daniel Shaffer, Scott Thomas Milner, Michael Gerard Matturro, David Yen-Lung Chung, Michael Francis McDonald, Robert Norman Webb
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Patent number: 7214750Abstract: The invention relates to new processes to produce polymers utilizing bayonette cooled slurry reactor systems and diluents including hydrofluorocarbons.Type: GrantFiled: December 19, 2003Date of Patent: May 8, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Michael Francis McDonald, Scott Thomas Milner, Timothy Daniel Shaffer, Robert Norman Webb
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Patent number: 6858690Abstract: The invention relates to a new catalyst system that improves the heat transfer capability of a butyl reactor slurry process system in the production of isobutylene-based polymers in continuous slurry polymerization processes. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar diluent along with a Lewis acid and a C5 or greater initiator having a tertiary halide.Type: GrantFiled: July 25, 2003Date of Patent: February 22, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Robert Norman Webb, Michael Francis McDonald, David Yen-Lung Chung, Yuan-Ju Chen, Richard Dwight Hembree, John Patrick Soisson
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Publication number: 20040059076Abstract: The invention relates to a new catalyst system that improves the heat transfer capability of a butyl reactor slurry process system in the production of isobutylene-based polymers in continuous slurry polymerization processes. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar diluent along with a Lewis acid and a C5 or greater initiator having a tertiary halide.Type: ApplicationFiled: July 25, 2003Publication date: March 25, 2004Inventors: Robert Norman Webb, Michael Francis McDonald, David Yen-Lung Chung, Yuan-Ju Chen, Richard Dwight Hembree, John Patrick Soisson