Patents by Inventor Walter Harvey Waddell
Walter Harvey Waddell 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: 8283407Abstract: The invention provides for processes to produce elastomeric compositions, the processes including contacting at least one elastomer with a processing aid, wherein the processing aid includes the reaction product of at least one functionalized polymer having at least one anhydride group contacted with at least one polyamine, wherein the at least one polyamine includes at least one primary amine. The invention also provides for articles such as innerliners for tires produced from the aforementioned elastomeric compositions.Type: GrantFiled: December 16, 2005Date of Patent: October 9, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Walter Harvey Waddell, David Yen-Lung Chung, Robert Christopher Napier, Donald Sheley Tracey
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Patent number: 8247496Abstract: The invention provides for processes to produce elastomeric compositions, the processes including contacting at least one elastomer with a processing aid, wherein the processing aid comprises at least one functionalized polymer having at least one halogen group. The invention also provides for articles such as innerliners for tires produced from the aforementioned elastomeric compositions.Type: GrantFiled: December 5, 2005Date of Patent: August 21, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Walter Harvey Waddell, David Yen-Lung Chung, Robert Christopher Napier, Donald Sheley Tracey
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Patent number: 7960454Abstract: The invention provides for processes to produce elastomeric compositions, the processes including contacting at least one elastomer with a processing aid, wherein the processing aid comprises at least one functionalized polymer having at least one anhydride group. The invention also provides for articles such as innerliners for tires produced from the aforementioned elastomeric compositions.Type: GrantFiled: December 16, 2005Date of Patent: June 14, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Walter Harvey Waddell, David Yen-Lung Chung, Robert Christopher Napier, Donald Sheley Tracey, Dirk Frans Rouckhout
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Patent number: 7905263Abstract: The present invention provides an elastomeric composition processable in a curable, filled rubber formulation. The composition comprises a halogenated interpolymer of a C4 to C7 isoolefin and from 3 to 20 weight percent alkylstyrene and comprising from 0.2 to 2 mole percent haloalkylstyrene, a Mooney viscosity less than 37, 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.Type: GrantFiled: December 29, 2005Date of Patent: March 15, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Mun Fu Tse, Dirk Frans Rouckhout, Donald Sheley Tracey, Walter Harvey Waddell
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Patent number: 7659355Abstract: The invention relates to novel air barriers made from elastomeric compositions. In particular, the invention relates to novel air barriers such as innerliners, air sleeves, and innertubes made from novel C4 to C7 isoolefin based polymers with new sequence distributions or that are substantially free of long chain branching.Type: GrantFiled: June 13, 2005Date of Patent: February 9, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Walter Harvey Waddell, David Yen-Lung Chung
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Patent number: 7659337Abstract: A composition suitable for an air barrier such as an automotive tire innertube, innerliner, and aircraft tire innertube or innerliner, curing bladders, and other pneumatic devices is disclosed. The composition comprises an elastomer, a processing oil, and a grafted resin component.Type: GrantFiled: October 1, 2007Date of Patent: February 9, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Glenn Edward Jones, Mun Fu Tse, Hsien-Chang Wang, Kenneth Lewtas, William Moa-Tseng Chien, Walter Harvey Waddell
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Publication number: 20090000718Abstract: Improved air barrier compositions using alternative processing oils are disclosed that reduce the air permeability of the innerliner compound without affecting other properties such as cure, processing, and other physical properties.Type: ApplicationFiled: June 28, 2007Publication date: January 1, 2009Inventors: Dirk Frans Rouckhout, Walter Harvey Waddell
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Publication number: 20080319119Abstract: The invention provides for processes to produce elastomeric compositions, the processes including contacting at least one elastomer with a processing aid, wherein the processing aid includes the reaction product of at least one functionalized polymer having at least one anhydride group contacted with at least one polyamine, wherein the at least one polyamine includes at least one primary amine. The invention also provides for articles such as innerliners for tires produced from the aforementioned elastomeric compositions.Type: ApplicationFiled: December 16, 2005Publication date: December 25, 2008Applicant: EXXONMOBIL CHEMICAL PATENTS INC.Inventors: Walter Harvey Waddell, David Yen-Lung Chung, Robert Christopher Napier, Donald Sheley Tracey
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Publication number: 20080281021Abstract: The invention provides for processes to produce elastomeric compositions, the processes including contacting at least one elastomer with a processing aid, wherein the processing aid comprises at least one functionalized polymer having at least one anhydride group. The invention also provides for articles such as innerliners for tires produced from the aforementioned elastomeric compositions.Type: ApplicationFiled: December 16, 2005Publication date: November 13, 2008Applicant: EXXONMOBIL CHEMICAL PATNES INC.Inventors: Walter Harvey Waddell, David Yen-Lung Chung, Robert Christopher Napier, Donald Sheley Tracey, Dirk Frans Rouckhout
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Publication number: 20080262130Abstract: The invention provides for processes to produce elastomeric compositions, the processes including contacting at least one elastomer with a processing aid, wherein the processing aid comprises at least one functionalized polymer having at least one halogen group. The invention also provides for articles such as innerliners for tires produced from the aforementioned elastomeric compositions.Type: ApplicationFiled: December 5, 2005Publication date: October 23, 2008Inventors: Walter Harvey Waddell, David Yen-Lung Chung, Robert Christopher Napier, Donald Sheley Tracey
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Publication number: 20080188592Abstract: The invention includes select blends of elastomeric compositions of at least one halogenated elastomer and at least one other elastomer to impart certain properties to articles made from those select blends. For example, the at least one halogenated elastomer may be at least one halogenated butyl rubber, at least one halogenated star-branched butyl rubber, or at least one halogenated random copolymer of a C4 to C7 isomonoolefin derived unit, such as an isobutylene derived unit, and at least one other polymerizable unit, such as methylstyrene. The invention also includes methods to improve the brittleness point of articles made from those select blends.Type: ApplicationFiled: September 30, 2005Publication date: August 7, 2008Inventors: Walter Harvey Waddell, Donald Sheley Tracey, Glenn Edward Jones
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Patent number: 7385008Abstract: The present invention includes elastomeric compositions of BIMS elastomers suitable for abrasion resistant, high traction and/or air barrier articles. The compositions and articles made from those compositions of the invention can be described in any number of embodiments. In one embodiment, the composition suitable for an abrasion resistant article includes from 5 to 100 phr of a terpolymer of C4 to C7 isoolefin derived units, p-alkylstyrene derived units and p-bromomethylstyrene derived units; at least one filler such as carbon black, silica, precipitated silica, clay, or combinations thereof, and from 0.1 to 3 phr of at least one thiourea. The composition can also include from 5 to 80 phr of at least one elastomer selected from natural rubbers, polyisoprene rubber, styrene butadiene rubber (SBR), polybutadiene rubber, isoprene butadiene rubber (IBR), styrene-isoprene-butadiene rubber (SIBR), butyl rubber, halogenated butyl rubber, butadiene-acrylonitrile-styrene rubber (SNBR), and mixtures thereof.Type: GrantFiled: October 12, 2007Date of Patent: June 10, 2008Assignee: ExxonMobile Chemical Patents Inc.Inventors: Walter Harvey Waddell, Robert Ryan Poulter
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Patent number: 7329697Abstract: The present invention includes compositions suitable for tire treads or sidewalls and other articles where abrasion resistance and flexibility are desirable. The invention includes a tire tread or sidewall made by combining a filler; a sulfur cure system; optionally at least one secondary rubber; and at least one halogenated terpolymer of C4 to C8 isoolefin derived units, C4 to C14 multiolefin derived units, and p-alkylstyrene derived units. Examples of suitable fillers include carbon black, silica, and combinations thereof. The present invention also includes a method of producing an elastomeric terpolymer composition comprising combining in a diluent C4 to C8 isoolefin monomers, C4 to C14 multiolefin monomers, and p-alkylstyrene monomers in the presence of a Lewis acid and at least one initiator to produce the terpolymer.Type: GrantFiled: December 9, 2002Date of Patent: February 12, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Walter Harvey Waddell, David Yen-Lung Chung
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Patent number: 7300981Abstract: The present invention includes elastomeric compositions of BIMS elastomers suitable for abrasion resistant, high traction and/or barrier articles. The compositions and articles made from those compositions of the inventions can be described in any number of embodiments. In one embodiment, the composition suitable for an abrasion resistant article includes from 5 to 100 phr of a terpolymer of C4 to C7 isoolefin derived units, p-alkylstyrene derived units and p-bromomehtylstyrene derived units; at least one filler such as carbon black, silica, precipitated silica, clay, or combinations thereof; and from 0.1 to 3 phr of at least one thiourea.Type: GrantFiled: February 21, 2003Date of Patent: November 27, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Walter Harvey Waddell, Robert Ryan Poulter
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Patent number: 7294664Abstract: A composition suitable for an air barrier such as an automotive tire innertube, innerliner, and aircraft tire innertube or innerliner, curing bladders, and other pneumatic devices is disclosed. The composition comprises an elastomer, a processing oil, and a grafted resin component.Type: GrantFiled: October 21, 2003Date of Patent: November 13, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Glenn Edward Jones, Mun Fu Tse, Hsien-Chang Wang, Kenneth Lewtas, William Moa-Tseng Chien, Walter Harvey Waddell
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Patent number: 7241831Abstract: The present invention includes compositions suitable for air barriers such as innerliners where adhesion to tire carcass materials (e.g., SBR) and flexibility are desirable, as well as low air permeability. The invention includes a tire innerliner made by combining a filler; a sulfur cure system; optionally at least one secondary rubber; and at least one halogenated terpolymer of C4 to C8 isoolefin derived units, C4 to C14 multiolefin derived units, and p-alkylstyrene derived units. Examples of suitable fillers include modified carbon black, carbon black, silica, exfoliated clays, and combinations thereof. The present invention also includes a method of producing an elastomeric terpolymer composition comprising combining in a diluent C4 to C8 isoolefin monomers, C4 to C14 multiolefin monomers, and p-alkylstyrene monomers in the presence of a Lewis acid and at least one initiator to produce the terpolymer.Type: GrantFiled: December 9, 2002Date of Patent: July 10, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Walter Harvey Waddell, David Yen-Lung Chung
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Publication number: 20040249085Abstract: The present invention includes an isobutylene based terpolymer suitable for air barriers such as innerliners where adhesion to tire carcass materials (e.g., SBR) and flexibility are desirable, as well as low air permeability. The terpolymer in one embodiment is a halogenated terpolymer of C4 to C8 isoolefin derived units, C4 to C14 multiolefin derived units, and p-alkylstyrene derived units. The present invention also includes a method of producing an elastomeric terpolymer composition comprising combining in a polar diluent C4 to C8 isoolefin monomers, C4 to C14 multiolefin monomers, and p-alkylstyrene monomers in the presence of a Lewis acid and at least one initiator to produce the terpolymer.Type: ApplicationFiled: May 10, 2004Publication date: December 9, 2004Inventors: Walter Harvey Waddell, David Yen-Lung Chung
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Publication number: 20040242731Abstract: The present invention includes compositions suitable for tire treads or sidewalls and other articles where abrasion resistance and flexibility are desirable. The invention includes a tire tread or sidewall made by combining a filler; a sulfur cure system; optionally at least one secondary rubber; and at least one halogenated terpolymer of C4 to C8 isoolefin derived units, C4 to C14 multiolefin derived units, and p-alkylstyrene derived units. Examples of suitable fillers include carbon black, silica, and combinations thereof. The present invention also includes a method of producing an elastomeric terpolymer composition comprising combining in a diluent C4 to C8 isoolefin monomers, C4 to C14 multiolefin monomers, and p-alkylstyrene monomers in the presence of a Lewis acid and at least one initiator to produce the terpolymer.Type: ApplicationFiled: May 10, 2004Publication date: December 2, 2004Inventors: Walter Harvey Waddell, David Yen-Lung Chung
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Publication number: 20040242795Abstract: The present invention includes compositions suitable for air barriers such as innerliners where adhesion to tire carcass materials (e.g., SBR) and flexibility are desirable, as well as low air permeability. The invention includes a tire innerliner made by combining a filler; a sulfur cure system; optionally at least one secondary rubber; and at least one halogenated terpolymer of C4 to C8 isoolefin derived units, C4 to C14 multiolefin drived units, and p-alkylstyrene derived units. Examples of suitable fillers include modified carbon black, carbon black, silica, exfoliated clays, and combinations thereof. The present invention also includes a method of producing an elastomeric terpolymer composition comprising combining in a diluent C4 to C8 isoolefin monomers, C4 to C14 multiolefin monomers, and p-alkylstyrene monomers in the presence of a Lewis acid and at least one initiator to produce the terpolymer.Type: ApplicationFiled: May 10, 2004Publication date: December 2, 2004Inventors: Walter Harvey Waddell, David Yen-Lung Chung
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Publication number: 20040092648Abstract: A composition suitable for an air barrier such as an automotive tire innertube, innerliner, and aircraft tire innertube or innerliner, curing bladders, and other pneumatic devices is disclosed. The composition comprises an elastomer, a processing oil, and a resin.Type: ApplicationFiled: October 21, 2003Publication date: May 13, 2004Inventors: Glenn Edward Jones, Mun Fu Tse, Hsien-Chang Wang, Kenneth Lewtas, William Moa-Tseng Chien, Walter Harvey Waddell