Patents by Inventor Sharon Guo
Sharon Guo 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: 11421052Abstract: A process for producing a crosslinked polymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A process for producing a hydroxylated unsaturated isoolefin copolymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A hydroxylated unsaturated isoolefin copolymer having hydroxyl groups in endo configurations may be produced thereby.Type: GrantFiled: October 22, 2020Date of Patent: August 23, 2022Assignee: ARLANXEO SINGAPORE PTE. LTD.Inventors: Paul Nguyen, Treena Crockett, Gregory J. E. Davidson, Sharon Guo
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Patent number: 11001648Abstract: A process for producing a crosslinked polymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A process for producing a hydroxylated unsaturated isoolefin copolymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A hydroxylated unsaturated isoolefin copolymer having hydroxyl groups in endo configurations may be produced thereby.Type: GrantFiled: December 14, 2016Date of Patent: May 11, 2021Assignee: ARLANXEO Singapore Pte. Ltd.Inventors: Paul Nguyen, Treena Crockett, Gregory J. E. Davidson, Sharon Guo
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Publication number: 20210040243Abstract: A process for producing a crosslinked polymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A process for producing a hydroxylated unsaturated isoolefin copolymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A hydroxylated unsaturated isoolefin copolymer having hydroxyl groups in endo configurations may be produced thereby.Type: ApplicationFiled: October 22, 2020Publication date: February 11, 2021Inventors: Paul NGUYEN, Treena CROCKETT, Gregory J.E. DAVIDSON, Sharon GUO
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Patent number: 10865299Abstract: A polyisoolefin-based polymer composition having a multimodal molecular weight distribution is described, which can be prepared by the late addition of a chain transfer agent to the polymerization process. The polymer composition has a low molecular weight fraction having a peak molecular weight (Mp) of less than about 100,000 g/mol and a high molecular weight fraction having a peak molecular weight (Mp) of greater than about 250,000 g/mol, the low molecular weight fraction present in the composition in an amount less than the high molecular weight fraction. Cured articles produced from the polyisoolefin-based polymer composition exhibit improved processability while maintaining physical properties.Type: GrantFiled: September 28, 2017Date of Patent: December 15, 2020Assignee: ARLANXEO CANADA INC.Inventors: Sharon Guo, Gregory J. E. Davidson, Brianna Binder
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Patent number: 10822439Abstract: A process for producing an allylic alcohol functionalized butyl rubber involves contacting an epoxidized butyl rubber with benzoic acid, an analogue of benzoic acid or a C1-C7 alkanoic acid. The process and a polymer compound comprising the epoxidized butyl rubber and the benzoic acid, analogue of benzoic acid or a C1-C7 alkanoic acid provide a cost effective route to a polar functionalized butyl rubber, particularly to butyl rubber comprising allylic alcohol functional groups.Type: GrantFiled: December 14, 2016Date of Patent: November 3, 2020Assignee: ARLANXEO SINGAPORE PTE. LTD.Inventors: Sarah Elliott, Gregory J. E. Davidson, Sharon Guo
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Patent number: 10781301Abstract: A polymer composition is provided with a multi-modal molecular weight distribution of a halo-containing polymer. The halo-containing polymer is has multi-functional phosphine linkages at less than 10% of halo sites of the halo-containing polymer that were available before multi-functional phosphine linking. A process for producing a polymer composition having a multi-modal molecular weight distribution involves dispersing a multi-functional phosphine compound in a halo-containing polymer, the halo-containing polymer comprising a total number of available halo sites, and reacting the multi-functional phosphine compound with the halo-containing polymer at an elevated temperature to produce the polymer composition in which less than 10% of the total number of available halo sites are reacted with the phosphine compound to provide multi-functional phosphine linkages in the halo-containing compound.Type: GrantFiled: April 7, 2017Date of Patent: September 22, 2020Assignee: ARLANXEO Singapore Pte. Ltd.Inventors: Mark Ingratta, Sharon Guo, Phil Magill, Gregory J. E. Davidson
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Patent number: 10774158Abstract: A process for epoxidation of an unsaturated polymer involves mixing an unsaturated polymer and a peroxy acid in an absence of solvent to produce an epoxidized polymer. The process may require no solvent, require no catalyst, require no or little applied external heat input, require no applied cooling, require less epoxidation agent, be faster and/or result in more efficient conversion of the unsaturated polymer.Type: GrantFiled: December 14, 2016Date of Patent: September 15, 2020Assignee: ARLANXEO SINGAPORE PTE. LTD.Inventors: Brianna Binder, Sarah Elliott, Gregory J. E. Davidson, Sharon Guo
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Publication number: 20200048447Abstract: A polyisoolefin-based polymer composition having a multimodal molecular weight distribution is described, which can be prepared by the late addition of a chain transfer agent to the polymerization process. The polymer composition has a low molecular weight fraction having a peak molecular weight (Mp) of less than about 100,000 g/mol and a high molecular weight fraction having a peak molecular weight (Mp) of greater than about 250,000 g/mol, the low molecular weight fraction present in the composition in an amount less than the high molecular weight fraction. Cured articles produced from the polyisoolefin-based polymer composition exhibit improved processability while maintaining physical properties.Type: ApplicationFiled: September 28, 2017Publication date: February 13, 2020Inventors: Sharon GUO, Gregory J. E. DAVIDSON, Brianna BINDER
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Publication number: 20190136020Abstract: A polymer composition is provided with a multi-modal molecular weight distribution of a halo-containing polymer. The halo-containing polymer is has multi-functional phosphine linkages at less than 10% of halo sites of the halo-containing mer that were available before multi-functional phosphine linking. A process for producing a polymer composition having a multi-modal molecular weight distribution involves dispersing a multi-functional phosphine compound in a halo-containing polymer, the halo-containing polymer comprising a total number of available halo sites, and reacting the multi-functional phosphine compound with the halo-containing polymer at an elevated temperature to produce the polymer composition in which less than 10% of the total number of available halo sites are reacted with the phosphine compound to provide multi-functional phosphine linkages in the halo-containing compound.Type: ApplicationFiled: April 7, 2017Publication date: May 9, 2019Inventors: Mark INGRATTA, Sharon GUO, Phil MAGILL, Gregory J.E. DAVIDSON
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Publication number: 20190077889Abstract: A process for producing a crosslinked polymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A process for producing a hydroxylated unsaturated isoolefin copolymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A hydroxylated unsaturated isoolefin copolymer having hydroxyl groups in endo configurations may be produced thereby.Type: ApplicationFiled: December 14, 2016Publication date: March 14, 2019Applicant: ARLANXEO Singapore Pte. Ltd.Inventors: Paul NGUYEN, Treena CROCKETT, Gregory J. E. DAVIDSON, Sharon GUO
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Publication number: 20190002597Abstract: A process for epoxidation of an unsaturated polymer involves mixing an unsaturated polymer and a peroxy acid in an absence of solvent to produce an epoxidized polymer. The process may require no solvent, require no catalyst, require no or little applied external heat input, require no applied cooling, require less epoxidation agent, be faster and/or result in more efficient conversion of the unsaturated polymer.Type: ApplicationFiled: December 14, 2016Publication date: January 3, 2019Applicant: ARLANXEO Singapore Pte. Ltd.Inventors: Brianna BINDER, Sarah ELLIOTT, Gregory J.E. DAVIDSON, Sharon GUO
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Publication number: 20180362683Abstract: A process for producing an allylic alcohol functionalized butyl rubber involves contacting an epoxidized butyl rubber with benzoic acid, an analogue of benzoic acid or a C1-C7 alkanoic acid. The process and a polymer compound comprising the epoxidized butyl rubber and the benzoic acid, analogue of benzoic acid or a C1-C7 alkanoic acid provide a cost effective route to a polar functionalized butyl rubber, particularly to butyl rubber comprising allylic alcohol functional groups.Type: ApplicationFiled: December 14, 2016Publication date: December 20, 2018Applicant: ARLANXEO Singapore Pte. Ltd.Inventors: Sarah ELLIOTT, Gregory J.E. DAVIDSON, Sharon GUO
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Patent number: 9371403Abstract: This invention relates to a process for the hydrogenation of diene-based copolymers in the presence of catalysts on specific carrier materials containing at least one hyper-branched polymer.Type: GrantFiled: July 27, 2011Date of Patent: June 21, 2016Assignee: LANXESS Deutschland GmbHInventors: Matthias Soddemann, Sharon Guo, Zhenli Wei
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Patent number: 8895671Abstract: The present invention provides a vulcanizable composition containing a specific hydrogenated nitrile rubber, at least one cross-linking agent and carbon nanotubes, a process for preparing such composition and the use thereof for preparing vulcanizates. Said vulcanizates exhibit excellent heat performance, oil resistance and mechanical strength.Type: GrantFiled: June 19, 2009Date of Patent: November 25, 2014Assignee: LANXESS Deutschland GmbHInventors: Christopher Ong, Stephen Pask, Sharon Guo, Yong Zhang, Lan Lu
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Patent number: 8815984Abstract: An elastomeric composition containing a rubber polymer, an acid acceptor, and a silane-modified needle-like/acircular mineral additive. Compositions according to the present invention have superior heat resistance, compression set resistance, and improved processability (lower compound Mooney) compared to known rubber compositions.Type: GrantFiled: September 11, 2009Date of Patent: August 26, 2014Assignee: LANXESS Inc.Inventors: Victor Nasreddine, Sharon Guo
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Publication number: 20130331524Abstract: This invention relates to a process for the hydrogenation of diene-based copolymers in the presence of catalysts on specific carrier materials containing at least one hyper-branched polymer.Type: ApplicationFiled: July 27, 2011Publication date: December 12, 2013Applicant: LANXESS DEUTSCHLAND GMBHInventors: Matthias Soddemann, Sharon Guo, Zhenli Wei
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Publication number: 20130261246Abstract: The present invention provides a vulcanizable composition containing a specific hydrogenated nitrile rubber, at least one cross-linking agent and carbon nanotubes, a process for preparing such composition and the use thereof for preparing vulcanizates. Said vulcanizates exhibit excellent heat performance, oil resistance and mechanical strength.Type: ApplicationFiled: June 19, 2009Publication date: October 3, 2013Applicant: LANXESS DEUTSCHLAND GMBHInventors: Christopher Ong, Stephen Pask, Sharon Guo, Yong Zhang, Lan Lu
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Publication number: 20110251320Abstract: An elastomeric composition containing a rubber polymer, an acid acceptor, and a silane-modified needle-like/acircular mineral additive. Compositions according to the present invention have superior heat resistance, compression set resistance, and improved processability (lower compound Mooney) compared to known rubber compositions.Type: ApplicationFiled: September 11, 2009Publication date: October 13, 2011Applicant: LANXESS INC.Inventors: Victor Nasreddine, Sharon Guo
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Patent number: 7741392Abstract: The present invention relates to an elastomer rubber composition containing a carboxylated rubber polymer and a fluorinated additive. The present invention is also directed to an elastomer composition containing a hydrogenated carboxylated nitrile rubber and a fluorinated additive.Type: GrantFiled: February 23, 2006Date of Patent: June 22, 2010Assignee: LANXESS Inc.Inventors: Victor Nasreddine, Lorenzo Ferrari, Sharon Guo
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Patent number: 7666950Abstract: The present invention provides a novel process for preparing hydrogenated nitrile rubbers comprising subjecting nitrile rubbers in a spinning disk reactor to hydrogenation. The present process is less demanding with regard to its reaction conditions, like e.g. the hydrogen pressure to be applied, compared to known processes and significantly reduces the cost of the hydrogenation process and in particular the equipment cost.Type: GrantFiled: May 29, 2007Date of Patent: February 23, 2010Assignee: LANXESS Deutschland GmbHInventors: Christopher M. Ong, Stephen Pask, Sharon Guo, Franz Mersmann