Patents by Inventor Kathy S. Collins
Kathy S. Collins 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: 8759459Abstract: Systems and methods for the maintenance of active chromium-based catalysts and their use in polymerization processes are described. In one embodiment, a system for the introduction of multiple polymerization components to activate a chromium based catalyst within a mix tank is described. Other described features may include materials and methods to purify the liquid medium of a catalyst slurry so that the catalyst slurry maintains a high level of activity. The active chromium-based catalyst may provide polyolefins with a number of desirable properties in a reliable, consistent, and predictable manner.Type: GrantFiled: March 1, 2013Date of Patent: June 24, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Elizabeth A. Benham, Max P. McDaniel, Kathy S. Collins
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Patent number: 8703886Abstract: Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes use a catalyst system containing at least two activator-supports. One activator-support is a halided solid oxide, and the other activator-support is a sulfated solid oxide and/or phosphated solid oxide.Type: GrantFiled: February 27, 2013Date of Patent: April 22, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Tony R. Crain, Kathy S. Collins
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Patent number: 8697599Abstract: A method comprising (a) contacting a support and a chromium-containing compound to form chromium-containing support, (b) heat treating the chromium-containing support in an oxidizing atmosphere to form a treated support, (c) contacting the treated support with carbon monoxide to form a CO-contacted support, and (d) contacting the CO-contacted support with hydrogen to form a catalyst. A method comprising oxidizing a chromium-treated support to form a polymerization catalyst, contacting the polymerization catalyst with carbon monoxide to form a reduced polymerization catalyst, contacting the reduced polymerization catalyst with hydrogen to form an activated polymerization catalyst, and contacting the activated polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form a random copolymer.Type: GrantFiled: February 17, 2011Date of Patent: April 15, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Elizabeth A. Benham, Max P. McDaniel, Kathy S. Collins, Stephen M. Wharry
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Publication number: 20140058054Abstract: Methods for the vapor phase preparation of fluorided solid oxide activator-supports, using certain calcining temperatures and fluoriding temperatures, are disclosed.Type: ApplicationFiled: August 27, 2012Publication date: February 27, 2014Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Max P. McDaniel, Kathy S. Collins, Qing Yang, Tony R. Crain
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Patent number: 8623973Abstract: Methods for controlling properties of an olefin polymer using a Group VIII transition metal-modified activator-support are disclosed. The melt index of the polymer can be decreased and the molecular weight of the polymer can be increased via the addition of the transition metal-modified activator-support to the polymerization reactor system.Type: GrantFiled: March 8, 2013Date of Patent: January 7, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Qing Yang, Tony R. Crain, Kathy S. Collins
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Publication number: 20130345373Abstract: Catalyst deactivating agents and compositions containing catalyst deactivating agents are disclosed. These catalyst deactivating agents can be used in methods of controlling polymerization reactions, methods of terminating polymerization reactions, methods of operating polymerization reactors, and methods of transitioning between catalyst systems.Type: ApplicationFiled: June 20, 2012Publication date: December 26, 2013Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Max P. McDaniel, Qing Yang, Kathy S. Collins, Tony R. Crain, Timothy O. Odi
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Publication number: 20130228723Abstract: Catalyst deactivating agents and compositions containing catalyst deactivating agents are disclosed. These catalyst deactivating agents can be used in methods of controlling polymerization reactions, methods of terminating polymerization reactions, methods of operating polymerization reactors, and methods of transitioning between catalyst systems.Type: ApplicationFiled: April 17, 2013Publication date: September 5, 2013Applicant: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Tony R. Crain, Kathy S. Collins
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Publication number: 20130144017Abstract: A method of preparing a catalyst comprising contacting an acidic colloidal silica suspension with a titanium-containing compound to form a mixture, adjusting the pH of mixture to about neutral to form a catalyst support, and contacting the catalyst support with chromium-containing compound to from a chromium-supported catalyst. A catalyst support prepared by contacting a colloidal silica suspension and a titanium-containing compound under acidic conditions to form a mixture, and contacting the mixture with a basic material in an amount sufficient to increase the pH of the mixture to about 7.Type: ApplicationFiled: December 2, 2011Publication date: June 6, 2013Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Max P. MCDANIEL, Kathy S. COLLINS
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Publication number: 20130137839Abstract: A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 8 long chain branches per million carbon atoms, a polydispersity index of greater than about 20 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 1 long chain branches per chain, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Youlu YU, Eric D. SCHWERDTFEGER, Max P. MCDANIEL, Alan L. SOLENBERGER, Kathy S. COLLINS
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Patent number: 8440772Abstract: Catalyst deactivating agents and compositions containing catalyst deactivating agents are disclosed. These catalyst deactivating agents can be used in methods of controlling polymerization reactions, methods of terminating polymerization reactions, methods of operating polymerization reactors, and methods of transitioning between catalyst systems.Type: GrantFiled: April 28, 2011Date of Patent: May 14, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Tony R. Crain, Kathy S. Collins
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Patent number: 8399580Abstract: Systems and methods for the maintenance of active chromium-based catalysts and their use in polymerization processes are described. In one embodiment, a system for the introduction of multiple polymerization components to activate a chromium based catalyst within a mix tank is described. Other described features may include materials and methods to purify the liquid medium of a catalyst slurry so that the catalyst slurry maintains a high level of activity. The active chromium-based catalyst may provide polyolefins with a number of desirable properties in a reliable, consistent, and predictable manner.Type: GrantFiled: August 11, 2010Date of Patent: March 19, 2013Assignee: Chevron Philips Chemical Company LPInventors: Elizabeth A. Benham, Max P. McDaniel, Kathy S. Collins
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Publication number: 20120277385Abstract: Catalyst deactivating agents and compositions containing catalyst deactivating agents are disclosed. These catalyst deactivating agents can be used in methods of controlling polymerization reactions, methods of terminating polymerization reactions, methods of operating polymerization reactors, and methods of transitioning between catalyst systems.Type: ApplicationFiled: April 28, 2011Publication date: November 1, 2012Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: QING YANG, Max P. McDaniel, Tony R. Crain, Kathy S. Collins
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Patent number: 8211988Abstract: A method comprising contacting a support with a chromium-containing compound and a tin-containing compound to produce a catalyst precursor, and activating the catalyst precursor in a temperature range of from about 400° C. to about 700° C. to produce a polymerization catalyst. A method comprising contacting a support with a chromium-containing compound and a tin-containing compound to produce a catalyst precursor, activating the catalyst precursor in a temperature range of from about 400° C. to about 700° C. to produce a polymerization catalyst, and contacting the polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form polyethylene wherein the molecular weight distribution of the polyethylene is broadened.Type: GrantFiled: April 30, 2008Date of Patent: July 3, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Kathy S. Collins
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Publication number: 20120041160Abstract: Systems and methods for the maintenance of active chromium-based catalysts and their use in polymerization processes are described. In one embodiment, a system for the introduction of multiple polymerization components to activate a chromium based catalyst within a mix tank is described. Other described features may include materials and methods to purify the liquid medium of a catalyst slurry so that the catalyst slurry maintains a high level of activity. The active chromium-based catalyst may provide polyolefins with a number of desirable properties in a reliable, consistent, and predictable manner.Type: ApplicationFiled: August 11, 2010Publication date: February 16, 2012Applicant: Chevron Phillips Chemical Company LPInventors: Elizabeth A. Benham, Max P. McDaniel, Kathy S. Collins
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Publication number: 20110136996Abstract: A method comprising (a) contacting a support and a chromium-containing compound to form chromium-containing support, (b) heat treating the chromium-containing support in an oxidizing atmosphere to form a treated support, (c) contacting the treated support with carbon monoxide to form a CO-contacted support, and (d) contacting the CO-contacted support with hydrogen to form a catalyst. A method comprising oxidizing a chromium-treated support to form a polymerization catalyst, contacting the polymerization catalyst with carbon monoxide to form a reduced polymerization catalyst, contacting the reduced polymerization catalyst with hydrogen to form an activated polymerization catalyst, and contacting the activated polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form a random copolymer.Type: ApplicationFiled: February 17, 2011Publication date: June 9, 2011Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Elizabeth A. BENHAM, Max P. MCDANIEL, Kathy S. COLLINS, Stephen M. WHARRY
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Publication number: 20110092357Abstract: Silica-coated alumina activator-supports, and catalyst compositions containing these activator-supports, are disclosed. Methods also are provided for preparing silica-coated alumina activator-supports, for preparing catalyst compositions, and for using the catalyst compositions to polymerize olefins.Type: ApplicationFiled: December 29, 2010Publication date: April 21, 2011Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Max P. McDaniel, Qing Yang, Randy S. Muninger, Elizabeth A. Benham, Kathy S. Collins
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Patent number: 7910669Abstract: A method comprising (a) contacting a support and a chromium-containing compound to form chromium-containing support, (b) heat treating the chromium-containing support in an oxidizing atmosphere to form a treated support, (c) contacting the treated support with carbon monoxide to form a CO-contacted support, and (d) contacting the CO-contacted support with hydrogen to form a catalyst. A method comprising oxidizing a chromium-treated support to form a polymerization catalyst, contacting the polymerization catalyst with carbon monoxide to form a reduced polymerization catalyst, contacting the reduced polymerization catalyst with hydrogen to form an activated polymerization catalyst, and contacting the activated polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form a random copolymer.Type: GrantFiled: March 17, 2009Date of Patent: March 22, 2011Assignee: Chevron Phillips Chemical Company LPInventors: Elizabeth A. Benham, Max P. McDaniel, Kathy S. Collins, Stephen M. Wharry
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Patent number: 7906603Abstract: Methods of polymerizing at least one olefin include contacting the olefin with a catalyst comprising chromium and with a cocatalyst comprising a non-transition metal cyclopentadienyl (Cp) compound. The polymerization may be performed in the presence of hydrogen. Using the cocatalyst in conjunction with the catalyst increases several properties, such as the high load melt index (HLMI), the MW, and the MN, of the polymers produced by this polymerization method. Polymer compositions produced by such methods have various unique properties, including a PDI greater than about 30. Additional embodiments include articles of manufacture or end use articles formed from such polymer compositions.Type: GrantFiled: May 13, 2010Date of Patent: March 15, 2011Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Elizabeth A. Benham, Steven J. Secora, Michael D. Jensen, Kathy S. Collins
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Patent number: 7884163Abstract: Silica-coated alumina activator-supports, and catalyst compositions containing these activator-supports, are disclosed. Methods also are provided for preparing silica-coated alumina activator-supports, for preparing catalyst compositions, and for using the catalyst compositions to polymerize olefins.Type: GrantFiled: September 23, 2009Date of Patent: February 8, 2011Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Qing Yang, Randy S. Muninger, Elizabeth A. Benham, Kathy S. Collins
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Publication number: 20100280199Abstract: This invention provides a compositions that are useful for polymerizing at least one monomer into at least one polymer.Type: ApplicationFiled: June 14, 2010Publication date: November 4, 2010Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: MAX P. MCDANIEL, ELIZABETH A. BENHAM, SHIRLEY J. MARTIN, KATHY S. COLLINS, JAMES L. SMITH, GIL R. HAWLEY, CHRISTOPHER E. WITTNER, MICHAEL D. JENSEN