Patents by Inventor Elizabeth A. Benham
Elizabeth A. Benham 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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Publication number: 20140114039Abstract: Techniques are provided for catalyst preparation. A system for catalyst preparation may include an agitator disposed inside a polymerization catalyst tank and configured to mix a polymerization catalyst and a solvent to generate a polymerization catalyst solution. The system may also include a heating system coupled to the polymerization catalyst tank and configured to maintain a temperature of the polymerization catalyst solution above a threshold. The system may also include a precontactor configured to receive feed streams comprising an activator and the polymerization catalyst solution from the polymerization catalyst tank to generate a catalyst complex. The system may also include a transfer line configured to transfer the catalyst complex from an outlet of the precontactor to a reactor.Type: ApplicationFiled: October 18, 2012Publication date: April 24, 2014Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Elizabeth A. Benham, Albert P. Masino, Qing Yang, Randy S. Muninger, Rebecca A. Gonzales
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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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Patent number: 8426538Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.Type: GrantFiled: September 8, 2011Date of Patent: April 23, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Elizabeth A. Benham, Randy L. Muninger, Gary G. Jerdee, Ashish M. Sukhadia, Qing R. Yang, Matthew G. Thorn
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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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Patent number: 8372771Abstract: A system and method for activating chromium catalyst, including: increasing temperature of a chromium catalyst at a first rate for a first period of time to a first temperature; and increasing temperature of the chromium catalyst at a second rate for a second period of time from the first temperature to a second temperature, wherein the first rate is greater than the second rate, and wherein the first period precedes the second period.Type: GrantFiled: February 16, 2010Date of Patent: February 12, 2013Assignee: Chevrton Phillips Chemical Company LPInventors: Elizabeth A. Benham, Max P. McDaniel
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Patent number: 8349264Abstract: Methods and systems for preparing catalyst, such as chromium catalysts, are provided. The valence of at least a portion of the catalyst sent to an activator is changed from Cr(III) to Cr(VI). The catalyst is prepared or activated continuously using a fluidization bed catalyst activator.Type: GrantFiled: January 5, 2012Date of Patent: January 8, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Elizabeth A. Benham, Max P. McDaniel, Ted H. Cymbaluk, Charles K. Newsome, Charles R. Nease, H. Kenneth Staffin, Thomas R. Parr
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Publication number: 20120277386Abstract: A method comprising contacting an olefin in the presence of a catalyst and a melt index modifier (MIM) under conditions suitable to form a polyolefin and recovering the polyolefin, wherein the polyolefin melt index is increased by at least about 25%, wherein the normalized catalyst activity is decreased by less than about 10%, and wherein the MIM is characterized by the general formula R1—HC?CH—R2 or R3R4C?CH2 where R1, R2, R3, R4 are each selected from the group consisting of a non-aromatic organyl group.Type: ApplicationFiled: April 26, 2011Publication date: November 1, 2012Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Elizabeth A. BENHAM, Charles R. NEASE, Max P. MCDANIEL
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Patent number: 8242221Abstract: The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.Type: GrantFiled: January 5, 2012Date of Patent: August 14, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Matthew G. Thorn, Elizabeth A. Benham
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Patent number: 8183173Abstract: A method of preparing a catalyst comprising aging a silica support in an alkaline solution to produce an alkaline aged silica support, removing at least a portion of the alkaline solution from the alkaline aged silica support to produce a dried silica support, and activating the silica support to produce a catalyst composition, wherein alkaline aging lowers the surface area of the silica support to less than about 50% of the original value and wherein activation of the silica support is carried out in batches of equal to or greater than about 500 lbs for a time period of less than about 8 hours.Type: GrantFiled: December 21, 2007Date of Patent: May 22, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Elizabeth A. Benham, Ted Cymbaluk, George Neil
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Publication number: 20120108764Abstract: The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.Type: ApplicationFiled: January 5, 2012Publication date: May 3, 2012Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Max P. McDaniel, Matthew G. Thorn, Elizabeth A. Benham
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Publication number: 20120108768Abstract: Methods and systems for preparing catalyst, such as chromium catalysts, are provided. The valence of at least a portion of the catalyst sent to an activator is changed from Cr(III) to Cr(VI). The catalyst is prepared or activated continuously using a fluidization bed catalyst activator.Type: ApplicationFiled: January 5, 2012Publication date: May 3, 2012Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Elizabeth A. BENHAM, Max P. MCDANIEL, Ted H. CYMBALUK, Charles K. NEWSOME, Charles R. NEASE, H. Kenneth STAFFIN, Thomas R. PARR
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Patent number: 8163856Abstract: In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising emulsifying the ionic liquid catalyst with one or more liquid components. In an embodiment, a method is disclosed comprising introducing into a reaction zone a monomer feed and a reduced amount of ionic liquid catalyst and controlling an amount of shear present in the reaction zone to maintain a desired conversion reaction of the monomer. In an embodiment, a catalyzed reaction system is disclosed comprising a reactor configured to receive one or more liquid components and ionic liquid catalyst; a device coupled to the reactor for adding high shear to the liquid components and ionic liquid catalyst; and a controller coupled to the device for adding high shear and configured to control the amount of shear added to a catalyzed reaction zone to maintain a conversion reaction.Type: GrantFiled: April 25, 2011Date of Patent: April 24, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Lee H. Bergman, Kenneth D. Hope, Elizabeth A. Benham, Donald A. Stern
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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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Patent number: 8114353Abstract: Methods and systems for preparing catalyst, such as chromium catalysts, are provided. The valence of at least a portion of the catalyst sent to an activator is changed from Cr(III) to Cr(VI). The catalyst is prepared or activated continuously using a fluidization bed catalyst activator.Type: GrantFiled: December 20, 2007Date of Patent: February 14, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Elizabeth A. Benham, Max P. McDaniel, Ted H. Cymbaluk, Charles K. Newsome, Charles R. Nease, H. Kenneth Staffin, Thomas R. Parr
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Patent number: 8110640Abstract: The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.Type: GrantFiled: November 18, 2010Date of Patent: February 7, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Matthew G. Thorn, Elizabeth A. Benham
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Publication number: 20110319575Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.Type: ApplicationFiled: September 8, 2011Publication date: December 29, 2011Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Elizabeth A. Benham, Randy L. Muninger, Gary Jerdee, Ashish M. Sukhadia, Qing Yáng, Matthew G. Thorn
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Patent number: 8030241Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.Type: GrantFiled: October 29, 2009Date of Patent: October 4, 2011Assignee: Chevron Phillips Chemical Company, LPInventors: Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Elizabeth A. Benham, Randy Muninger, Gary Jerdee, Ashish M. Sukhadia, Qing Yang, Matthew G. Thorn
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Publication number: 20110201768Abstract: A system and method for activating chromium catalyst, including: increasing temperature of a chromium catalyst at a first rate for a first period of time to a first temperature; and increasing temperature of the chromium catalyst at a second rate for a second period of time from the first temperature to a second temperature, wherein the first rate is greater than the second rate, and wherein the first period precedes the second period.Type: ApplicationFiled: February 16, 2010Publication date: August 18, 2011Applicant: Chevron Phillips Chemical Company LPInventors: Elizabeth A. Benham, Max P. McDaniel
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Publication number: 20110201766Abstract: In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising emulsifying the ionic liquid catalyst with one or more liquid components. In an embodiment, a method is disclosed comprising introducing into a reaction zone a monomer feed and a reduced amount of ionic liquid catalyst and controlling an amount of shear present in the reaction zone to maintain a desired conversion reaction of the monomer. In an embodiment, a catalyzed reaction system is disclosed comprising a reactor configured to receive one or more liquid components and ionic liquid catalyst; a device coupled to the reactor for adding high shear to the liquid components and ionic liquid catalyst; and a controller coupled to the device for adding high shear and configured to control the amount of shear added to a catalyzed reaction zone to maintain a conversion reaction.Type: ApplicationFiled: April 25, 2011Publication date: August 18, 2011Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Lee H. BERGMAN, Kenneth D. HOPE, Elizabeth A. BENHAM, Donald A. STERN
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Patent number: 7981832Abstract: New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature is followed by a first hold period before heating to a higher second temperature and maintaining the second temperature for a second hold period. In one aspect, the overall activation process takes less than 10 hours.Type: GrantFiled: September 23, 2009Date of Patent: July 19, 2011Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Elizabeth A. Benham