Patents by Inventor Maria A. Apecetche
Maria A. Apecetche 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: 20140200317Abstract: Catalysts and methods for making and using the same are provided. The method for fabricating a catalyst may includes contacting a supported catalyst with a monomer under conditions that reduce an overall charge of the catalyst to less than about 75% of an initial charge of the catalyst. A method for polymerization may include introducing a pre-polymerized catalyst and one or more olefins into a gas phase fluidized bed reactor, operating the reactor at conditions sufficient to produce a polyolefin, wherein the polymerization is carried out in the substantial absence of any continuity additives.Type: ApplicationFiled: March 24, 2014Publication date: July 17, 2014Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Maria A. Apecetche, Maria Pollard, Robert O. Hagerty, Michael D. Awe, Kevin J. Cann, Jose F. Cevallos-Candau, F. David Hussein
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Patent number: 8722820Abstract: Catalysts and methods for making and using the same are provided. The method for fabricating a catalyst may includes contacting a supported catalyst with a monomer under conditions that reduce an overall charge of the catalyst to less than about 75% of an initial charge of the catalyst. A method for polymerization may include introducing a pre-polymerized catalyst and one or more olefins into a gas phase fluidized bed reactor, operating the reactor at conditions sufficient to produce a polyolefin, wherein the polymerization is carried out in the substantial absence of any continuity additives.Type: GrantFiled: December 7, 2010Date of Patent: May 13, 2014Assignee: Univation Technologies, LLCInventors: Maria A. Apecetche, Maria Pollard, Robert O. Hagerty, Michael D. Awe, Kevin J. Cann, Jose F. Cevallos-Candau, F. David Hussein
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Patent number: 8420754Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: November 11, 2010Date of Patent: April 16, 2013Assignee: Univation Technologies, LLCInventors: Kevin J Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
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Publication number: 20130085245Abstract: Catalysts and methods for making and using the same are provided. The method for fabricating a catalyst may includes contacting a supported catalyst with a monomer under conditions that reduce an overall charge of the catalyst to less than about 75% of an initial charge of the catalyst. A method for polymerization may include introducing a pre-polymerized catalyst and one or more olefins into a gas phase fluidized bed reactor, operating the reactor at conditions sufficient to produce a polyolefin, wherein the polymerization is carried out in the substantial absence of any continuity additives.Type: ApplicationFiled: December 7, 2010Publication date: April 4, 2013Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Maria A. Apecetche, Maria Pollard, Robert O. Hagerty, Michael D. Awe, Kevin J. Cann, Jose F. Cevallos-Candau, F. David Hussein
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Patent number: 8129484Abstract: Disclosed herein are various processes, including continuous fluidized-bed gas-phase polymerization processes for making a high strength, high density polyethylene copolymer, comprising (including): contacting monomers that include ethylene and optionally at least one non-ethylene monomer with fluidized catalyst particles in a gas phase in the presence of hydrogen gas at an ethylene partial pressure of 100 psi or more and a polymerization temperature of 120° C. or less to produce a polyethylene copolymer having a density of 0.945 g/cc or more and an ESCR Index of 1.0 or more wherein the catalyst particles are prepared at an activation temperature of 700° C. or less, and include silica, chromium, and titanium.Type: GrantFiled: July 21, 2006Date of Patent: March 6, 2012Assignee: Univation Technologies, LLCInventors: Kevin J. Cann, Ronald S. Eisinger, Mark G. Goode, John H. Moorhouse, Cliff R. Mure, Stephen P. Jaker, Maria A. Apecetche
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Patent number: 8076262Abstract: Broad molecular weight polyethylene and polyethylene having a bimodal molecular weight profile can be produced with chromium oxide based catalyst systems employing alkyl silanols. The systems may also contain various organoaluminum compounds. Catalyst activity and molecular weight of the resulting polyethylene may also be tuned using the present invention.Type: GrantFiled: December 5, 2007Date of Patent: December 13, 2011Assignee: Univation Technologies, LLCInventors: Kevin J. Cann, Minghui Zhang, John H. Moorhouse, Maria A. Apecetche
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Patent number: 8012903Abstract: Methods are provided to prepare a catalyst system that includes at least one titanium compound, at least one magnesium compound, at least one electron donor compound, at least one activator compound, and at least one silica support material, the at least one silica support material having a median particle size in the range of from 20 to 50 microns with no more than 10% of the particles having a size less than 10 microns and no more than 10% of the particles having a size greater than 50 microns and average pore diameter of at least ?220 angstroms.Type: GrantFiled: April 17, 2008Date of Patent: September 6, 2011Assignee: Univation Technologies, LLCInventors: Maria A. Apecetche, Phuong A. Cao, Michael D. Awe, Ann M. Schoeb-Wolters, Ryan W. Impelman
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Patent number: 7915357Abstract: Disclosed herein are various processes, including continuous fluidized-bed gas-phase polymerization processes for making a high strength, high density polyethylene copolymer, comprising (including): contacting monomers that include ethylene and optionally at least one non-ethylene monomer with fluidized catalyst particles in a gas phase in the presence of hydrogen gas at an ethylene partial pressure of 100 psi or more and a polymerization temperature of 105° C. or less to produce a polyethylene copolymer having a density of 0.945 g/cc or more and an ESCR Index of 1.0 or more wherein the catalyst particles are prepared at an activation temperature of 700° C. or less, and include silica, chromium, and titanium.Type: GrantFiled: February 26, 2010Date of Patent: March 29, 2011Assignee: Univation Technologies, LLCInventors: Kevin Joseph Cann, Ronald S. Eisinger, Mark Gregory Goode, John H. Moorhouse, Cliff R. Mure, Stephen P. Jaker, Maria A. Apecetche
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Publication number: 20110060111Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: ApplicationFiled: November 11, 2010Publication date: March 10, 2011Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Kevin J. Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, JR., Maria Apecetche
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Patent number: 7816296Abstract: Embodiments of the present invention include a method of polymerizing olefins comprising contacting olefins with a catalyst composition made by the process of combining a hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form a catalyst composition. Embodiments of the present invention also include catalyst compositions comprising a hindered polyalicyclic alkyl catalyst precursor made by the process of combining the hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form the catalyst composition.Type: GrantFiled: January 20, 2010Date of Patent: October 19, 2010Assignee: Univation Technologies, LLCInventors: Maria A. Apecetche, John Moorhouse, Mark G. Goode, Ronald S. Eisinger, Kevin J. Cann
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Publication number: 20100160580Abstract: Disclosed herein are various processes, including continuous fluidized-bed gas-phase polymerization processes for making a high strength, high density polyethylene copolymer, comprising (including): contacting monomers that include ethylene and optionally at least one non-ethylene monomer with fluidized catalyst particles in a gas phase in the presence of hydrogen gas at an ethylene partial pressure of 100 psi or more and a polymerization temperature of 105° C. or less to produce a polyethylene copolymer having a density of 0.945 g/cc or more and an ESCR Index of 1.0 or more wherein the catalyst particles are prepared at an activation temperature of 700° C. or less, and include silica, chromium, and titanium.Type: ApplicationFiled: February 26, 2010Publication date: June 24, 2010Applicant: Univation Technologies, LLCInventors: Kevin Joseph Cann, Ronald S. Eisinger, Mark Gregory Goode, John H. Moorhouse, Cliff R. Mure, Stephen P. Jaker, Maria A. Apecetche
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Publication number: 20100137533Abstract: Embodiments of the present invention include a method of polymerizing olefins comprising contacting olefins with a catalyst composition made by the process of combining a hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form a catalyst composition. Embodiments of the present invention also include catalyst compositions comprising a hindered polyalicyclic alkyl catalyst precursor made by the process of combining the hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form the catalyst composition.Type: ApplicationFiled: January 20, 2010Publication date: June 3, 2010Applicant: Univation Technologies, LLCInventors: Maria A. Apecetche, John Moorhouse, Mark G. Goode, Ronald S. Eisinger, Kevin J. Cann
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Publication number: 20090312506Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: ApplicationFiled: June 23, 2009Publication date: December 17, 2009Applicant: UNIVATION TECHNOLOGIES, LLC.Inventors: Kevin J. Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John H. Moorhouse, Mark G. Goode, Daniel P. Zilker, JR., Maria Apecetche
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Publication number: 20090215970Abstract: Disclosed herein are various processes, including continuous fluidized-bed gas-phase polymerization processes for making a high strength, high density polyethylene copolymer, comprising (including): contacting monomers that include ethylene and optionally at least one non-ethylene monomer with fluidized catalyst particles in a gas phase in the presence of hydrogen gas at an ethylene partial pressure of 100 psi or more and a polymerization temperature of 120° C. or less to produce a polyethylene copolymer having a density of 0.945 g/cc or more and an ESCR Index of 1.0 or more wherein the catalyst particles are prepared at an activation temperature of 700° C. or less, and include silica, chromium, and titanium.Type: ApplicationFiled: July 21, 2006Publication date: August 27, 2009Applicant: UNIVATION TECHNOLOGIES, LLC.Inventors: Kevin J. Cann, Ronald S. Eisinger, Mark G. Goode, John H. Moorhouse, Cliff R. Mure, Stephen P. Jaker, Maria A. Apecetche
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Patent number: 7563851Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: August 11, 2005Date of Patent: July 21, 2009Assignee: Univation Technologies, LLCInventors: Kevin J Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
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Patent number: 7504463Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: August 11, 2005Date of Patent: March 17, 2009Assignee: Univation Technologies, LLCInventors: Kevin J Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
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Publication number: 20080242821Abstract: Embodiments of the present invention include a method of polymerizing olefins comprising contacting olefins with a catalyst composition made by the process of combining a hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form a catalyst composition. Embodiments of the present invention also include catalyst compositions comprising a hindered polyalicyclic alkyl catalyst precursor made by the process of combining the hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form the catalyst composition.Type: ApplicationFiled: June 4, 2008Publication date: October 2, 2008Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Maria A. Apecetche, John Moorhouse, Mark G. Goode, Ronald S. Eisinger, Kevin J. Cann
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Publication number: 20080214388Abstract: Methods are provided to prepare a catalyst system that includes at least one titanium compound, at least one magnesium compound, at least one electron donor compound, at least one activator compound, and at least one silica support material, the at least one silica support material having a median particle size in the range of from 20 to 50 microns with no more than 10% of the particles having a size less than 10 microns and no more than 10% of the particles having a size greater than 50 microns and average pore diameter of at least ?220 angstroms.Type: ApplicationFiled: April 17, 2008Publication date: September 4, 2008Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Maria A. Apecetche, Phuong A. Cao, Michael D. Awe, Ann M. Schoeb-Wolters, Ryan W. Impelman
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Patent number: 7414099Abstract: Embodiments of the present invention include a method of polymerizing olefins comprising contacting olefins with a catalyst composition made by the process of combining a hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form a catalyst composition. Embodiments of the present invention also include catalyst compositions comprising a hindered polyalicyclic alkyl catalyst precursor made by the process of combining the hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form the catalyst composition.Type: GrantFiled: October 13, 2005Date of Patent: August 19, 2008Assignee: Univation Technologies, LLCInventors: Maria A. Apecetche, John Moorhouse, Mark G. Goode, Ronald S. Eisinger, Kevin J. Cann
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Patent number: 7381780Abstract: Improved catalyst compositions, and polymerization processes using such improved catalyst compositions, are provided. An example of an improved catalyst composition is a supported catalyst system that includes at least one titanium compound, at least one magnesium compound, at least one electron donor compound, at least one activator compound, and at least one silica support material, the at least one silica support material having a median particle size in the range of from 20 to 50 microns with no more than 10% of the particles having a size less than 10 microns and no more than 10% of the particles having a size greater than 50 microns and average pore diameter of at least ?220 angstroms.Type: GrantFiled: July 10, 2007Date of Patent: June 3, 2008Assignee: Univation Technologies, LLCInventors: Maria A. Apecetche, Phuong A. Cao, Michael D. Awe, Ann M. Schoeb-Wolters, Ryan W. Impelman