Patents by Inventor Michael Elroy Muhle
Michael Elroy Muhle 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: 7307130Abstract: The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a static charge modifier. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(s). In particular, the polymerization catalyst system is supported on a carrier. More particularly, the polymerization catalyst comprises a bulky ligand metallocene-type catalyst system.Type: GrantFiled: March 16, 2005Date of Patent: December 11, 2007Assignee: Univation Technologies, LLCInventors: Brant Patrick, Michael Elroy Muhle, Matt Kuchta
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Patent number: 6995217Abstract: Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning from olefin polymerizations utilizing metallocene catalyst systems to olefin polymerizations utilizing traditional Ziegler-Natta catalyst systems.Type: GrantFiled: July 28, 2005Date of Patent: February 7, 2006Assignee: Univation Technologies, LLCInventors: Agapios Kyriacos Agapiou, Robert Olds Hagerty, F. David Hussein, Michael Elroy Muhle, Richard B. Pannell, Kathryn Ann Russell, Robert Lynn Santana, X. Simon Zhang
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Patent number: 6949612Abstract: Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning from olefin polymerizations utilizing metallocene catalyst systems to olefin polymerizations utilizing traditional Ziegler-Natta catalyst systems.Type: GrantFiled: November 18, 2003Date of Patent: September 27, 2005Assignee: Univation Technologies, LLCInventors: Agapios Kyriacos Agapiou, Robert Olds Hagerty, F. David Hussein, Michael Elroy Muhle, Richard B. Pannell, Kathryn Ann Russell, Robert Lynn Santana, X. Simon Zhang
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Patent number: 6914027Abstract: The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a static charge modifier. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(s). In particular, the polymerization catalyst system is supported on a carrier. More particularly, the polymerization catalyst comprises a bulky ligand metallocene-type catalyst system.Type: GrantFiled: December 1, 2000Date of Patent: July 5, 2005Assignee: Univation Technologies, LLCInventors: Brant Patrick, Michael Elroy Muhle, Matt Kuchta
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Patent number: 6858684Abstract: This invention relates to processes for transitioning among polymerization catalyst systems, preferably catalyst systems, which are incompatible with each other. Particularly, the invention relates to processes for transitioning among olefin polymerization reactions utilizing Ziegler-Natta catalyst systems, metallocene catalyst systems and chromium-based catalyst systems.Type: GrantFiled: November 17, 2003Date of Patent: February 22, 2005Assignee: Univation Technologies, LLCInventors: Ian D. Burdett, Ping P. Cai, Ronald Steven Eisinger, Mark Gregory Goode, F. David Hussein, Michael Allen Kinnan, Michael Elroy Muhle, James L. Swecker, II
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Patent number: 6831140Abstract: The invention relates to a method for evaluating the condition of a fluidized bed reactor by examining the condition of the reactor wall. Specifically, the invention relates to a method for measuring static in the reactor using a static probe that is located at the distributor plate and comprises a distributor plate cap. The invention also relates to methods of determining a static level using a radio frequency (rf). The static measurements are provided to indicate or predict major continuity disturbances in the fluidized bed gas phase reactor.Type: GrantFiled: November 20, 2003Date of Patent: December 14, 2004Assignee: Univation Technologies, LLCInventors: Michael Elroy Muhle, Robert Olds Hagerty, John Francis Szul, Mark Gregory Goode, Laurence G. Britton
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Publication number: 20040181016Abstract: Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning from olefin polymerizations utilizing metallocene catalyst systems to olefin polymerizations utilizing traditional Ziegler-Natta catalyst systems.Type: ApplicationFiled: November 18, 2003Publication date: September 16, 2004Inventors: Agapios Kyriacos Agapiou, Robert Olds Hagerty, F. David Hussein, Michael Elroy Muhle, Richard B. Pannell, Kathryn Ann Russell, Robert Lynn Santana, X. Simon Zhang
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Publication number: 20040138391Abstract: This invention relates to processes for transitioning among polymerization catalyst systems, preferably catalyst systems, which are incompatible with each other. Particularly, the invention relates to processes for transitioning among olefin polymerization reactions utilizing Ziegler-Natta catalyst systems, metallocene catalyst systems and chromium-based catalyst systems.Type: ApplicationFiled: November 17, 2003Publication date: July 15, 2004Inventors: Ian D. Burdett, Ping P. Cai, Ronald Steven Eisinger, Mark Gregory Goode, F. David Hussein, Michael Allen Kinnan, Michael Elroy Muhle, James L. Swecker
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Publication number: 20040132931Abstract: The invention relates to a method for evaluating the condition of a fluidized bed reactor by examining the condition of the reactor wall. Specifically, the invention relates to a method for measuring static in the reactor using a static probe that is located at the distributor plate and comprises a distributor plate cap. The invention also relates to methods of determining a static level using a radio frequency (rf). The static measurements are provided to indicate or predict major continuity disturbances in the fluidized bed gas phase reactor.Type: ApplicationFiled: November 20, 2003Publication date: July 8, 2004Inventors: Michael Elroy Muhle, Robert Olds Hagerty, John Francis Szul, Mark Gregory Goode, Laurence G. Britton
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Patent number: 6753390Abstract: A gas phase polymerization process for producing a polyolefin composition is described, which includes passing a gaseous stream containing hydrogen gas and one or more monomers, including ethylene monomers, through a reactor that includes a fluidized bed, under reactive conditions, in the presence of a catalyst that includes metallocene, to provide a polyolefin composition, wherein in one embodiment the fluidized bulk density is 60% or more of the settled bulk density (or, a voidage of 40% or less); and wherein the voidage is controlled by a number of factors including, in certain embodiments, (a) the reactor temperature being maintained at 100° C. or below; (b) the molar ratio of hydrogen gas to ethylene introduced into the reactor being 0.015 or below.Type: GrantFiled: February 18, 2003Date of Patent: June 22, 2004Assignee: Univation Technologies, LLCInventors: Fred David Ehrman, Michael Elroy Muhle, Pradeep Pandurang Shirodkar, Keith Wesley Trapp
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Publication number: 20040044153Abstract: A gas phase polymerization process for producing a polyolefin composition is described, which includes passing a gaseous stream containing hydrogen gas and one or more monomers, including ethylene monomers, through a reactor that includes a fluidized bed, under reactive conditions, in the presence of a catalyst that includes metallocene, to provide a polyolefin composition, wherein in one embodiment the fluidized bulk density is 60% or more of the settled bulk density (or, a voidage of 40% or less); and wherein the voidage is controlled by a number of factors including, in certain embodiments, (a) the reactor temperature being maintained at 100° C. or below; (b) the molar ratio of hydrogen gas to ethylene introduced into the reactor being 0.015 or below.Type: ApplicationFiled: February 18, 2003Publication date: March 4, 2004Inventors: Fred David Ehrman, Michael Elroy Muhle, Pradeep Pandurang Shirodkar, Keith Wesley Trapp
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Publication number: 20020103072Abstract: The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a static charge modifier. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(s). In particular, the polymerization catalyst system is supported on a carrier. More particularly, the polymerization catalyst comprises a bulky ligand metallocene-type catalyst system.Type: ApplicationFiled: December 1, 2000Publication date: August 1, 2002Inventors: Brant Patrick, Michael Elroy Muhle, Matt Kuchta
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Patent number: 6140432Abstract: This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst of the invention provides for a supported metallocene catalyst which when utilized in a polymerization process substantially reduces reactor fouling and sheeting in a gas or slurry polymerization process.Type: GrantFiled: July 13, 1995Date of Patent: October 31, 2000Assignee: Exxon Chemical Patents Inc.Inventors: Agapios Kyriacos Agapiou, Chi-I Kuo, Michael Elroy Muhle, Anthony Nicholas Speca
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Patent number: 6117955Abstract: This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst of the invention provides for a supported metallocene catalyst which when utilized in a polymerization process substantially reduces reactor fouling and sheeting in a gas or slurry polymerization process.Type: GrantFiled: July 30, 1996Date of Patent: September 12, 2000Assignee: Exxon Chemical Patents IncInventors: Agapios Kyriacos Agapiou, Chi-I Kuo, Michael Elroy Muhle, Anthony Nicholas Speca
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Patent number: 5763543Abstract: The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process for polymerizing monomer(s). The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s), alone or in combination, in the presence of a metallocene catalyst system in a fluidized bed reactor, preferably operating in a condensed mode.Type: GrantFiled: September 14, 1994Date of Patent: June 9, 1998Assignee: Exxon Chemical Patents Inc.Inventors: Michael Elroy Muhle, Gary Thomas Renola, Agapios Kyriacos Agapiou, Dwayne Lee Litteer, John Robert Griffin
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Patent number: 5753786Abstract: This invention relates to a process for transitioning between incompatible polymerization catalyst systems. Particularly, the invention relates to a process for transitioning from an olefin polymerization reaction utilizing a traditional Ziegler-Natta catalyst system to a metallocene-olefin polymerization reaction.Type: GrantFiled: May 17, 1995Date of Patent: May 19, 1998Assignee: Exxon Chemical Patents Inc.Inventors: Agapios Kyriacos Agapiou, Michael Elroy Muhle, Gary Thomas Renola
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Patent number: 5747612Abstract: This invention relates to a process for transitioning between incompatible polymerization catalyst systems. Particularly, the invention relates to a process for transitioning from an olefin polymerization reaction utilizing a traditional Ziegler-Natta catalyst system to a metallocene-olefin polymerization reaction.Type: GrantFiled: May 19, 1995Date of Patent: May 5, 1998Assignee: Exxon Chemical Patents Inc.Inventors: Agapios Kyriacos Agapiou, Michael Elroy Muhle, Gary Thomas Renola
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Patent number: 5712352Abstract: The present invention relates to a continuous process for the polymerization of olefin(s) utilizing a metallocene catalyst or catalyst system in a continuous slurry or gas phase polymerization process. The invention is more particularly drawn to a gas phase polymerization process for polymerizing one or more olefin(s) in the presence of a metallocene catalyst system in a fluidized bed reactor in the absence of or with a low mount of a scavenger.Type: GrantFiled: October 30, 1995Date of Patent: January 27, 1998Assignee: Exxon Chemical Patents Inc.Inventors: Patrick Brant, John R. Griffin, Michael Elroy Muhle, Dwayne Lee Litteer, Agapios Kyriacos Agapiou, Gary Thomas Renola
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Patent number: 5672665Abstract: This invention relates to a process for transitioning between incompatible polymerization catalyst systems. Particularly, the invention relates to a process for transitioning from an olefin polymerization reaction utilizing a traditional Ziegler-Natta catalyst system to a metallocene-olefin polymerization reaction.Type: GrantFiled: May 17, 1995Date of Patent: September 30, 1997Assignee: Exxon Chemical Patents, Inc.Inventors: Agapios Kyriacos Agapiou, Michael Elroy Muhle, Gary Thomas Renola
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Patent number: 5672666Abstract: This invention relates to a process for transitioning between polymerization catalyst systems which are incompatible with each other. Particularly, the invention relates to a process for transitioning from an olefin polymerization reaction utilizing a traditional Ziegler-Natta catalyst system to a metallocene-olefin polymerization reaction.Type: GrantFiled: June 5, 1995Date of Patent: September 30, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Michael Elroy Muhle, Agapios Kyriacos Agapiou, Gary Thomas Renola