Patents by Inventor David J. Rauscher
David J. Rauscher 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: 9650448Abstract: The process includes reacting a reaction mixture comprising magnesium ethoxide (Mg(OEt)2), triethylaluminum (TEAl), and 2-ethylhexanol (2-EHOH) to form magnesium 2-ethyl hexyl alkoxide (Mg(2-EHO)2) and contacting Mg(2-EHO)2 in hexane with a first agent to form a reaction product “A.” The process further includes contacting the reaction product “A” with a second agent to form a reaction product “B”, wherein the second agent includes a transition metal and a halogen. The process further includes contacting the reaction product “B” with a third agent to form a reaction product “C”, wherein the third agent includes a first metal halide. In addition, the process includes contacting the reaction product “C” with a fourth agent to form a reaction product “D”, wherein the fourth agent includes a second metal halide. The process also includes contacting the reaction product “D” with a fifth agent to form a Ziegler-Natta catalyst, wherein the fifth agent includes an organoaluminum compound.Type: GrantFiled: June 13, 2014Date of Patent: May 16, 2017Assignee: Fina Technology, Inc.Inventors: Lei Zhang, David J. Rauscher
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Patent number: 9624321Abstract: A process of forming a Ziegler-Natta catalyst component is disclosed. The process includes contacting an alkyl magnesium compound with an alcohol and a first organoaluminum compound to form a magnesium dialkoxide compound and contacting the magnesium dialkoxide compound with a titanating agent to form reaction product “A.” The process further includes reacting reaction product “A” with a halogenating agent to form reaction product “B” and reacting reaction product “B” with a second organoaluminum compound to form a single halogenated catalyst component.Type: GrantFiled: June 13, 2014Date of Patent: April 18, 2017Assignee: Fina Technology, Inc.Inventors: Lei Zhang, David J. Rauscher
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Publication number: 20150361187Abstract: The process includes reacting a reaction mixture comprising magnesium ethoxide (Mg(OEt)2), triethylaluminum (TEAl), and 2-ethylhexanol (2-EHOH) to form magnesium 2-ethyl hexyl alkoxide (Mg(2-EHO)2) and contacting Mg(2-EHO)2 in hexane with a first agent to form a reaction product “A.” The process further includes contacting the reaction product “A” with a second agent to form a reaction product “B”, wherein the second agent includes a transition metal and a halogen. The process further includes contacting the reaction product “B” with a third agent to form a reaction product “C”, wherein the third agent includes a first metal halide. In addition, the process includes contacting the reaction product “C” with a fourth agent to form a reaction product “D”, wherein the fourth agent includes a second metal halide. The process also includes contacting the reaction product “D” with a fifth agent to form a Ziegler-Natta catalyst, wherein the fifth agent includes an organoaluminum compound.Type: ApplicationFiled: June 13, 2014Publication date: December 17, 2015Inventors: Lei Zhang, David J. Rauscher
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Publication number: 20150361188Abstract: A process of forming a Ziegler-Natta catalyst component is disclosed. The process includes contacting an alkyl magnesium compound with an alcohol and a first organoaluminum compound to form a magnesium dialkoxide compound and contacting the magnesium dialkoxide compound with a titanating agent to form reaction product “A.” The process further includes reacting reaction product “A” with a halogenating agent to form reaction product “B” and reacting reaction product “B” with a second organoaluminum compound to form a single halogenated catalyst component.Type: ApplicationFiled: June 13, 2014Publication date: December 17, 2015Inventors: Lei Zhang, David J. Rauscher
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Publication number: 20140051816Abstract: Embodiments of the invention generally include multicomponent catalyst systems, polymerization processes and reactor blends formed by the processes. The multicomponent catalyst system generally includes a first catalyst component selected from an isotactic directing metallocene catalyst. The multicomponent catalyst system further includes a second syndiotactic directing metallocene catalyst component.Type: ApplicationFiled: May 21, 2012Publication date: February 20, 2014Applicant: FINA TECHNOLOGY, INC.Inventors: Jun Tian, William J. Gauthier, David J. Rauscher, Nathan Williams
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Publication number: 20120322961Abstract: Embodiments of the invention generally include multicomponent catalyst systems, polymerization processes and reactor blends formed by the processes. The multicomponent catalyst system generally includes a first catalyst component and a second catalyst component, wherein the second catalyst component is different from the first catalyst component.Type: ApplicationFiled: May 21, 2012Publication date: December 20, 2012Applicant: FINA TECHNOLOGY, INC.Inventors: David J. Rauscher, Jun Tian, William J. Gauthier, Shady N. Henry
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Publication number: 20120322960Abstract: Embodiments of the invention generally include multicomponent catalyst systems, polymerization processes and reactor blends formed by the processes. The multicomponent catalyst system generally includes a first catalyst component selected from an isotactic directing metallocene catalyst. The multicomponent catalyst system further includes a second syndiotactic directing metallocene catalyst component.Type: ApplicationFiled: May 21, 2012Publication date: December 20, 2012Applicant: FINA TECHNOLOGY, INC.Inventors: Jun Tian, William J. Gauthier, David J. Rauscher, Nathan Williams
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Patent number: 7470764Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity. Consequently, the curve of storage modulus (G?) v. temperature is shifted such that the film achieves the same storage modulus at a lower temperature enabling faster throughput of polypropylene film through a high-speed tenter.Type: GrantFiled: January 31, 2007Date of Patent: December 30, 2008Assignee: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, David J. Rauscher, Michael Ray Wallace
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Patent number: 7202191Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity. Consequently, the curve of storage modulus (G?) v. temperature is shifted such that the film achieves the same storage modulus at a lower temperature enabling faster throughput of polypropylene film through a high-speed tenter.Type: GrantFiled: October 4, 2005Date of Patent: April 10, 2007Assignee: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, David J. Rauscher, Michael R. Wallace
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Patent number: 7109143Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity. Consequently, the curve of storage modulus (G?) v. temperature is shifted such that the film achieves the same storage modulus at a lower temperature enabling faster throughput of polypropylene film through a high-speed tenter.Type: GrantFiled: September 10, 2003Date of Patent: September 19, 2006Assignee: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, David J. Rauscher, Michael Ray Wallace
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Patent number: 7022796Abstract: A method of preparing ultra high melt flow polypropylene having reduced xylene solubles is provided. The method utilizes a diether internal donor-containing Ziegler-Natta catalyst system to polymerize propylene. The polypropylene produced is characterized by having a melt flow of at least about 300 g/10 min and a xylene solubles of not more than about 3.5% and no peroxide residue. The catalyst system may also include an internal phthalate donor. The method of the invention allows the amount of external donors to be reduced, or even eliminated, without significant increases in xylene solubles.Type: GrantFiled: September 10, 2003Date of Patent: April 4, 2006Assignee: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, Luis Paulo Barthel-Rosa, Shabbir Ahmedbhai Malbari, David J. Rauscher, Michel M. Daumerie
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Patent number: 6855783Abstract: Supported metallocene catalysts and processes for the use of such catalysts in isotactic polymerization of a C3+ ethylenically unsaturated monomer. The supported catalysts comprise a particulate silica support, an alkyl alumoxane component, and a metallocene catalyst component. The support has an average particle size of 10-50 microns, a surface area of 200-800 m2/g and a pore volume of 0.9-2.1 milliliters per gram (ml/g). Alumoxane is incorporated onto the support to provide a weight ratio of alumoxane to silica of at least 0.8:1.Type: GrantFiled: April 11, 2003Date of Patent: February 15, 2005Assignee: Fina Technology, Inc.Inventors: William J. Gauthier, Margaret Kerr, Jun Tian, David J. Rauscher, Constance Hayworth Patrick, Shady Henry
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Publication number: 20040204310Abstract: Supported metallocene catalysts and processes for the use of such catalysts in isotactic polymerization of a C3+ethylenically unsaturated monomer. The supported catalysts comprise a particulate silica support, an alkyl alumoxane component, and a metallocene catalyst component. The support has an average particle size of 10-50 microns, a surface area of 200-800 m2/g and a pore volume of 0.9-2.1 milliliters per gram (ml/g). Alumoxane is incorporated onto the support to provide a weight ratio of alumoxane to silica of at least 0.8:1.Type: ApplicationFiled: April 11, 2003Publication date: October 14, 2004Inventors: William J. Gauthier, Margaret Kerr, Jun Tian, David J. Rauscher, Constance Hayworth Patrick, Shady Henry
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Publication number: 20040116629Abstract: A method of preparing ultra high melt flow polypropylene having reduced xylene solubles is provided. The method utilizes a diether internal donor-containing Ziegler-Natta catalyst system to polymerize propylene. The polypropylene produced is characterized by having a melt flow of at least about 300 g/10 min and a xylene solubles of not more than about 3.5% and no peroxide residue. The catalyst system may also include an internal phthalate donor. The method of the invention allows the amount of external donors to be reduced, or even eliminated, without significant increases in xylene solubles.Type: ApplicationFiled: September 10, 2003Publication date: June 17, 2004Applicant: Fina Technology Inc.Inventors: Kenneth Paul Blackmon, Luis Paulo Barthel-Rosa, Shabbir Ahmedbhai Malbari, David J. Rauscher, Michel M. Daumerie
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Publication number: 20040048991Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity. Consequently, the curve of storage modulus (G′) v. temperature is shifted such that the film achieves the same storage modulus at a lower temperature enabling faster throughput of polypropylene film through a high-speed tenter.Type: ApplicationFiled: September 10, 2003Publication date: March 11, 2004Applicant: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, David J. Rauscher, Michael Ray Wallace
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Patent number: 6667380Abstract: Processes for the formulation of Ziegler-type catalysts from a plurality of catalyst components including transition metal, organosilicon electron donor, and organoaluminum co-catalyst components. The components are mixed together in the course of formulating the Ziegler-type catalyst to be charged to an olefin polymerization reactor. Several orders of addition of the catalyst components can be used in formulating the Ziegler catalyst. One involves mixing of the transition metal component with the organoaluminum co-catalyst to formulate a mixture having an aluminum/transition metal mole ratio of at least 200. This mixture is combined with the organosilicon electron donor component to produce a Ziegler-type catalyst formulation having an aluminum/silicon mole ratio of no more than 50. There may be an initial pre-polymerization of the catalyst prior to introducing the catalyst into an olefin polymerization reactor.Type: GrantFiled: August 22, 2000Date of Patent: December 23, 2003Assignee: Fina Technology, Inc.Inventors: Edwar S. Shamshoum, David J. Rauscher, Shabbir A. Malbari
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Patent number: 6657025Abstract: A method of preparing ultra high melt flow polypropylene having reduced xylene solubles is provided. The method utilizes a diether internal donor-containing Ziegler-Natta catalyst system to polymerize propylene. The polypropylene produced is characterized by having a melt flow of at least about 300 g/10 min and a xylene solubles of not more than about 3.5% and no peroxide residue. The catalyst system may also include an internal phthalate donor. The method of the invention allows the amount of external donors to be reduced, or even eliminated, without significant increases in xylene solubles.Type: GrantFiled: January 11, 2002Date of Patent: December 2, 2003Assignee: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, Luis Paulo Barthel-Rosa, Shabbir Ahmedbhai Malbari, David J. Rauscher, Michel M. Daumerie
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Patent number: 6657024Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity. Consequently, the curve of storage modulus (G′) v. temperature is shifted such that the film achieves the same storage modulus at a lower temperature enabling faster throughput of polypropylene film through a high-speed tenter.Type: GrantFiled: September 3, 2002Date of Patent: December 2, 2003Assignee: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, David J. Rauscher, Michael Ray Wallace
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Patent number: 6489411Abstract: Processes for the polymerization of olefins with Zeigler-type catalyst systems which involve transition metal catalyst components comprising 4, 5 or 6 transition metals incorporating internal electron donors to provide desired polymerization characteristics, including yield and polymer characteristics. Specific olefins used in the polymerization process are C2-C4 alpha olefins such as propylene in the production of stereoregular polypropylene. The catalyst system comprised a transition metal component having an internal electron donor in an amount providing an internal donor/transition metal mole ratio of no more than 2/3. This is combined with an organoaluminum co-catalyst component to provide a precusor mixture having an aluminum/transition metal mole ration of at least 100. The precusor mixture is combined with an organosilicon external electron donor component in an amount to provide an aluminum/silicon mole ration of no more than 200.Type: GrantFiled: August 30, 2000Date of Patent: December 3, 2002Assignee: Fina Technology, Inc.Inventors: Edwar S. Shamshoum, David J. Rauscher, Shabbir A. Malbari
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Publication number: 20020161139Abstract: A method of preparing ultra high melt flow polypropylene having reduced xylene solubles is provided. The method utilizes a diether internal donor-containing Ziegler-Natta catalyst system to polymerize propylene. The polypropylene produced is characterized by having a melt flow of at least about 300 g/10 min and a xylene solubles of not more than about 3.5% and no peroxide residue. The catalyst system may also include an internal phthalate donor. The method of the invention allows the amount of external donors to be reduced, or even eliminated, without significant increases in xylene solubles.Type: ApplicationFiled: January 11, 2002Publication date: October 31, 2002Inventors: Kenneth Paul Blackmon, Luis Paulo Barthel-Rosa, Shabbir Ahmedbhai Malbari, David J. Rauscher, Michel M. Daumerie