Patents by Inventor Marc A. Springs
Marc A. Springs 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: 11649302Abstract: A magnesium halide-supported titanium procatalyst, a catalyst prepared therefrom, an enhanced catalyst consists essentially of a product of a reaction of the magnesium halide-supported titanium procatalyst and a hydrocarbylaluminoxane. Also methods of preparing the (pro)catalysts, a method of polymerizing an olefin, and a polyolefin made by the polymerization method.Type: GrantFiled: September 23, 2021Date of Patent: May 16, 2023Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Linfeng Chen, Marc A. Springs, Mehmet Demirors
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Publication number: 20220010038Abstract: A magnesium halide-supported titanium procatalyst, a catalyst prepared therefrom, an enhanced catalyst consists essentially of a product of a reaction of the magnesium halide-supported titanium procatalyst and a hydrocarbylaluminoxane. Also methods of preparing the (pro)catalysts, a method of polymerizing an olefin, and a polyolefin made by the polymerization method.Type: ApplicationFiled: September 23, 2021Publication date: January 13, 2022Inventors: Linfeng Chen, Marc A. Springs, Mehmet Demirors
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Patent number: 11155650Abstract: A magnesium halide-supported titanium procatalyst, a catalyst prepared therefrom, an enhanced catalyst consists essentially of a product of a reaction of the magnesium halide-supported titanium procatalyst and a hydrocarbylaluminoxane. Also methods of preparing the (pro)catalysts, a method of polymerizing an olefin, and a polyolefin made by the polymerization method.Type: GrantFiled: September 21, 2017Date of Patent: October 26, 2021Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Linfeng Chen, Marc A. Springs, Mehmet Demirors
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Publication number: 20190322774Abstract: The present disclosure relates to novel procatalyst compositions including a titanium moiety, a magnesium halide support, a hydrocarbon solution in which the magnesium halide support is formed, and an electron donor modifier having the formula (I). The present disclosure further relates to a one-pot process for preparing the novel procatalyst compositions, as well as use of the novel procatalyst compositions in solution processes for polymerization of ethylene and at least one additional polymerizable monomer to form a polymer composition.Type: ApplicationFiled: June 29, 2017Publication date: October 24, 2019Inventors: Linfeng Chen, Teresa P. Karjala, Mehmet Demirors, Douglas S. Ginger, Marc A. Springs
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Publication number: 20190256618Abstract: The present disclosure relates to novel procatalyst compositions including a titanium moiety, a magnesium halide support, a hydrocarbon solution in which the magnesium halide support is formed, and an electron donor modifier described herein. The present disclosure further relates to a one-pot process for preparing the novel procatalyst compositions, as well as use of the novel procatalyst compositions in solution processes for polymerization of ethylene and at least one addition polymerizable monomer to form a polymer composition.Type: ApplicationFiled: June 29, 2017Publication date: August 22, 2019Inventors: Linfeng Chen, Teresa P. Karjaia, Mehmet Demirors, Douglas S. Ginger, Marc A. Springs
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Publication number: 20190218316Abstract: A magnesium halide-supported titanium procatalyst, a catalyst prepared therefrom, an enhanced catalyst consists essentially of a product of a reaction of the magnesium halide-supported titanium procatalyst and a hydrocarbylaluminoxane. Also methods of preparing the (pro)catalysts, a method of polymerizing an olefin, and a polyolefin made by the polymerization method.Type: ApplicationFiled: September 21, 2017Publication date: July 18, 2019Inventors: Linfeng Chen, Marc A. Springs, Mehmet Demirors
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Patent number: 8273449Abstract: The instant invention is a polyethylene film, and method of making the same. The polyethylene film according to instant invention includes at least one heterogeneously branched ethylene/?-olefin copolymer having a density in the range of about 0.910 to about 0.930 g/cm3, a molecular weight distribution in the range of about 2.8 to 3.8, a melt index (I2) in the range of about 0.3 to about 4 g/10 min, and an I10/I2 ratio in the range of 6.5 to about 7.8. The film has a normalized dart impact strength of equal or greater than (6666-7012*density) g/mil, a normalized tear strength of equal or greater than (440*e?(density?0.915)2/2*(0.00949)2) g/mil, and a haze in the range of 3 to 10 percent. The method of making the polyethylene film according to instant invention includes the following steps: (1) providing at least one heterogeneously branched ethylene/?-olefin copolymer having a density in the range of about 0.910 to about 0.930 g/cm3, a molecular weight distribution in the range of about 2.8 to 3.Type: GrantFiled: April 4, 2008Date of Patent: September 25, 2012Assignee: Dow Global Technologies LLCInventors: Sylvie Desjardins, Marc A. Springs, Phillip D. Hustad, Nathan J. Wiker, Jesus Nieto, Wayde V. Konze
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Patent number: 8034878Abstract: The invention provides a comprising one or more ethylene interpolymers, and wherein the interpolymers, or the composition, has a melt viscosity from 1 to 30,000 cP at 177° C., and wherein at least one ethylene interpolymer has an Rv from 0.3 to 0.99. The invention further provides a composition comprising at least one low molecular weight (LMW) ethylene interpolymer, and at least one high molecular weight (HMW) ethylene interpolymer, and wherein the composition has a melt viscosity from 1 to 30,000 cP at 177° C., and wherein the sum of the Rv from the low molecular weight interpolymer and the high molecular weight interpolymer is from 0.3 to 2. The invention further provides for processes of making such compositions, processes for functionalizing the interpolymer(s) of such compositions, and articles comprising at least one component prepared from an inventive composition.Type: GrantFiled: December 12, 2006Date of Patent: October 11, 2011Assignee: Dow Global Technologies LLCInventors: Teresa P. Karjala, Selim Yalvac, Cynthia L. Rickey, Sylvie Desjardins, Marc A. Springs
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Publication number: 20100119793Abstract: The instant invention is a polyethylene film, and method of making the same. The polyethylene film according to instant invention includes at least one heterogeneously branched ethylene/?-olefin copolymer having a density in the range of about 0.910 to about 0.930 g/cm3, a molecular weight distribution in the range of about 2.8 to 3.8, a melt index (I2) in the range of about 0.3 to about 4 g/10 min, and an I10/I2 ratio in the range of 6.5 to about 7.8. The film has a normalized dart impact strength of equal or greater than (6666-7012*density) g/mil, a normalized tear strength of equal or greater than (440*e?(density?0.915)2/2*(0.00949)2) g/mil, and a haze in the range of 3 to 10 percent. The method of making the polyethylene film according to instant invention includes the following steps: (1) providing at least one heterogeneously branched ethylene/?-olefin copolymer having a density in the range of about 0.910 to about 0.930 g/cm3, a molecular weight distribution in the range of about 2.8 to 3.Type: ApplicationFiled: April 4, 2008Publication date: May 13, 2010Inventors: Sylvie Desjardins, Marc A. Springs, Phillip D. Hustad, Nathan J. Wiker, Jesus Nieto, Wayde V. Konze
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Publication number: 20090215190Abstract: The present invention generally relates to an apparatus and method for running a plurality of essentially simultaneous exothermic reactions, endothermic reactions, or a combination thereof in sealed reactors and obtaining physico-chemical data, preferably temperature data, and, optionally, time data, for the reactions, wherein reaction mixtures in the sealed reactors are adiabatically thermally insulated from one another so that temperature in one sealed reactor does not materially affect temperature in any other, including an adjacent, sealed reactor.Type: ApplicationFiled: February 20, 2009Publication date: August 27, 2009Inventors: Pamela J. Stirn, Charles A. Nielsen, Sylvie Desjardins, David R. Neithamer, Paul L. Morabito, Marc A. Springs
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Publication number: 20080306217Abstract: The invention provides a comprising one or more ethylene interpolymers, and wherein the interpolymers, or the composition, has a melt viscosity from 1 to 30,000 cP at 177° C., and wherein at least one ethylene interpolymer has an Rv from 0.3 to 0.99. The invention further provides a composition comprising at least one low molecular weight (LMW) ethylene interpolymer, and at least one high molecular weight (HMW) ethylene interpolymer, and wherein the composition has a melt viscosity from 1 to 30,000 cP at 177° C., and wherein the sum of the Rv from the low molecular weight interpolymer and the high molecular weight interpolymer is from 0.3 to 2. The invention further provides for processes of making such compositions, processes for functionalizing the interpolymer(s) of such compositions, and articles comprising at least one component prepared from an inventive composition.Type: ApplicationFiled: December 12, 2006Publication date: December 11, 2008Inventors: Teresa P. Karjala, Selim Yalvac, Cynthia L. Rickey, Sylvie Desjardins, Marc A. Springs
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Patent number: 6852811Abstract: The subject invention provides a process for preparing an olefin polymerization catalyst wherein a calcined and passivated silica support (support precursor) is sequentially contacted with a first solution of a metal complex or of a cocatalyst, and thereafter with a second solution of the other of the metal complex or the cocatalyst, wherein the second solution is provided in an amount such that 100 percent of the pore volume of the support precursor is not exceeded. Optionally, the compatible solvent of the first and/or second solutions is removed. The subject invention further provides a process for polymerizing one or more ?-olefins in the presence of the olefin polymerization catalyst prepared by the process of the invention.Type: GrantFiled: December 6, 1999Date of Patent: February 8, 2005Assignee: The Dow Chemical CompanyInventors: Edmund M. Carnahan, Ian M. Munro, Marc A. Springs
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Publication number: 20020072577Abstract: The present invention relates to supported catalyst composition for an addition polymerization, a process to prepare the same and the use thereof in an addition polymerization, wherein the composition comprises: (A) a particulated, solid support material; (B) an activator which is an ammonium salt of a compatible, noncoordinating anion, A−, said anion, A− containing a remnant formed by reaction of a non-ionic Lewis acid and a moiety containing an active hydrogen; and (C) a Group 4 metal complex catalyst.Type: ApplicationFiled: October 1, 2001Publication date: June 13, 2002Applicant: The Dow Chemical CompanyInventors: Grant B. Jacobsen, Marc A. Springs, Lawrence D. Wilson
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Patent number: 5798314Abstract: A supported catalyst component for an olefin polymerization catalyst consisting essentially of a solid particulate support and a magnesium halide; and an olefin polymerization catalyst consisting essentially of a solid particulate support and a magnesium halide, a Group 4 or 5 transition metal compound, and a Group 2 or 13 organometallic compound, and wherein a majority of particles of the solid particulate support are in the form of an agglomerate of subparticles.Type: GrantFiled: June 4, 1996Date of Patent: August 25, 1998Assignee: The Dow Chemical CompanyInventors: Lee Spencer, Marc A. Springs
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Patent number: 5661097Abstract: A supported catalyst component for an olefin polymerization catalyst comprising a solid particulate support, a magnesium halide, and optionally a Group 4 or 5 transition metal compound, a Group 2 or 13 organometal compound, and an electron donor, wherein a majority of particles of the solid particulate support is in the form of an agglomerate of subparticles. A process for preparing this supported catalyst component. A catalyst composition comprising this catalyst component and a cocatalyst. An olefin polymerization process using such a catalyst composition.Type: GrantFiled: August 12, 1994Date of Patent: August 26, 1997Assignee: The Dow Chemical CompanyInventors: Lee Spencer, Marc A. Springs
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Patent number: 5633419Abstract: A supported catalyst component for an olefin polymerization catalyst comprising a solid particulate support, a magnesium halide, and optionally a Group 4 or 5 transition metal compound, a Group 2 or 13 organometal compound, and an electron donor, wherein a majority of particles of the solid particulate support is in the form of an agglomerate of subparticles. A process for preparing this supported catalyst component. A catalyst composition comprising this catalyst component and a cocatalyst. An olefin polymerization process using such a catalyst composition.Type: GrantFiled: June 6, 1995Date of Patent: May 27, 1997Assignee: The Dow Chemical CompanyInventors: Lee Spencer, Marc A. Springs