Patents by Inventor Charles Stanley Speed
Charles Stanley Speed 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).
-
Patent number: 7981984Abstract: This invention relates to a process to polymerize olefins comprising contacting a catalyst or catalyst system with olefin(s) in the presence of a fluorocarbon at a temperature above the onset melting point of the polymer. This invention also relates to a solution process to polymerize olefins comprising contacting a catalyst or catalyst system with olefin(s) in the presence of a fluorocarbon at a temperature above the onset melting point of the polymer.Type: GrantFiled: June 20, 2005Date of Patent: July 19, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Peijun Jiang, John Richard Shutt, Charles Stanley Speed, Robert Olds Hagerty, Pradeep P. Shirodkar
-
Patent number: 7858736Abstract: This invention relates to a process comprising contacting an polymerization reactor effluent with a fluorinated hydrocarbon and thereafter recovering olefin polymer, where the fluorinated hydrocarbon is present at 5 volume % to 99 volume % based upon the volume of the effluent and the fluorinated hydrocarbon, and where the polymerization is a continuous polymerization of at least 75 mole % of hydrocarbon monomers, based upon the total moles of monomer present in the reactor.Type: GrantFiled: June 20, 2005Date of Patent: December 28, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Peijun Jiang, Robert Olds Hagerty, John Richard Shutt, Charles Stanley Speed, Randall B. Laird, Kevin B. Stavens, Larry L. Iaccino
-
Patent number: 7799882Abstract: This invention relates to a multiple phase polymerization process to produce polyolefins comprising contacting olefins and a homogeneous catalyst or catalyst system at a temperature between the melting point of the dry polymer and 80° C. below the melting point of the dry polymer in the presence of a fluorinated hydrocarbon. This invention also relates to a process to produce polyethylene comprising contacting a homogeneous catalyst or catalyst system with ethylene and from 0 to 40 weight % of one or more C3 to C40 olefin comonomer(s) in the presence of a fluorinated hydrocarbon and optionally a hydrocarbon solvent at a temperature below the reaction medium melting point.Type: GrantFiled: June 20, 2005Date of Patent: September 21, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Peijun Jiang, John Richard Shutt, Charles Stanley Speed, Robert Olds Hagerty, Pradeep P. Shirodkar
-
Patent number: 7662892Abstract: This invention relates to a continuous process to prepare olefin impact copolymers comprising producing a semi-crystalline olefin polymer in a first reactor and then transferring the reactor contents to a second reactor where a low crystallinity olefin polymer is produced in the presence of the semi-crystalline polymer, where a fluorinated hydrocarbon is present in the polymerization medium of the first reactor, the second reactor or both reactors.Type: GrantFiled: June 20, 2005Date of Patent: February 16, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Peijun Jiang, John Richard Shutt, Charles Stanley Speed, Pradeep P. Shirodkar, Robert Olds Hagerty, Larry L. Iaccino
-
Patent number: 7414100Abstract: This invention relates to a process to increase the amount of polymer solute in a polymerization medium or effluent comprising introducing a fluorocarbon into the polymerization medium or effluent in an amount effective to increase the amount of polymer solute in the polymerization medium or effluent by at least 3% without causing precipitation of polymer solute from the polymerization medium or effluent, as compared to the same polymerization medium or effluent without the fluorocarbon present. This invention also relates to a process to reduce the viscosity of a polymerization medium or effluent comprising introducing a fluorocarbon into the polymerization medium or effluent in an amount effective to reduce the viscosity of the polymerization medium or effluent by at least 3% without causing precipitation of polymer solute from the polymerization medium or effluent, as compared to the same polymerization medium or effluent without the fluorocarbon present.Type: GrantFiled: June 20, 2005Date of Patent: August 19, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Peijun Jiang, John Richard Shutt, Charles Stanley Speed, Randall B. Laird, Kevin Bruce Stavens, Robert Olds Hagerty
-
Patent number: 6255410Abstract: The invention relates to processes for producing polyolefins at pressures substantially below conventional high pressure conditions in two-phase conditions below the cloud point. The invention can involve a continuous system with optional recycle.Type: GrantFiled: September 2, 1997Date of Patent: July 3, 2001Assignee: Exxon Mobil Chemical Patents Inc.Inventors: Hayashi Shigekauzu, Makoto Sugawara, Norbert Baron, Charles Stanley Speed, Jo Ann Marie Canich, Howard Curtis Welborn, Jr.
-
Patent number: 5907021Abstract: A polymerization process for olefinically or acetylenically unsaturated monomers is disclosed. The process comprises contacting the one or more of the monomers with a suitable ionic catalyst system in the presence of a long-chain, linear alkyl ligand-containing organo aluminum compound. Preferred ionic catalysts are derived from 1) bridged hafnium compounds, 2) silicon bridged monocyclopentadienyl titanium compounds and 3) unbridged, bulky Group 15 containing, bulky monocyclopentadienyl titanium compounds, and a non-coordinating anion precursor compound. A class of preferred anion precursors consists of hydrated salts comprising a Group 1 or 2 cation and a non-coordinating anion. Using the preferred ionic catalysts high temperature processes, e.g., at or above 90.degree. C. can be conducted to prepare polyolefins, particularly ethylene copolymers, of both high molecular weight and high comonomer content.Type: GrantFiled: March 26, 1998Date of Patent: May 25, 1999Assignee: Exxon Chemical Patents Inc.Inventors: Howard William Turner, Charles Stanley Speed, Bernard Jean Folie, Donna Jean Crowther, George Alan Vaughan, Richard Allen Fisher, John Flexer Walzer, Jr.
-
Patent number: 5767208Abstract: A polymerization process for olefinically or acetylenically unsaturated monomers is disclosed. The process comprises contacting the one or more of the monomers with a suitable ionic catalyst system in the presence of a long-chain, linear alkyl ligand-containing organo aluminum compound. Preferred ionic catalysts are derived from 1) bridged hafnium compounds, 2) silicon bridged monocyclopentadienyl titanium compounds and 3) unbridged, bulky Group 15 containing, bulky monocyclopentadienyl titanium compounds, and a non-coordinating anion precursor compound. A class of preferred anion precursors consists of hydrated salts comprising a Group 1 or 2 cation and a non-coordinating anion. Using the preferred ionic catalysts high temperature processes, e.g., at or above 90.degree. C. can be conducted to prepare polyolefins, particularly ethylene copolymers, of both high molecular weight and high comonomer content.Type: GrantFiled: December 18, 1996Date of Patent: June 16, 1998Assignee: Exxon Chemical Patents Inc.Inventors: Howard William Turner, George Alan Vaughan, Richard Allen Fisher, John Flexer Walzer, Jr., Charles Stanley Speed, Bernard Jean Folie, Donna Jean Crowther