Patents by Inventor Philippe P. Maillot
Philippe P. Maillot 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: 11179700Abstract: The present invention provides materials for improving the ignition of gaseous reactants in metal catalyzed oxidation reactions comprising a metal catalyst gauze, preferably, a platinum/rhodium catalyst gauze, having in contact therewith, from 0.5 to 1.5 wt. %, based on the weight of the metal catalyst gauze, of one or more pieces of previously used metal catalyst gauze. Further, methods of making the metal catalyst materials comprise shaping the pieces of previously used metal catalyst gauze and placing them equidistant from each other in contact with or on the surface of the metal catalyst gauze. And methods of using the materials comprise feeding into the reactor a gas mixture of oxygen or air and one or more reactant gases, and igniting the gas mixture at the surface of one or more or all of the pieces of previously used metal catalyst.Type: GrantFiled: February 20, 2017Date of Patent: November 23, 2021Assignee: Rohm and Haas CompanyInventors: Jon Busick, Philippe P. Maillot, Joy L. Mendoza
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Publication number: 20200230577Abstract: The present invention provides materials for improving the ignition of gaseous reactants in metal catalyzed oxidation reactions comprising a metal catalyst gauze, preferably, a platinum/rhodium catalyst gauze, having in contact therewith, from 0.5 to 1.5 wt. %, based on the weight of the metal catalyst gauze, of one or more pieces of previously used metal catalyst gauze. Further, methods of making the metal catalyst materials comprise shaping the pieces of previously used metal catalyst gauze and placing them equidistant from each other in contact with or on the surface of the metal catalyst gauze. And methods of using the materials comprise feeding into the reactor a gas mixture of oxygen or air and one or more reactant gases, and igniting the gas mixture at the surface of one or more or all of the pieces of previously used metal catalyst.Type: ApplicationFiled: February 20, 2017Publication date: July 23, 2020Inventors: Jon Busick, Philippe P. Maillot, Joy L. Mendoza
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Methods of using N-oxyl polymerization inhibitor in a wash settler for preparing methyl methacrylate
Patent number: 10640449Abstract: The present invention provides methods comprising washing or, preferably, washing and neutralizing a sulfur acid containing crude MMA stream to generate a two phase stream containing at least methacrylic acid, methacrylamide (MAM), water and methanol, and an organic component containing methyl methacrylate and thereby form an aqueous component; including in any of the organic component, the aqueous component of a neutralized sulfur acid containing crude methyl methacrylate (MMA) stream or the organic component of a neutralized sulfur acid containing crude methyl methacrylate (MMA) stream one or more N-oxyl compound polymerization inhibitor; followed by separating the aqueous component from the organic component, thereby forming a treated crude MMA stream and an aqueous stream to remove residual (meth) acrylic acid.Type: GrantFiled: December 8, 2017Date of Patent: May 5, 2020Assignees: Dow Global Technologies LLC, Rohm and Haas CompanyInventors: Joseph Atkins, Philippe P. Maillot, Joy L. Mendoza, Alan E. Sopchik, Mingyu Ye -
METHODS OF USING N-OXYL POLYMERIZATION INHIBITOR IN A WASH SETTLER FOR PREPARING METHYL METHACRYLATE
Publication number: 20190345093Abstract: The present invention provides methods comprising washing or, preferably, washing and neutralizing a sulfur acid containing crude MMA stream to generate a two phase stream containing at least methacrylic acid, methacrylamide (MAM), water and methanol, and an organic component containing methyl methacrylate and thereby form an aqueous component; including in any of the organic component, the aqueous component of a neutralized sulfur acid containing crude methyl methacrylate (MMA) stream or the organic component of a neutralized sulfur acid containing crude methyl methacrylate (MMA) stream one or more N-oxyl compound polymerization inhibitor; followed by separating the aqueous component from the organic component, thereby forming a treated crude MMA stream and an aqueous stream to remove residual (meth) acrylic acid.Type: ApplicationFiled: December 8, 2017Publication date: November 14, 2019Inventors: Joseph Atkins, Philippe P. Maillot, Joy L. Mendoza, Alan E. Sopchik, Mingyu Ye -
Patent number: 10294190Abstract: Fouling of an MMA process is reduced by strategically removing an aqueous slip stream.Type: GrantFiled: October 13, 2015Date of Patent: May 21, 2019Assignee: Rohm and Haas CompanyInventors: Stacy W. Hoy, IV, Joy L. Mendoza, Mingyu Ye, Philippe P. Maillot
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Patent number: 10143998Abstract: The present invention provides materials for improving the ignition of gaseous reactants in metal catalyzed oxidation reactions comprising a metal catalyst gauze, preferably, a platinum/rhodium catalyst gauze, having in contact therewith, from 0.25 to 1.5 wt. %, based on the weight of the metal catalyst gauze, of one or more pieces of previously used metal catalyst gauze. Further, methods of making the metal catalyst materials comprise shaping the pieces of previously used metal catalyst gauze and placing them equidistant from each other in contact with or on the surface of the metal catalyst gauze. And methods of using the materials comprise feeding into the reactor a gas mixture of oxygen or air and one or more reactant gases, and igniting the gas mixture at the surface of one or more or all of the pieces of previously used metal catalyst.Type: GrantFiled: January 17, 2017Date of Patent: December 4, 2018Assignee: Rohm and Haas CompanyInventors: Jon Busick, Philippe P. Maillot, Joy L. Mendoza
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Patent number: 9932291Abstract: Fouling of an MMA process is reduced by acidifying a stream comprising recycled components.Type: GrantFiled: October 13, 2015Date of Patent: April 3, 2018Assignee: Rohm and Haas CompanyInventors: Joy L. Mendoza, Philippe P. Maillot, Mingyu Ye, Stacy W. Hoy, IV
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Publication number: 20170334827Abstract: Fouling of an MMA process is reduced by acidifying a stream comprising recycled components.Type: ApplicationFiled: October 13, 2015Publication date: November 23, 2017Inventors: Joy L. Mendoza, Philippe P. Maillot, Mingyu Ye, Stacy W. Hoy, IV
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Patent number: 9815097Abstract: Provided is a method for removing deposited solid residue from equipment used in the processing of (meth)acrylic acid or esters, including the steps of dissolving the solid residue in a cleaning solution comprising an organic carboxylic acid to produce a solid residue slurry; and removing the solid residue slurry from the equipment.Type: GrantFiled: September 13, 2012Date of Patent: November 14, 2017Assignee: Rohm and Haas CompanyInventors: Jamie J. Juliette, Philippe P. Maillot, Joy L. Mendoza
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Publication number: 20170298000Abstract: Fouling of an MMA process is reduced by strategically removing an aqueous slip stream.Type: ApplicationFiled: October 13, 2015Publication date: October 19, 2017Inventors: Stacy W. Hoy, IV, Joy L. Mendoza, Mingyu Ye, Philippe P. Maillot
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Publication number: 20170225152Abstract: The present invention provides materials for improving the ignition of gaseous reactants in metal catalyzed oxidation reactions comprising a metal catalyst gauze, preferably, a platinum/rhodium catalyst gauze, having in contact therewith, from 0.25 to 1.5 wt. %, based on the weight of the metal catalyst gauze, of one or more pieces of previously used metal catalyst gauze. Further, methods of making the metal catalyst materials comprise shaping the pieces of previously used metal catalyst gauze and placing them equidistant from each other in contact with or on the surface of the metal catalyst gauze. And methods of using the materials comprise feeding into the reactor a gas mixture of oxygen or air and one or more reactant gases, and igniting the gas mixture at the surface of one or more or all of the pieces of previously used metal catalyst.Type: ApplicationFiled: January 17, 2017Publication date: August 10, 2017Inventors: Jon Busick, Philippe P. Maillot, Joy L. Mendoza
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Publication number: 20170056846Abstract: A static mixer (10) for combining a first fluid and a second fluid. The static mixer (10) including a plurality of plates (18, 24, 32, 40) having orifices (20, 26, 28) formed therethrough. As the first fluid and the second fluid pass through the static mixer (10), the fluids are combined and mixed.Type: ApplicationFiled: May 8, 2015Publication date: March 2, 2017Inventors: Zhao Yu, Michael D. Cloeter, Joy L. Mendoza, Philippe P. Maillot, Stacy W. Hoy, IV
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Patent number: 9416092Abstract: A transesterification process produces a (meth)acrylate ester product from a mixture comprising an alkyl(meth)acrylate reactant, an alcohol reactant, a catalyst, and a polymerization inhibitor. The mixture is subjected to reaction conditions sufficient to produce a product (meth)acrylate and a product alcohol, which are different than the reactants.Type: GrantFiled: February 11, 2013Date of Patent: August 16, 2016Assignee: Rohm and Haas CompanyInventors: David A. Flosser, Philippe P. Maillot, Nawal K. Sharma, Alejandro Ceron, Mingyu Ye
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Patent number: 9394224Abstract: A transesterification process produces a (meth)acrylate ester product from a mixture comprising an alkyl(meth)acrylate reactant, an alcohol reactant, a catalyst, and a polymerization inhibitor, wherein the water content in the reaction zone at the start of the transesterification step is from 0.2 to 1.1 weight percent, based on the weight of the materials in the reaction zone. The mixture is subjected to reaction conditions sufficient to produce a product (meth)acrylate and a product alcohol, which are different than the reactants.Type: GrantFiled: February 11, 2013Date of Patent: July 19, 2016Assignee: Rohm and Haas CompanyInventors: David A. Flosser, Philippe P. Maillot, Nawal K. Sharma, Alejandro Ceron, Mingyu Ye
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Patent number: 9067880Abstract: This invention provides a process for reducing biacetyl in alpha-, beta-unsaturated carboxylic acid esters, particularly in acrylic or methacrylic (hereinafter “(meth)acrylic”) esters, which comprise low levels of weak acid.Type: GrantFiled: October 13, 2011Date of Patent: June 30, 2015Inventors: Michael A. Curtis, David A. Flosser, Jamie J. Juliette, Philippe P. Maillot, Donna Williams
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Publication number: 20150045583Abstract: A transesterification process produces a (meth)acrylate ester product from a mixture comprising an alkyl(meth)acrylate reactant, an alcohol reactant, a catalyst, and a polymerization inhibitor. The mixture is subjected to reaction conditions sufficient to produce a product (meth)acrylate and a product alcohol, which are different than the reactants.Type: ApplicationFiled: February 11, 2013Publication date: February 12, 2015Applicant: ROHM AND HAAS COMPANYInventors: David A. Flosser, Philippe P. Maillot, Nawal K. Sharma, Alejandro Ceron, Mingyu Ye
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Publication number: 20150045578Abstract: A transesterification process produces a (meth)acrylate ester product from a mixture comprising an alkyl(meth)acrylate reactant, an alcohol reactant, a catalyst, and a polymerization inhibitor, wherein the water content in the reaction zone at the start of the transesterification step is from 0.2 to 1.1 weight percent, based on the weight of the materials in the reaction zone. The mixture is subjected to reaction conditions sufficient to produce a product (meth)acrylate and a product alcohol, which are different than the reactants.Type: ApplicationFiled: February 11, 2013Publication date: February 12, 2015Applicant: ROHM AND HAAS COMPANYInventors: David A. Flosser, Philippe P. Maillot, Nawal K. Sharma, Alejandro Ceron, Mingyu Ye
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Publication number: 20140338704Abstract: Provided is a method for removing deposited solid residue from equipment used in the processing of (meth)acrylic acid or esters, including the steps of dissolving the solid residue in a cleaning solution comprising an organic carboxylic acid to produce a solid residue slurry; and removing the solid residue slurry from the equipment.Type: ApplicationFiled: September 13, 2012Publication date: November 20, 2014Inventors: Jamie J. Juliette, Philippe P. Maillot, Joy L. Mendoza
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Publication number: 20140200366Abstract: The present invention provides a method for reducing accumulation of solid materials when manufacturing a (meth)acrylic acid ester having low biacetyl content (less than 2 ppm) by adding an aromatic diamine under conditions which provide sufficient residence time and thorough mixing to react up to 100% by weight of the biacetyl in the crude (meth)acrylic acid ester stream, prior to separation and purification. A feedback method is also provided for reducing solids accumulation in the separation and purification equipment of such processes by measuring the biacetyl content and adjusting the aromatic diamine addition rate so that excess aromatic diamine can be minimized. A third embodiment provides a method for reversing an accumulation of solid materials during such processes, while still producing a (meth)acrylic acid ester having low biacetyl content (less than 2 ppm), by reducing or ceasing the addition rate of aromatic diamine for a period of time.Type: ApplicationFiled: June 1, 2012Publication date: July 17, 2014Applicant: ROHM AND HAAS COMPANYInventors: Michael A. Curtis, Michael S. Decourcy, David A. Flosser, Melissa Harris, Jamie J. Juliette, Philippe P. Maillot
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Publication number: 20130217914Abstract: This invention provides a process for reducing biacetyl in alpha-, beta-unsaturated carboxylic acid esters, particularly in acrylic or methacrylic (hereinafter “(meth)acrylic”) esters, which comprise low levels of weak acid.Type: ApplicationFiled: October 13, 2011Publication date: August 22, 2013Applicant: ROHM AND HAAS COMPANYInventors: Michael A. Curtis, David A. Flosser, Jamie J. Juliette, Philippe P. Maillot, Donna Williams