Patents by Inventor Ron Postma
Ron Postma 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: 9429365Abstract: In a method of manufacturing a heat exchanger tube sheet sealing elements are arranged on respective ends of heat exchanger tubes. Said ends of the heat exchanger tubes having the sealing elements are arranged at predetermined positions in a mold. Said ends of the heat exchanger tubes are sealed such that a tube sheet material to be casted in the mold does not enter the heat exchanger tubes during casting of the tube sheet material. A tube sheet material is casted in the mold for covering the sealing elements. The tube sheet material is hardened in the mold.Type: GrantFiled: May 6, 2011Date of Patent: August 30, 2016Assignee: HEATMATRIX GROUP B.V.Inventors: Ron Postma, Bart Jan Van Den Berg, Robert Sakko, Hans Constant Dikhoff
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Patent number: 9227947Abstract: The invention relates to a process for the manufacture of epichlorohydrin (“ECH”) by catalytic oxidation of allyl chloride (“AC”) with an oxidant wherein the catalytic oxidation is performed in an aqueous reaction medium, wherein a water-soluble manganese complex is used as oxidation catalyst, followed by the isolation of epichlorohydrin.Type: GrantFiled: May 22, 2014Date of Patent: January 5, 2016Assignee: HEXION INC.Inventors: Ron Postma, Prasad Muppa
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Patent number: 9199951Abstract: The invention relates to a process for the manufacture of a 1,2-epoxide by catalytic oxidation of a terminal olefin with hydrogen peroxide wherein the catalytic oxidation is performed in a biphasic system comprising an organic phase and an aqueous reaction medium, wherein a water-soluble manganese complex is used as oxidation catalyst, wherein a terminal olefin is used with a solubility at 20° C. of at least 0.01 to 100 g in 1 liter water, and wherein the molar ratio of terminal olefin to hydrogen peroxide is in the range of from 1:0.1 to 1:2.Type: GrantFiled: March 24, 2014Date of Patent: December 1, 2015Assignee: HEXION INC.Inventors: Ron Postma, Prasad Muppa
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Patent number: 9174955Abstract: The invention relates to a process for the manufacture of an epoxyethyl carboxylate or glycidyl carboxylate, including reacting a vinyl carboxylate or an allyl carboxylate using an oxidant and a water-soluble manganese complex in an aqueous reaction medium, and the water-soluble manganese complex comprises an oxidation catalyst, characterized in that the water-soluble manganese complex is a mononuclear species of the general formula (I) [LMnX3]Y (I), or a binuclear species of the general formula (II): [LMn(?-X)3MnL]Yn (II), wherein Mn is a manganese; L is a ligand and each L is independently a polydentate ligand, each X is independently a coordinating species and each ?-X is independently a bridging coordinating species, Y is a non-coordinating counter ion, and wherein the epoxidation is carried out at a pH in the range of from 1.0 to 7.0.Type: GrantFiled: January 26, 2011Date of Patent: November 3, 2015Assignee: HEXION INC.Inventors: Prasad Muppa, Ron Postma, Caspar Schoolderman, Sandra Rens, Kostas Stoitsas
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Patent number: 9145378Abstract: Processes are provided for the formation of an epoxyethyl ether or a glycidyl ether. In one embodiment, a process is provided for the manufacture of an epoxyethyl ether or glycidyl ether including reacting a vinyl ether or an allyl ether with an oxidant in the presence of a water-soluble manganese complex in an aqueous reaction medium, wherein the water-soluble manganese complex comprises an oxidation catalyst, characterized in that the water-soluble manganese complex is a mononuclear complex of the general formula (I): [LMnX3]Y (I), or a binuclear complex of the general formula (II): [LMn(?-X)3MnL](Y)n (II), wherein Mn is a manganese; L or each L independently is a polydentate ligand, each X independently is a coordinating species and each ?-X independently is a bridging coordinating species, Y is a non-coordinating counter ion, and wherein the epoxidation is carried out at a pH in the range of from 1.0 to 6.0. The invention also relates to epoxyethyl ethers.Type: GrantFiled: January 26, 2011Date of Patent: September 29, 2015Assignee: HEXION INC.Inventors: Prasad Muppa, Ron Postma, Caspar Schoolderman, Sandra Rens, Kostas Stoitsas
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Patent number: 9102640Abstract: Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process.Type: GrantFiled: February 19, 2014Date of Patent: August 11, 2015Assignee: Evonik Degussa GmbHInventors: Prasad Muppa, Ron Postma, Bart Van Den Berg, Jürgen Stock, Holger Wiederhold, Hans Rausch, Jörg Schallenberg, Stefan Bernhardt
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Patent number: 9091488Abstract: The invention relates to an evaporator (10) for heat exchange between fluids, comprising a housing (12) having at least one inlet (20; 27) and at least one outlet (26, 28; 29) for each fluid, the inlet and outlet for each fluid being connected to one another by a flow path (38; 58), the flow path (38) of a first fluid comprising multiple heat exchange modules (60) comprising at least one longitudinal hollow tube (36), wherein the modules (60) are arranged in a stack spaced apart from the housing (12) leaving free a gap (59), and wherein a module (60) is provided with at least one connector (50) for connecting to a co-operating connector of an adjacent module, such that the gap (59) between the housing and the stack defining at least a liquid recycle zone for containing the second fluid and a phase separation zone for separating a vapor phase and a liquid phase of the second fluid and the space (56) enclosed between adjacent modules in the stack defining a flow path (58) for a second fluid, parallel to the floType: GrantFiled: January 8, 2010Date of Patent: July 28, 2015Assignee: HeatMatrix Group B.V.Inventors: Ron Postma, Bart Jan Van Den Berg, Robert Sakko, Hans Constant Dikhoff
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Patent number: 8859790Abstract: Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process.Type: GrantFiled: January 26, 2011Date of Patent: October 14, 2014Assignee: Momentive Specialty Chemicals Inc.Inventors: Prasad Muppa, Ron Postma, Bart Van Den Berg, Juergen Stock, Holger Wiederhold, Hans Rausch, Jorg Schallenberg, Stefan Bernhardt
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Publication number: 20140296545Abstract: The invention relates to a process for the manufacture of a 1,2-epoxide by catalytic oxidation of a terminal olefin with hydrogen peroxide wherein the catalytic oxidation is performed in a biphasic system comprising an organic phase and an aqueous reaction medium, wherein a water-soluble manganese complex is used as oxidation catalyst, wherein a terminal olefin is used with a solubility at 20° C. of at least 0.01 to 100 g in 1 liter water, and wherein the molar ratio of terminal olefin to hydrogen peroxide is in the range of from 1:0.1 to 1:2.Type: ApplicationFiled: March 24, 2014Publication date: October 2, 2014Applicant: Momentive Specialty Chemicals Inc.Inventors: Ron Postma, Prasad Muppa
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Publication number: 20140256968Abstract: The invention relates to a process for the manufacture of epichlorohydrin (“ECH”) by catalytic oxidation of allyl chloride (“AC”) with an oxidant wherein the catalytic oxidation is performed in an aqueous reaction medium, wherein a water-soluble manganese complex is used as oxidation catalyst, followed by the isolation of epichlorohydrin.Type: ApplicationFiled: May 22, 2014Publication date: September 11, 2014Applicant: Momentive Specialty Chemicals Inc.Inventors: Ron POSTMA, Prasad MUPPA
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Publication number: 20140238649Abstract: The invention relates to a heat exchanger for heat exchange between fluids, comprising a housing having an inlet and an outlet for each fluid, the inlet and outlet for each fluid being connected to one another by a flow path, the flow path of a first fluid comprising multiple heat exchange modules comprising at least one longitudinal hollow tube, wherein the modules are arranged in a matrix configuration that comprises at least two columns of longitudinal tubes and at least two rows of longitudinal tubes, and wherein a module is provided with at least one connector for connecting to a co-operating connector of an adjacent module, such that the space enclosed between adjacent modules defines a flow path for a second fluid, parallel to the flow path for the first fluid.Type: ApplicationFiled: May 5, 2014Publication date: August 28, 2014Inventors: Ron Postma, Robert Sakko, Bart Van Den Berg, Hans Constant Dikhoff
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Patent number: 8802873Abstract: The invention relates to a process for the manufacture of epichlorohydrin (“ECH”) by catalytic oxidation of allyl chloride (“AC”) with an oxidant wherein the catalytic oxidation is performed in an aqueous reaction medium, wherein a water-soluble manganese complex is used as oxidation catalyst, followed by the isolation of epichlorohydrin.Type: GrantFiled: July 9, 2009Date of Patent: August 12, 2014Assignee: Momentive Specialty Chemicals Inc.Inventors: Ron Postma, Prasad Muppa
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Patent number: 8757248Abstract: The invention relates to a heat exchanger for heat exchange between fluids, comprising a housing having an inlet and an outlet for each fluid, the inlet and outlet for each fluid being connected to one another by a flow path, the flow path of a first fluid comprising multiple heat exchange modules comprising at least one longitudinal hollow tube, wherein the modules are arranged in a matrix configuration that comprises at least two columns of longitudinal tubes and at least two rows of longitudinal tubes, and wherein a module is provided with at least one connector for connecting to a co-operating connector of an adjacent module, such that the space enclosed between adjacent modules defines a flow path for a second fluid, parallel to the flow path for the first fluid.Type: GrantFiled: July 4, 2008Date of Patent: June 24, 2014Assignee: Heatmatrix Group B.V.Inventors: Ron Postma, Bart Van Den Berg, Robert Sakko, Hans Constant Dikhoff
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Publication number: 20140171666Abstract: Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process.Type: ApplicationFiled: February 19, 2014Publication date: June 19, 2014Applicant: Momentive Specialty Chemicals Inc.Inventors: Prasad MUPPA, Ron Postma, Bart Van Den Berg, Juergen Stock, Holger Wiederhold, Hans Rausch, Jörg Schallenberg, Stefan Bernhardt
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Patent number: 8735613Abstract: A process for the manufacture of propylene oxide (“PO”) by catalytic oxidation of propylene with an oxidant wherein the catalytic oxidation is performed in an aqueous reaction medium, comprising water with less than 10% by volume of cosolvents, wherein a water-soluble manganese complex is used as oxidation catalyst, characterized in that the water-soluble manganese complex is a mononuclear species of the general formula (I): [LMnX3]Y ??(I) or a binuclear species of the general formula (II): [LMn(?-X)3MnL]Y2 ??(II) wherein Mn is a manganese; L or each L independently is a polydentate ligand, each X independently is a coordinating species and each ?-X independently is a bridging coordinating species, whereas Y is an non-coordinating counterion, and wherein the catalytic oxidation is carried out at a pH in the range of from 1.5 to 6.0.Type: GrantFiled: November 24, 2010Date of Patent: May 27, 2014Assignee: Momentive Specialty Chemicals Inc.Inventors: Prasad Muppa, Caspar Schoolderman, Sandra Rens Van Der Lee, Ron Postma
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Patent number: 8729282Abstract: The invention relates to a process for the manufacture of a 1,2-epoxide by catalytic oxidation of a terminal olefin with hydrogen peroxide wherein the catalytic oxidation is performed in a biphasic system comprising an organic phase and an aqueous reaction medium, wherein a water-soluble manganese complex is used as oxidation catalyst, wherein a terminal olefin is used with a solubility at 20° C. of at least 0.01 to 100 g in 1 liter water, and wherein the molar ratio of terminal olefin to hydrogen peroxide is in the range of from 1:0.1 to 1:2.Type: GrantFiled: July 9, 2009Date of Patent: May 20, 2014Assignee: Momentive Specialty Chemicals Inc.Inventors: Ron Postma, Prasad Muppa
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Publication number: 20130105127Abstract: In a method of manufacturing a heat exchanger tube sheet sealing elements are arranged on respective ends of heat exchanger tubes. Said ends of the heat exchanger tubes having the sealing elements are arranged at predetermined positions in a mould. Said ends of the heat exchanger tubes are sealed such that a tube sheet material to be casted in the mould does not enter the heat exchanger tubes during casting of the tube sheet material. A tube sheet material is casted in the mould for covering the sealing elements. The tube sheet material is hardened in the mould.Type: ApplicationFiled: May 6, 2011Publication date: May 2, 2013Applicant: HEATMATRIX GROUP B.V.Inventors: Ron Postma, Bart Jan Van Den Berg, Robert Sakko, Hans Constant Dikhoff
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Publication number: 20130023680Abstract: Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process.Type: ApplicationFiled: January 26, 2011Publication date: January 24, 2013Inventors: Prasad Muppa, Ron Postma, Bart Van Den Berg, Juergen Stock, Holger Wiederhold, Hans Rausch, Jorg Schallenberg, Stefan Bernhardt
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Publication number: 20130006001Abstract: The invention relates to a process for the manufacture of an epoxyethyl carboxylate or glycidyl carboxylate, including reacting a vinyl carboxylate or an allyl carboxylate using an oxidant and a water-soluble manganese complex in an aqueous reaction medium, and the water-soluble manganese complex comprises an oxidation catalyst, characterized in that the water-soluble manganese complex is a mononuclear species of the general formula (I) [LMnX3]Y (I), or a binuclear species of the general formula (II): [LMn(??X)3MnL]Yn (II), wherein Mn is a manganese; L is a ligand and each L is independently a polydentate ligand, each X is independently a coordinating species and each ??X is independently a bridging coordinating species, Y is a non-coordinating counter ion, and wherein the epoxidation is carried out at a pH in the range of from 1.0 to 7.Type: ApplicationFiled: January 26, 2011Publication date: January 3, 2013Inventors: Prasad Muppa, Ron Postma, Caspar Schoolderman, Sandra Rens, Kostas Stoitsas
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Publication number: 20120330041Abstract: Processes are provided for the formation of an epoxyethyl ether or a glycidyl ether. In one embodiment, a process is provided for the manufacture of an epoxyethyl ether or glycidyl ether including reacting a vinyl ether or an allyl ether with an oxidant in the presence of a water-soluble manganese complex in an aqueous reaction medium, wherein the water-soluble manganese complex comprises an oxidation catalyst, characterized in that the water-soluble manganese complex is a mononuclear complex of the general formula (I): [LMnX3]Y (I), or a binuclear complex of the general formula (II): [LMn(?-X)3MnL](Y)n (II), wherein Mn is a manganese; L or each L independently is a polydentate ligand, each X independently is a coordinating species and each ?-X independently is a bridging coordinating species, Y is a non-coordinating counter ion, and wherein the epoxidation is carried out at a pH in the range of from 1.0 to 6.0. The invention also relates to epoxyethyl ethers.Type: ApplicationFiled: January 26, 2011Publication date: December 27, 2012Inventors: Prasad Muppa, Ron Postma, Caspar Schoolderman, Sandra Rens, Kostas Stoitsas