Patents by Inventor Max M. Tirtowidjojo
Max M. Tirtowidjojo 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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Publication number: 20140163265Abstract: Processes for the production of chlorinated propenes are provided. The present processes make use of a feedstock comprising 1,2,3-trichloropropane and chlorinates the 1,1,2,3-tetrachloropropane generated by the process prior to a dehydrochlorination step. Production of the less desirable pentachloropropane isomer, 1,1,2,3,3-pentachloropropane, is thus minimized. The present processes provide better reaction yield as compared to conventional processes that require dehydrochlorination of 1,1,2,3-tetrachloropropane prior to chlorinating the same. The present process can also generate anhydrous HCl as a byproduct that can be removed from the process and used as a feedstock for other processes, while limiting the production of waste water, thus providing further time and cost savings.Type: ApplicationFiled: August 1, 2012Publication date: June 12, 2014Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Max M. Tirtowidjojo, Barry B. Fish, David S. Laitar
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Publication number: 20140100394Abstract: Processes for the production of chlorinated propenes are provided. The present processes make use of a feedstream comprising 1,2-dichloropropane, a by-product in the production of chlorohydrin, as a low cost starting material, alone or in combination with 1,2,3-trichloropropane. Selectivity of the process is enhanced over conventional processes employing successive chlorinations and/or dehydrochlorinations, by conducting at least one chlorination in the presence of an ionic chlorination catalyst. The present processes may also generate anhydrous HCl as a byproduct that can be removed from the process and used as a feedstock for other processes, providing further time and cost savings.Type: ApplicationFiled: May 18, 2012Publication date: April 10, 2014Applicant: DOW GLOBAL TECHNOLOGIES, LLCInventors: Max M. Tirtowidjojo, William J. Kruper, JR., Barry B. Fish, David S. Laitar
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Publication number: 20140081055Abstract: Processes for the production of chlorinated propenes are provided. The present processes make use of 1,2-dichloropropane, a by-product in the production of chlorohydrin, as a low cost starting material, alone or in combination with 1,2,3-trichloropropane. The present processes can also generate anhydrous HCl as a byproduct that can be removed from the process and used as a feedstock for other processes, providing further time and cost savings. Finally, the processes are advantageously conducted in the liquid phase, thereby presenting additional savings as compared to conventional, gas phase processes.Type: ApplicationFiled: May 18, 2012Publication date: March 20, 2014Applicant: DOW GLOBAL TECHNOLOGIES, LLCInventors: Max M. Tirtowidjojo, William J. Kruper, JR., Barry B. Fish, David S. Laitar
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Patent number: 8581012Abstract: The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process.Type: GrantFiled: October 8, 2010Date of Patent: November 12, 2013Assignee: Dow Global Technologies, LLCInventors: Max M. Tirtowidjojo, Patrick H. Au-Yeung, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, Jr., Thomas U. Luebbe, Holger Meemann, Shirley S. Sexton, Peter Wenzel, Marcus Wobser
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Patent number: 8581011Abstract: The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures than 500° C. so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts or initiators may provide additional enhancements to conversion rates and selectivity, as may adjustments to the molar ratio of the reactants.Type: GrantFiled: October 8, 2010Date of Patent: November 12, 2013Assignee: Dow Global Technologies, LLCInventors: Max M. Tirtowidjojo, Debashis Chakraborty, Juergen Eiffler, Kurt F. Hirsekorn, William J. Kruper, Jr.
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Patent number: 8558041Abstract: The present invention provides isothermal multitube reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors utilize a feed mixture inlet temperature at least 20° C. different from a desired reaction temperature.Type: GrantFiled: October 8, 2010Date of Patent: October 15, 2013Assignee: Dow Global Technologies, LLCInventors: Max M. Tirtowidjojo, Hua Bai, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, Jr., Thomas U. Luebbe, Avani M. Patel, Shirley S. Sexton, Peter Wenzel, Marcus Wobser
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Publication number: 20130144073Abstract: At least one method to efficiently produce alkylene oxide from partial oxidation of hydrocarbons using a high efficiency heterogeneous catalyst in a fixed bed enclosed within a reaction vessel, and a reaction vessel constructed to facilitate the same.Type: ApplicationFiled: March 17, 2011Publication date: June 6, 2013Applicant: THE DOW CHEMICAL INVESTMENTS LLCInventors: Max M. Tirtowidjojo, Subrata Sen, Christina Zarth, Pramod D. Patil
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Patent number: 8258353Abstract: The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures relative to conventional processes, so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts may provide enhancements to conversion rates and selectivity over those seen in conventional processes, as may adjustments to the molar ratio of the reactants.Type: GrantFiled: April 20, 2010Date of Patent: September 4, 2012Assignee: Dow Global Technologies, LLCInventors: William J. Kruper, Jr., Max M. Tirtowidjojo, Kurt F. Hirsekorn, Debashis Chakraborty, Juergen Eiffler
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Patent number: 8129436Abstract: The present invention provides a method for simplifying manufacture of a mixed alcohol or mixed oxygenate product from synthesis gas. The mixed alcohol or mixed oxygenate product contains ethanol and other oxygenates with two or more carbon atoms per molecule. The method includes stripping a portion of carbon dioxide and inert gases contained in a mixed alcohol synthesis reaction product using a methanol-containing stream, such as one produced as part of the method, as a medium to absorb said carbon dioxide and inert gases and recycling light products and heavy products to one or more of synthesis gas generation, mixed alcohol synthesis and separation of desired mixed alcohol or mixed oxygenate products from other components of a mixed alcohol synthesis stream.Type: GrantFiled: March 21, 2007Date of Patent: March 6, 2012Assignee: Dow Global Technologies LLCInventors: Max M. Tirtowidjojo, Barry B. Fish, Hendrik L. Pelt, Dennis W. Jewell, Mark D. Bearden, John G. Pendergast, Jr., Jon H. Siddall, Brien A. Stears, Haivan D. Tran, Jan W. Verwijs, Aaltje Verwijs-van den Brink, legal representative, Lena Verwijs, legal representative, Hendrika Gerrita Verwijs, legal representative, Richard M. Wehmeyer
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Publication number: 20110178343Abstract: The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures relative to conventional processes, so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts may provide enhancements to conversion rates and selectivity over those seen in conventional processes, as may adjustments to the molar ratio of the reactants.Type: ApplicationFiled: April 20, 2010Publication date: July 21, 2011Applicant: DOW GLOBAL TECHNOLOGIES, INC.Inventors: William J. Kruper, JR., Max M. Tirtowidjojo, Kurt F. Hirsekorn, Debashis Chakraborty, Juergen Eiffler
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Publication number: 20110087055Abstract: The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the processType: ApplicationFiled: October 8, 2010Publication date: April 14, 2011Applicant: DOW GLOBAL TECHNOLOGIESInventors: Max M. Tirtowidjojo, Patrick H. Au-Yeung, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, JR., Thomas U. Luebbe, Holger Meeman, Shirley S. Sexton, Peter Wenzel, Marcus Wobser
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Publication number: 20110083955Abstract: The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures than 500° C. so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts or initiators may provide additional enhancements to conversion rates and selectivity, as may adjustments to the molar ratio of the reactants.Type: ApplicationFiled: October 8, 2010Publication date: April 14, 2011Applicant: DOW GLOBAL TECHNOLOGIES, INCInventors: Max M. Tirtowidjojo, Debashis Chakraborty, Juergen Eiffler, Kurt F. Hirsekorn, William J. Kruper, JR.
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Publication number: 20110087054Abstract: The present invention provides isothermal multitube reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors utilize a feed mixture inlet temperature at least 20° C. different from a desired reaction temperature.Type: ApplicationFiled: October 8, 2010Publication date: April 14, 2011Applicant: DOW GLOBAL TECHNOLOGIESInventors: Max M. Tirtowidjojo, Hua Bai, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, JR., Thomas U. Luebbe, Avani M. Patel, Shirley S. Sexton, Peter Wenzel, Marcus Wobser
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Publication number: 20110087056Abstract: The present invention provides adiabatic plug flow reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors comprise one or more designs that minimize the production of by-products at a desired conversion.Type: ApplicationFiled: October 8, 2010Publication date: April 14, 2011Applicant: DOW GLOBAL TECHNOLOGIESInventors: Max M. Tirtowidjojo, Hua Bai, Debashis Chakraborty, Juergen Eiffler, Heinz Groenewald, Kurt F. Hirsekorn, Manfred Kokott, William J. Kruper, JR., Thomas U. Luebbe, Thomas J. Parsons, Avani Maulik Patel, Marcus Wobser
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Publication number: 20100069515Abstract: The present invention provides a method for simplifying manufacture of a mixed alcohol or mixed oxygenate product from synthesis gas. The mixed alcohol or mixed oxygenate product contains ethanol and other oxygenates with two or more carbon atoms per molecule. The method includes stripping a portion of carbon dioxide and inert gases contained in a mixed alcohol synthesis reaction product using a methanol-containing stream, such as one produced as part of the method, as a medium to absorb said carbon dioxide and inert gases and recycling light products and heavy products to one or more of synthesis gas generation, mixed alcohol synthesis and separation of desired mixed alcohol or mixed oxygenate products from other components of a mixed alcohol synthesis stream.Type: ApplicationFiled: March 21, 2007Publication date: March 18, 2010Inventors: Max M. Tirtowidjojo, Barry B. Fish, Hendrik L. Pelt, Dennis W. Jewell, Mark D. Bearden, John G. Pendergast, JR., Jon H. Siddall, Brien A. Stears, Haivan D. Tran, Jan W. Verwijs, Richard M. Wehmeyer
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Patent number: 6004517Abstract: Allyl halide is produced in high yields and purity with minimal carbon formation using a process of: (1) initially reacting propylene and molecular halogen in a molar ratio of at least about 2.5:1 in a "continuously stirred tank reactor" (CSTR) zone under conditions suitable to provide a reaction temperature of about 400.degree. C. to 525.degree. C. to partially convert propylene and chlorine into allyl chloride; and (2) feeding an effluent from Step (1) into a plug-flow reactor zone where the reaction is continued at a temperature of about 400.degree. C. to 525.degree. C. until essentially all of the chlorine is consumed. A preferred reactor for the process contains: (1) a spherical, egg-shaped or oval reactor zone; (2) a tubular reactor zone attached to the spherical, egg-shaped or oval reactor zone; (3) one or more inlets for injecting gaseous reagents into the spherical, oval or egg-shaped reactor zone; and (4) one or more outlets from the tubular reactor zone for withdrawing a gaseous product.Type: GrantFiled: October 28, 1997Date of Patent: December 21, 1999Assignee: The Dow Chemical CompanyInventors: Max M. Tirtowidjojo, Paul C. Beckett, John F. Baker
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Patent number: 5504266Abstract: Allyl halide is produced in high yields and purity with minimal carbon formation using a process of: (1) initially reacting propylene and molecular halogen in a molar ratio of at least about 2.5:1 in a "continuously stirred tank reactor" (CSTR) zone under conditions suitable to provide a reaction temperature of about 400.degree. C. to 525.degree. C. to partially convert propylene and chlorine into allyl chloride; and (2) feeding an effluent from Step (1) into a plug-flow reactor zone where the reaction is continued at a temperature of about 400.degree. C. to 525.degree. C. until essentially all of the chlorine is consumed. A preferred reactor for the process contains: (1) a spherical, egg-shaped or oval reactor zone; (2) a tubular reactor zone attached to the spherical, egg-shaped or oval reactor zone; (3) one or more inlets for injecting gaseous reagents into the spherical, oval or egg-shaped reactor zone; and (4) one or more outlets from the tubular reactor zone for withdrawing a gaseous product.Type: GrantFiled: May 24, 1995Date of Patent: April 2, 1996Assignee: The Dow Chemical CompanyInventors: Max M. Tirtowidjojo, Paul C. Beckett, John F. Baker