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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Patent number: 9403741Abstract: Processes for the production of chlorinated alkanes are provided. The present processes comprise dehydrochlorinating one or more trichloroalkanes having from 3-6 carbon atoms and vicinal chlorine atoms, followed by a series of sequential chlorination and/or further dehydrochlorination steps. Because the trichloroalkane is first dehydrochlorinated, rather than being first chlorinated, greater specificity to desired tetra- and pentachloroalkanes can be seen.Type: GrantFiled: March 7, 2014Date of Patent: August 2, 2016Assignee: BLUE CUBE IP LLCInventors: Max M. Tirtowidjojo, David S. Laitar, Matthew L. Grandbois, William J. Kruper, Jr., Edward M. Calverley
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Publication number: 20160158715Abstract: The present invention relates to a mixer, an apparatus comprising the mixer and a reactor, and processes incorporating the same. The mixer comprises an inlet (104) to a chamber (102), wherein the chamber inlet angle is less than 90°. The mixer further comprises an expander zone (106) that expands outwardly at an expander angle of less than 90°. The mixer may be coupled to a reactor at its outlet, which may closely approximate the size of the reactor inlet due to the expander (106).Type: ApplicationFiled: October 14, 2013Publication date: June 9, 2016Inventors: MAX M. TIRTOWIDJOJO, HUA BAI, EDWARD M. CALVERLEY
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Patent number: 9321707Abstract: 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. At least one chlorination step is conducted in the gas phase. The present processes can also generate anhydrous HCI 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: GrantFiled: September 13, 2013Date of Patent: April 26, 2016Assignee: Blue Cube IP LLCInventors: Max M. Tirtowidjojo, John D. Myers
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Publication number: 20160023967Abstract: Processes for the production of chlorinated alkanes are provided. The present processes comprise dehydrochlorinating one or more trichloroalkanes having from 3-6 carbon atoms and vicinal chlorine atoms, followed by a series of sequential chlorination and/or further dehydrochlorination steps. Because the trichloroalkane is first dehydrochlorinated, rather than being first chlorinated, greater specificity to desired tetra- and pentachloroalkanes can be seen.Type: ApplicationFiled: March 7, 2014Publication date: January 28, 2016Applicant: BLUE CUBE IP LLCInventors: Max M. TIRTOWIDJOJO, David S. LAITAR, Matthew L. GRANDBOIS, William J. KRUPER, Jr., Edward M. CALVERLEY
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Patent number: 9233896Abstract: Processes for the production of chlorinated propenes are provided wherein a dehydrochlorination reaction occurs prior to a first chlorination reaction. The present processes make use of at least one reactor twice, i.e., at least two reactions occur in the same reactor. Cost and time savings are thus provided. Additional savings can be achieved by conducting more than two chlorination reactions, or all chlorination reactions, in one chlorination reactor, and/or by conducting more than two dehydrochlorination reactions, or all dehydrochlorination reactions, within a single dehydrochlorination reactor.Type: GrantFiled: August 4, 2012Date of Patent: January 12, 2016Assignee: Blue Cube IP LLCInventors: Max M. Tirtowidjojo, Barry B. Fish, David S. Laitar
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Publication number: 20160002127Abstract: Processes for the production of chlorinated propanes are provided. The processes comprise catalyzing the chlorination of 1,1,1,3-tetrachloropropane with aluminum chloride, either alone or in combination with ferric chloride. Low intensity conditions are appropriate for the process, e.g., temperatures of from ambient to 100° C. and pressures of from ambient to 200 psig may be used. Even though low intensity conditions are used, the aluminum chloride provides at least 1.5 times greater the conversion rate and/or productivity of 1,1,1,3-tetrachloropropane as compared to ferric chloride when used as a single catalyst under similar processing conditions.Type: ApplicationFiled: February 28, 2014Publication date: January 7, 2016Applicant: Blue Cube IP LLCInventors: Max M. TIRTOWIDJOJO, David S. LAITAR
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Publication number: 20150344387Abstract: 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. 1,1,1,2,2-pentachloropropane produced by the process is subjected to catalytic dehydrochlorination and build-up of the same within the process is avoided.Type: ApplicationFiled: December 17, 2013Publication date: December 3, 2015Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: MAX M. TIRTOWIDJOJO, DAVID S. LAITAR, BARRY B. FISH, WILLIAM J. KRUPER, Jr.
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Publication number: 20150344386Abstract: Processes for the production of chlorinated propenes are provided. The processes make use of 1,2-dichloropropane as a starting material and subject a feedstream comprising the same to an ionic chlorination process. At least a portion of any tri- and tetrachlorinated propanes not amenable to ionic chlorination conditions are removed from the ionic chlorination product stream, or, are subjected to chemical base dehydrochlorination step. In this way, recycle of intermediates not amenable to ionic chlorination reactions is reduced or avoided, as is the buildup of these intermediates within the process. Selectivity and, in some embodiments, yield of the process is thus enhanced.Type: ApplicationFiled: December 18, 2013Publication date: December 3, 2015Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: MAX M. TIRTOWIDJOJO, DAVID S. LAITAR, BARRY B. FISH, MATTHEW L. GRANDBOIS
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Publication number: 20150336064Abstract: 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: June 1, 2015Publication date: November 26, 2015Inventors: Max M. Tirtowidjojo, Christina Zarth, Subrata Sen, Pramod D. Patil
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Publication number: 20150266798Abstract: 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. At least one dehydrochlorination is conducted in the gas phase, and is the first process step. 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.Type: ApplicationFiled: September 13, 2013Publication date: September 24, 2015Applicant: DOW GLOBAL TECHNOLOGIES LLCInventor: Max M. Tirtowidjojo
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Publication number: 20150239807Abstract: 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. At least one chlorination step is conducted in the gas phase. The present processes can also generate anhydrous HCI 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: September 13, 2013Publication date: August 27, 2015Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Max M. Tirtowidjojo, John D. Myers
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Publication number: 20150217256Abstract: The present invention provides a weir quench, an apparatus comprising a reactor and the weir quench and processes incorporating the same. The weir quench incorporates an inlet having an inner diameter (Di) and an upper chamber having an inner diameter (Duc), wherein the inlet inner diameter (Di) is at least 90% of the upper chamber inner diameter (Duc). The apparatus comprises a reactor having an outlet with an inner diameter fluidly coupled with the weir quench inlet, wherein the ratio of the reactor outlet inner diameter (Dr) to the weir quench inlet diameter (Di) is greater than one. The weir quench, and apparatus comprising a reactor and the weir no quench, are advantageously utilized in processes utilizing a limiting reagent.Type: ApplicationFiled: September 29, 2013Publication date: August 6, 2015Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Max M. Tirtowidjojo, Hua Bai, Thomas U. Luebbe, Victor E. McMurray
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Patent number: 9073034Abstract: 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: GrantFiled: March 17, 2011Date of Patent: July 7, 2015Assignee: DOW TECHNOLOGY INVESTMENTS LLCInventors: Max M. Tirtowidjojo, Subrata Sen, Christina Zarth, Pramod D. Patil
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Patent number: 9056808Abstract: 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: GrantFiled: May 18, 2012Date of Patent: June 16, 2015Assignee: Dow Global Technologies, LLCInventors: Max M. Tirtowidjojo, William J. Kruper, Jr., Barry B. Fish, David S. Laitar
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Publication number: 20150057471Abstract: The use of sulfuryl chloride, either alone or in combination with chlorine, as a chlorinating agent is disclosed.Type: ApplicationFiled: May 18, 2012Publication date: February 26, 2015Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Max M Tirtowidjojo, Matthew Lee Grandbois, John D. Myers, William J. Kruper, JR.
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Patent number: 8927792Abstract: Processes for the production of chlorinated and/or fluonnated propenes provide good product yield with advantageous impurity profiles in the crude product. Advantageously, the processes may be conducted at lower temperatures than 600° C., or less 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: May 30, 2012Date of Patent: January 6, 2015Assignee: Dow AgroSciences, LLCInventors: Max M. Tirtowidjojo, William J. Kruper, Jr., Kurt F. Hirsekorn, Debashis Chakraborty
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Patent number: 8907148Abstract: 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: GrantFiled: August 1, 2012Date of Patent: December 9, 2014Assignee: Dow Global Technologies LLCInventors: Max M. Tirtowidjojo, Barry B. Fish, David S. Laitar
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Patent number: 8907149Abstract: 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: GrantFiled: May 18, 2012Date of Patent: December 9, 2014Assignee: Dow Global Technologies LLCInventors: Max M. Tirtowidjojo, William J. Kruper, Jr., Barry B. Fish, David S. Laitar
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Publication number: 20140179962Abstract: Processes for the production of chlorinated propenes are provided wherein a dehydrochlorination reaction occurs prior to a first chlorination reaction. The present processes make use of at least one reactor twice, i.e., at least two reactions occur in the same reactor. Cost and time savings are thus provided. Additional savings can be achieved by conducting more than two chlorination reactions, or all chlorination reactions, in one chlorination reactor, and/or by conducting more than two dehydrochlorination reactions, or all dehydrochlorination reactions, within a single dehydrochlorination reactor.Type: ApplicationFiled: August 4, 2012Publication date: June 26, 2014Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Max M. Tirtowidjojo, Barry B. Fish, David S. Laitar
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Publication number: 20140163266Abstract: 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