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).

  • Patent number: 9403741
    Abstract: 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: Grant
    Filed: March 7, 2014
    Date of Patent: August 2, 2016
    Assignee: BLUE CUBE IP LLC
    Inventors: Max M. Tirtowidjojo, David S. Laitar, Matthew L. Grandbois, William J. Kruper, Jr., Edward M. Calverley
  • Publication number: 20160158715
    Abstract: 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: Application
    Filed: October 14, 2013
    Publication date: June 9, 2016
    Inventors: MAX M. TIRTOWIDJOJO, HUA BAI, EDWARD M. CALVERLEY
  • Patent number: 9321707
    Abstract: 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: Grant
    Filed: September 13, 2013
    Date of Patent: April 26, 2016
    Assignee: Blue Cube IP LLC
    Inventors: Max M. Tirtowidjojo, John D. Myers
  • Publication number: 20160023967
    Abstract: 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: Application
    Filed: March 7, 2014
    Publication date: January 28, 2016
    Applicant: BLUE CUBE IP LLC
    Inventors: Max M. TIRTOWIDJOJO, David S. LAITAR, Matthew L. GRANDBOIS, William J. KRUPER, Jr., Edward M. CALVERLEY
  • Patent number: 9233896
    Abstract: 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: Grant
    Filed: August 4, 2012
    Date of Patent: January 12, 2016
    Assignee: Blue Cube IP LLC
    Inventors: Max M. Tirtowidjojo, Barry B. Fish, David S. Laitar
  • Publication number: 20160002127
    Abstract: 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: Application
    Filed: February 28, 2014
    Publication date: January 7, 2016
    Applicant: Blue Cube IP LLC
    Inventors: Max M. TIRTOWIDJOJO, David S. LAITAR
  • Publication number: 20150344387
    Abstract: 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: Application
    Filed: December 17, 2013
    Publication date: December 3, 2015
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: MAX M. TIRTOWIDJOJO, DAVID S. LAITAR, BARRY B. FISH, WILLIAM J. KRUPER, Jr.
  • Publication number: 20150344386
    Abstract: 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: Application
    Filed: December 18, 2013
    Publication date: December 3, 2015
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: MAX M. TIRTOWIDJOJO, DAVID S. LAITAR, BARRY B. FISH, MATTHEW L. GRANDBOIS
  • Publication number: 20150336064
    Abstract: 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: Application
    Filed: June 1, 2015
    Publication date: November 26, 2015
    Inventors: Max M. Tirtowidjojo, Christina Zarth, Subrata Sen, Pramod D. Patil
  • Publication number: 20150266798
    Abstract: 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: Application
    Filed: September 13, 2013
    Publication date: September 24, 2015
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventor: Max M. Tirtowidjojo
  • Publication number: 20150239807
    Abstract: 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: Application
    Filed: September 13, 2013
    Publication date: August 27, 2015
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Max M. Tirtowidjojo, John D. Myers
  • Publication number: 20150217256
    Abstract: 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: Application
    Filed: September 29, 2013
    Publication date: August 6, 2015
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Max M. Tirtowidjojo, Hua Bai, Thomas U. Luebbe, Victor E. McMurray
  • Patent number: 9073034
    Abstract: 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: Grant
    Filed: March 17, 2011
    Date of Patent: July 7, 2015
    Assignee: DOW TECHNOLOGY INVESTMENTS LLC
    Inventors: Max M. Tirtowidjojo, Subrata Sen, Christina Zarth, Pramod D. Patil
  • Patent number: 9056808
    Abstract: 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: Grant
    Filed: May 18, 2012
    Date of Patent: June 16, 2015
    Assignee: Dow Global Technologies, LLC
    Inventors: Max M. Tirtowidjojo, William J. Kruper, Jr., Barry B. Fish, David S. Laitar
  • Publication number: 20150057471
    Abstract: The use of sulfuryl chloride, either alone or in combination with chlorine, as a chlorinating agent is disclosed.
    Type: Application
    Filed: May 18, 2012
    Publication date: February 26, 2015
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Max M Tirtowidjojo, Matthew Lee Grandbois, John D. Myers, William J. Kruper, JR.
  • Patent number: 8927792
    Abstract: 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: Grant
    Filed: May 30, 2012
    Date of Patent: January 6, 2015
    Assignee: Dow AgroSciences, LLC
    Inventors: Max M. Tirtowidjojo, William J. Kruper, Jr., Kurt F. Hirsekorn, Debashis Chakraborty
  • Patent number: 8907148
    Abstract: 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: Grant
    Filed: August 1, 2012
    Date of Patent: December 9, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Max M. Tirtowidjojo, Barry B. Fish, David S. Laitar
  • Patent number: 8907149
    Abstract: 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: Grant
    Filed: May 18, 2012
    Date of Patent: December 9, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Max M. Tirtowidjojo, William J. Kruper, Jr., Barry B. Fish, David S. Laitar
  • Publication number: 20140179962
    Abstract: 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: Application
    Filed: August 4, 2012
    Publication date: June 26, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Max M. Tirtowidjojo, Barry B. Fish, David S. Laitar
  • Publication number: 20140163266
    Abstract: 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: Application
    Filed: August 1, 2012
    Publication date: June 12, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Max M. Tirtowidjojo, Barry B. Fish, David S. Laitar