Patents by Inventor Selma Bektesevic
Selma Bektesevic 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: 20230174442Abstract: The present disclosure provides high purity E-1,3,3,3-tetrafluoropropene (HFO-1234ze). More specifically, the present disclosure provides E-1,3,3,3-tetrafluoropropene (HFO-234ze) in at least 99.99% purity, containing less than 3 ppm 1,1,3,3,3-pentafluoropropene (HFO-1225zc). The present disclosure further provides a method of making high purity E-1,3,3,3-tetrafluoropropene (HFO-1234ze).Type: ApplicationFiled: November 29, 2022Publication date: June 8, 2023Inventors: Haiyou Wang, Gustavo Cerri, Mitchel Cohn, Selma Bektesevic
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Publication number: 20220112226Abstract: The present disclosure provides a composition including trifluoroacetyl iodide, at least one organic impurity and at least one inorganic impurity. The at least one organic impurity includes at least one of: difluoroiodomethane, pentafluoroiodoethane, iodomethane, iodopropane, dichlorotetrafluoroethane, dichlorotrifluoroethane, trichlorotrifluoroethane, methyltrifluoroacetate, trifluoroacetic anhydride, difluorobutane and methyl propane. The at least one inorganic impurity includes at least one of: hydrogen iodide, hydrogen chloride, iodine and hydrogen triiodide.Type: ApplicationFiled: October 6, 2021Publication date: April 14, 2022Inventors: Haiyou Wang, Haridasan K. Nair, Daniel C. Merkel, Selma Bektesevic, Terris Yang
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Patent number: 10343962Abstract: The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting reagents, particularly, 1,1,2,3-tetrachloropropene (1230xa), oligomerization/polymerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that providing one or more organic co-feed to the fluooolefin starting stream reduces such oligomerization/polymerization and improves catalystic stability.Type: GrantFiled: March 21, 2017Date of Patent: July 9, 2019Assignee: Honeywell International Inc.Inventors: Selma Bektesevic, Daniel C. Merkel, Mario Joseph Nappa, Xuehui Sun, Hsueh Sung Tung, Haiyou Wang
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Publication number: 20190084906Abstract: The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting reagents, oligomerization/polymerization of such reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that vaporizing such starting reagents in the presence of one or more organic co-feed reduces such oligomerization/polymerization and improves catalytic stability.Type: ApplicationFiled: November 20, 2018Publication date: March 21, 2019Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Haiyou WANG, Hsueh Sung TUNG, Selma BEKTESEVIC, Daniel C. MERKEL, Haluk KOPKALLI, Yuon CHIU
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Patent number: 10131597Abstract: The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting reagents, oligomerization/polymerization of such reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that vaporizing such starting reagents in the presence of one or more organic co-feed reduces such oligomerization/polymerization and improves catalytic stability.Type: GrantFiled: November 2, 2012Date of Patent: November 20, 2018Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Haiyou Wang, Hsueh Sung Tung, Selma Bektesevic, Daniel C. Merkel, Haluk Kopkalli, Yuon Chiu
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Publication number: 20170313639Abstract: The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation.Type: ApplicationFiled: July 20, 2017Publication date: November 2, 2017Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Haiyou WANG, Selma BEKTESEVIC, Daniel C. MERKEL, Hsueh SUNG TUNG, Konstantin A. POKROVSKI
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Publication number: 20170283348Abstract: The invention relates to a process to prepare 2-chloro-3,3,3-trifluoropropene (HCO-1233xf) or 2-chloro-1,1,12-tetrafluoropropane (HCFC-244bb) using dichloro-trifluoropropanes and/or trichloro-difluoropropanes, and to prepare 2-chloro-3,3,3-trifluoropropene (HCO-1233xf) using various 242 and 243 isomers.Type: ApplicationFiled: June 15, 2017Publication date: October 5, 2017Applicant: Honeywell International, Inc.Inventors: Haiyou WANG, Hsueh SUNG TUNG, Selma BEKTESEVIC
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Patent number: 9758450Abstract: The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation.Type: GrantFiled: April 8, 2016Date of Patent: September 12, 2017Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Haiyou Wang, Selma Bektesevic, Daniel C. Merkel, Hsueh Sung Tung, Konstantin A. Pokrovski
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Publication number: 20170253545Abstract: The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefm starting reagents, particularly, 1,1,2,3-tetrachloropropene (1230xa), oligomerization/polymerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that providing one or more organic co-feed to the fluooolefin starting stream reduces such oligomerization/polymerization and improves catalystic stability.Type: ApplicationFiled: March 21, 2017Publication date: September 7, 2017Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Selma BEKTESEVIC, Daniel C. MERKEL, Mario Joseph NAPPA, Xuehui SUN, Hsueh Sung TUNG, Haiyou WANG
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Publication number: 20170253544Abstract: The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting reagents, particularly, 1,1,2,3-tetrachloropropene (1230xa), oligomerization/polyinerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that providing one or more organic co-feed to the fluooolefin starting stream reduces such oligomerization/polymerization and improves catalystic stability.Type: ApplicationFiled: March 21, 2017Publication date: September 7, 2017Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Selma BEKTESEVIC, Daniel C. MERKEL, Mario Joseph NAPPA, Xuehui SUN, Hsueh Sung TUNG, Haiyou WANG
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Patent number: 9701599Abstract: The invention relates to a process to prepare 2-chloro-3,3,3-trifluoropropene (HCO-1233xf) or 2-chloro-1,1,12-tetrafluoropropane (HCFC-244bb) using dichloro-trifluoropropanes and/or trichloro-difluoropropanes, and to prepare 2-chloro-3,3,3-trifluoropropene (HCO-1233xf) using various 242 and 243 isomers.Type: GrantFiled: June 23, 2016Date of Patent: July 11, 2017Assignee: HONEYWELL INTERNATIONAL. INC.Inventors: Haiyou Wang, Hsueh Sung Tung, Selma Bektesevic
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Patent number: 9670117Abstract: The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting reagents, particularly, 1,1,2,3-tetrachloropropene (1230xa), oligomerization/polymerization of such starting reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that providing one or more organic co-feed to the fluoroolefin starting stream reduces such oligomerization/polymerization and improves catalystic stability.Type: GrantFiled: November 2, 2012Date of Patent: June 6, 2017Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Selma Bektesevic, Daniel C. Merkel, Mario Joseph Nappa, Xuehui Sun, Hsueh Sung Tung, Haiyou Wang
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Patent number: 9540295Abstract: The present invention relates, in part, to the discovery that high temperatures during the fluorination of 1,1,2,3-tetrachloropropene (HCO-1230xa) to 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) results in catalyst instability, reduced selectivity of the conversion, and/or the formation of one or more undesirable by-products. By controlling the reaction temperature, it is shown that the catalyst life may be extended and the selectivity of the reaction improved. Such control similarly results in an overall improvement in the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (HFO-1234yf).Type: GrantFiled: September 29, 2012Date of Patent: January 10, 2017Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Selma Bektesevic, Hsueh Sung Tung, Haiyou Wang
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Publication number: 20160304420Abstract: The invention relates to a process to prepare 2-chloro-3,3,3-trifluoropropene (HCO-1233xf) or 2-chloro-1,1,12-tetrafluoropropane (HCFC-244bb) using dichloro-trifluoropropanes and/or trichloro-difluoropropanes, and to prepare 2-chloro-3,3,3-trifluoropropene (HCO-1233xf) using various 242 and 243 isomers.Type: ApplicationFiled: June 23, 2016Publication date: October 20, 2016Applicant: Honeywell International, Inc.Inventors: Haiyou WANG, Hsueh SUNG TUNG, Selma BEKTESEVIC
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Publication number: 20160221898Abstract: The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation.Type: ApplicationFiled: April 8, 2016Publication date: August 4, 2016Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Haiyou WANG, Selma BEKTESEVIC, Daniel C. MERKEL, Hsueh SUNG TUNG, Konstantin A. POKROVSKI
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Patent number: 9359273Abstract: The present invention relates, in part, to the discovery that the presence of impurities in 1,1,2,3-tetrachloropropene (1230xa) results in catalyst instability during the fluorination of 1230xa to 2-chloro-3,3,3-trifluoropropene. By substantially removing the impurities, it is shown that the catalyst life is extended and results in improved operation efficiency of the fluorination reaction. Such steps similarly result in an overall improvement in the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (1234yf).Type: GrantFiled: October 11, 2012Date of Patent: June 7, 2016Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Selma Bektesevic, Daniel C. Merkel, Mario Joseph Nappa, Xuehui Sun, Hsueh Sung Tung, Haiyou Wang
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Patent number: 9334206Abstract: The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation.Type: GrantFiled: March 11, 2014Date of Patent: May 10, 2016Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Haiyou Wang, Selma Bektesevic, Daniel C. Merkel, Hsueh Sung Tung, Konstantin A. Pokrovski
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Patent number: 9328043Abstract: The present invention relates, in part, an improved process for the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (1234yf). In certain non-limiting embodiments, the invention relates to methods for improving process efficiency during the fluorination of 1,1,2,3-tetrachloropropene, 2,3,3,3-tetrachloropropene, and/or 1,1,1,2,3-pentachloropropane to 2-chloro-3,3,3-trifluoropropene by separating and recycling unreacted HF, unreacted starting materials, and/or certain process intermediates from the 2-chloro-3,3,3-trifluoropropene product stream.Type: GrantFiled: February 25, 2013Date of Patent: May 3, 2016Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Haiyou Wang, Selma Bektesevic, Hsueh S. Tung, Haluk Kopkalli, Yuon Chiu
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Patent number: 9309175Abstract: The invention relates to the use of a liquid-vapor separator such as a de-entrainer to remove an unvaporized portion of a feed, e.g. 1,1,2,3-tetrachloropropene (1230xa), to a catalytic vapor phase fluorination reaction where e.g. 2-chloro-3,3,3,-trifluoropropene (1233xf) is produced. The invention extends the life of the catalyst.Type: GrantFiled: April 18, 2014Date of Patent: April 12, 2016Assignee: Honeywell International Inc.Inventors: Selma Bektesevic, Haluk Kopkalli, Haiyou Wang
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Patent number: 9211483Abstract: Disclosed is a method for the production of 1233xf comprising the continuous low temperature liquid phase reaction of 1,1,1,2,3-pentachloropropane and anhydrous HF, without the use of a catalyst, wherein the reaction takes place in one or more reaction vessels, each one in succession converting a portion of the original reactants fed to the lead reaction vessel and wherein the reactions are run in a continuous fashion.Type: GrantFiled: January 30, 2014Date of Patent: December 15, 2015Assignee: Honeywell International Inc.Inventors: Daniel C. Merkel, Hsueh Sung Tung, Konstantin A. Pokrovski, Haiyou Wang, Selma Bektesevic