Patents by Inventor Clive Robert Giddis
Clive Robert Giddis 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: 11767277Abstract: The present invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising: (a) fluorinating CCl3CH2CH2Cl (250fb) to produce a reaction product comprising CF3CH2CH2Cl (253fb) in the liquid phase in a first reactor, using HF as the fluorinating agent; and (b) (i) dehydrohalogenating 253fb to produce 1243zf in the vapour phase in the present of a catalyst in a second reactor; or (b)(ii) dehydrohalogenating 253fb to produce 1243zf in a second reactor, wherein the reaction product comprising 253fb produced in step (a) has subjected to one or more purification steps before step (b). The present invention also provides an azeotropic or near-azeotropic composition comprising HF and 253fb.Type: GrantFiled: April 30, 2021Date of Patent: September 26, 2023Assignee: Mexichem Fluor S.A. de C.V.Inventors: Emma Jayne Hodgson, Clare Mary Skae, Gary Lloyd, Claire Elizabeth McGuinness, Clive Robert Giddis, James Henry Murray
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Patent number: 11572327Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI?CH2, 1233xf), hydrogen chloride (HCl) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCl and air; wherein the process is carried out with a co-feed of air.Type: GrantFiled: October 8, 2021Date of Patent: February 7, 2023Assignee: Mexichem Fluor S.A. de C.V.Inventors: Sheryl Louise Johnson, Stephen Andrew Flaherty, Clive Robert Giddis
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Publication number: 20220098131Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI?CH2, 1233xf), hydrogen chloride (HCl) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCl and air; wherein the process is carried out with a co-feed of air.Type: ApplicationFiled: October 8, 2021Publication date: March 31, 2022Applicant: Mexichem Fluor S.A. de C.V.Inventors: Sheryl Louise Johnson, Stephen Andrew Flaherty, Clive Robert Giddis
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Publication number: 20220033330Abstract: The present invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising: (a) fluorinating CCl3CH2CH2Cl (250fb) to produce a reaction product comprising CF3CH2CH2Cl (253fb) in the liquid phase in a first reactor, using HF as the fluorinating agent; and (b) (i) dehydrohalogenating 253fb to produce 1243zf in the vapour phase in the present of a catalyst in a second reactor; or (b)(ii) dehydrohalogenating 253fb to produce 1243zf in a second reactor, wherein the reaction product comprising 253fb produced in step (a) has subjected to one or more purification steps before step (b). The present invention also provides an azeotropic or near-azeotropic composition comprising HF and 253fb.Type: ApplicationFiled: April 30, 2021Publication date: February 3, 2022Applicant: Mexichem Fluor S.A. de C.V.Inventors: Emma Jayne HODGSON, Clare Mary Skae, Gary Lloyd, Claire Elizabeth McGuinness, Clive Robert Giddis, James Henry Murray
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Patent number: 11155506Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCl?CH2, 1233xf), hydrogen chloride (HCl) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCl and air; wherein the process is carried out with a co-feed of air.Type: GrantFiled: April 22, 2020Date of Patent: October 26, 2021Assignee: Mexichem Fluor S.A. de C.V.Inventors: Sheryl Louise Johnson, Stephen Andrew Flaherty, Clive Robert Giddis
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Patent number: 10899686Abstract: The present invention provides an integrated process for preparing 2,3,3, 3-tetrafluoropropene (1234yf), the process comprising: (a) vapour phase catalytic fluorination of a first composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3C—CNCH2, 1233xf) with hydrogen fluoride (HF) in a fluorination reactor to produce a fluorination product stream comprising 1,1,2,2-pentafluoropropane (245cb), HF and HCI; (b) vapour phase catalytic dehydrofluorination composition comprising 245cb in a dehydrofluorination reactor to produce a dehydrofluorination product stream comprising 1234yf and HF; wherein the fluorination product stream and the dehydrofluorination product stream are combined and subjected to (c) purification to produce a composition comprising 245cb and a 1234yf product stream.Type: GrantFiled: July 14, 2016Date of Patent: January 26, 2021Assignee: MEXICHEM FLUOR S.A. DE C.V.Inventors: Sheryl Louise Johnson, Stephen Andrew Flaherty, James Henry Murray, Fiona Louise Smith, Jonathan Junhay Man, Clive Robert Giddis
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Publication number: 20200247734Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI?CH2, 1233xf), hydrogen chloride (HCl) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245c, HF, HCl and air; wherein the process is carried out with a co-feed of air.Type: ApplicationFiled: April 22, 2020Publication date: August 6, 2020Applicant: MEXICHEM FLUOR S.A. DE C.V.Inventors: SHERYL LOUISE JOHNSON, STEPHEN ANDREW FLAHERTY, CLIVE ROBERT GIDDIS
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Patent number: 10689316Abstract: The present invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising: (a)fluorinating CCl3CH2CH2CI (250fb) to produce a reaction product comprising CF3CH2CH2CI (253fb) in the liquid phase in a first reactor, using HF as the fluorinating agent; and (b)(i) dehydrohalogenating 253fb to produce 1243zf in the vapour phase in the presence of a catalyst in a second reactor; or (b)(ii) dehydrohalogenating 253fb to produce 1243zf in a second reactor, wherein the reaction product comprising 253fb produced in step (a) has subjected to one or more purification steps before step (b). The present invention also provides an azeotropic or near-azeotropic composition comprising HF and 253fb.Type: GrantFiled: July 14, 2016Date of Patent: June 23, 2020Assignee: MEXICAN FLUOR S.A. DE C.V.Inventors: Emma Jayne Hodgson, Claire Elizabeth McGuinness, Clive Robert Giddis, James Henry Murray, Clare Mary Skae, Gary Lloyd
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Patent number: 10669219Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI?CH2, 1233xf), hydrogen chloride (HCI) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCI and air; wherein the process is carried out with a co-feed of air.Type: GrantFiled: July 14, 2016Date of Patent: June 2, 2020Assignee: MEXICHEM FLUOR S.A. DE C.V.Inventors: Sheryl Louise Johnson, Stephen Andrew Flaherty, Clive Robert Giddis
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Publication number: 20190330130Abstract: The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCI=CH2, 1233xf), hydrogen chloride (HCI) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCI and air; wherein the process is carried out with a co-feed of air.Type: ApplicationFiled: July 14, 2016Publication date: October 31, 2019Applicants: MEXICHEM FLUOR S.A. DE C.V., MEXICHEM UK LIMITEDInventors: SHERYL LOUISSE JOHNSON, STEPHEN ANDREW FLAHERTY, CLIVE ROBERT GIDDIS
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Publication number: 20190169098Abstract: The present invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising: (a)fluorinating CCI3CH2CH2CI (250fb) to produce a reaction product comprising CF3CH2CH2CI (253fb) in the liquid phase in a first reactor, using HF as the fluorinating agent; and (b)(i) dehydrohalogenating 253fb to produce 1243zf in the vapour phase in the present of a catalyst in a second reactor; or (b)(ii) dehydrohalogenating 253fb to produce 1243zf in a second reactor, wherein the reaction product comprising 253fb produced in step (a) has subjected to one or more purification steps before step (b). The present invention also provides an azeotropic or near-azeotropic composition comprising HF and 253fb.Type: ApplicationFiled: July 14, 2016Publication date: June 6, 2019Applicant: MEXICHEM FLUOR S.A. DE C.V.Inventors: EMMA J HODGSON, CLAIRE ELIZABETH McGUINNESS, CLIVE ROBERT GIDDIS, JAMES HENRY MURRAY, CLARE MARY SKAE, GARY LLOYD
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Publication number: 20180208528Abstract: The present invention provides a method of producing 2,3,3,3-tetrafluoropropene (HFO-1234yf), wherein the method comprises two or more reaction steps, at least one of said reaction steps comprising the production of 1,3,3,3-tetrafluoropropene (HFO-1234ze) and/or one or more HFO-1234ze precursors from one or more HFO-1234yf precursors, wherein at least a portion of the HFO-1234ze is recovered.Type: ApplicationFiled: July 14, 2016Publication date: July 26, 2018Applicants: MEXICHEM FLUOR S.A. DE C.V., MEXICHEM UK LIMITEDInventors: CLIVE ROBERT GIDDIS, FIONA LOUISE SMITH, JONATHAN JUNHAY MAN, CARA JOY CRONSHAW
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Patent number: 8236997Abstract: A process for the production of pentafluoroethane is described. The process comprises reacting perchloroethylene with hydrogen fluoride in the vapor phase in a first reactor or a first plurality of reactors in the presence of a fluorination catalyst to produce a composition comprising dichlorotrifluoroethane, hydrogen chloride, unreacted hydrogen fluoride and perchloroethylene. This composition is subjected to a separation step to yield a purified composition comprising at least 95 weight % of dichlorotrifluorethane and less than 0.5 weight % of compounds having the formula C2C16-XFX, where x is an integer of from 0 to 6, base the total weight of organic compounds in the composition. The composition from the separation step is then reacted with hydrogen fluoride in the vapor phase in a second reactor or a second plurality of reactors in the presence of a fluorination catalyst to produce a composition comprising pentafluoroethane and less than 0.Type: GrantFiled: December 18, 2006Date of Patent: August 7, 2012Assignee: Mexichem Amanco Holding S.A. de C.V.Inventors: Clive Robert Giddis, Paul Hendry Stewert
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Publication number: 20120016165Abstract: A process for the production of dichlorotrifluoroethane is described. The process comprises reacting perchloroethylene with hydrogen fluoride in the vapour phase at elevated temperature in at least one reactor in the presence of a fluorination catalyst to produce a composition comprising dichlorotrifluoroethane, hydrogen chloride, unreacted perchloroethylene and unreacted hydrogen fluoride. The composition that is produced is subjected to a separation step to recover a first fraction comprising dichlorotrifluoroethane and a second fraction comprising perchloroethylene and hydrogen fluoride. The second fraction is further separated into a hydrogen fluoride-rich fraction and a perchloroethylene-containing, organic-rich fraction which are then recycled. The dichlorotrifluoroethane that is recovered may be used to prepare pentafluoroethane.Type: ApplicationFiled: September 23, 2011Publication date: January 19, 2012Applicant: Mexichem Amanco S.A. de C.V.Inventors: CLIVE ROBERT GIDDIS, PAUL HENDRY STEWERT
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Publication number: 20120016166Abstract: A process for the production of dichlorotrifluoroethane is described. The process comprises reacting perchloroethylene with hydrogen fluoride (HF) at elevated temperature in the vapour phase in at least one reactor in the presence of a fluorination catalyst. The process is operated so that 30 weight % or more of the perchloroethylene reactant that is fed to the at least one reactor remains unreacted having passed through the or each reactor. The dichlorotrifluoroethane may be purified and then used as it is or used to prepare pentafluoroethane.Type: ApplicationFiled: September 23, 2011Publication date: January 19, 2012Applicant: Mexichem Amanco S.A. de C.V.Inventors: Clive Robert GIDDIS, Paul Hendry Stewert
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Patent number: 8058485Abstract: A process for the production of dichlorotrifluoroethane is described. The process comprises reacting perchloroethylene with hydrogen fluoride in the vapor phase at elevated temperature in at least one reactor in the presence of a fluorination catalyst to produce a composition comprising dichlorotrifluoroethane, hydrogen chloride, unreacted perchloroethylene and unreacted hydrogen fluoride. The composition that is produced is subjected to a separation step to recover a first fraction comprising dichlorotrifluoroethane and a second fraction comprising perchloroethylene and hydrogen fluoride. The second fraction is further separated into a hydrogen fluoride-rich fraction and a perchloroethylene-containing, organic-rich fraction which are then recycled. The dichlorotrifluoroethane that is recovered may be used to prepare pentafluoroethane.Type: GrantFiled: December 18, 2006Date of Patent: November 15, 2011Assignee: Mexichem Amanco S.A. de C.V.Inventors: Clive Robert Giddis, Paul Hendry Stewert
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Patent number: 8049045Abstract: A process for the production of dichlorotrifluoroethane is described. The process comprises reacting perchloroethylene with hydrogen fluoride (HP) at elevated temperature in the vapor phase in at least one reactor in the presence of a fluorination catalyst. The process is operated so that 30 weight % or more of the perchloroethylene reactant that is fed to the at least one reactor remains unreacted having passed through the or each reactor. The dichlorotrifluoroethane may be purified and then used as it is or used to prepare pentafluoroethane.Type: GrantFiled: December 18, 2006Date of Patent: November 1, 2011Assignee: Mexichem Amanco S.A. de C.V.Inventors: Clive Robert Giddis, Paul Hendry Stewert
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Publication number: 20100163780Abstract: A process for the production of dichlorotrifluoroethane is described. The process comprises reacting perchloroethylene with hydrogen fluoride (HP) at elevated temperature in the vapour phase in at least one reactor in the presence of a fluorination catalyst. The process is operated so that 30 weight % or more of the perchloroethylene reactant that is fed to the at least one reactor remains unreacted having passed through the or each reactor. The dichlorotrifluoroethane may be purified and then used as it is or used to prepare pentafluoroethane.Type: ApplicationFiled: December 18, 2006Publication date: July 1, 2010Inventors: Clive Robert Giddis, Paul Hendry Stewert
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Publication number: 20100168483Abstract: A process for the production of pentafluoroethane is described. The process comprises reacting perchloroethylene with hydrogen fluoride in the vapour phase in a first reactor or a first plurality of reactors in the presence of a fluorination catalyst to produce a composition comprising dichlorotrifluoroethane, hydrogen chloride, unreacted hydrogen fluoride and perchloroethylene. This composition is subjected to a separation step to yield a purified composition comprising at least 95 weight % of dichlorotrifluorethane and less than 0.5 weight % of compounds having the formula C2C16-XFX, where x is an integer of from 0 to 6, base the total weight of organic compounds in the composition. The composition from the separation step is then reacted with hydrogen fluoride in the vapour phase in a second reactor or a second plurality of reactors in the presence of a fluorination catalyst to produce a composition comprising pentafluoroethane and less than 0.Type: ApplicationFiled: December 18, 2006Publication date: July 1, 2010Inventors: Clive Robert Giddis, Paul Hendry Stewert
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Publication number: 20090270662Abstract: A process for the production of dichlorotrifluoroethane is described. The process comprises reacting perchloroethylene with hydrogen fluoride in the vapour phase at elevated temperature in at least one reactor in the presence of a fluorination catalyst to produce a composition comprising dichlorotrifluoroethane, hydrogen chloride, unreacted perchloroethylene and unreacted hydrogen fluoride. The composition that is produced is subjected to a separation step to recover a first fraction comprising dichlorotrifluoroethane and a second fraction comprising perchloroethylene and hydrogen fluoride. The second fraction is further separated into a hydrogen fluoride-rich fraction and a perchloroemylene-containing, organic-rich fraction which are then recycled. The dichlorotrifluoroethane that is recovered may be used to prepare pentafluoroethane.Type: ApplicationFiled: December 18, 2006Publication date: October 29, 2009Applicant: INEOS FLUOR HOLDINGS LIMITEDInventors: Clive Robert Giddis, Paul Hendry Stewert