Patents by Inventor Andrew P. Sharratt

Andrew P. Sharratt 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: 10571172
    Abstract: The invention provides a composition comprising 1,1-difluoroethene (R-1132a); a second component selected from the group consisting of hexafluoroethane (R-116), ethane (R-170) and mixtures thereof; and, optionally carbon dioxide (CO2, R-744).
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: February 25, 2020
    Assignee: MEXICHEM FLUOR S.A. DE C.V.
    Inventors: Robert E. Low, Andrew P. Sharratt
  • Publication number: 20190368794
    Abstract: The invention provides a composition comprising 1,1-difluoroethene (R-1132a); a second component selected from the group consisting of hexafluoroethane (R-116), ethane (R-170) and mixtures thereof; and, optionally carbon dioxide (CO2, R-744).
    Type: Application
    Filed: July 25, 2019
    Publication date: December 5, 2019
    Inventors: Robert E. Low, Andrew P. Sharratt
  • Publication number: 20190353411
    Abstract: The invention provides a composition comprising 1,1-difluoroethene (R-1132a); a second component selected from the group consisting of hexafluoroethane (R-116), ethane (R-170) and mixtures thereof; and, optionally carbon dioxide (CO2, R-744).
    Type: Application
    Filed: July 25, 2019
    Publication date: November 21, 2019
    Inventors: Robert E. Low, Andrew P. Sharratt
  • Patent number: 10371425
    Abstract: The invention provides a composition comprising 1,1-difluoroethene (R-1132a); a second component selected from the group consisting of hexafluoroethane (R-116), ethane (R-170) and mixtures thereof; and, optionally carbon dioxide (CO2, R-744).
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: August 6, 2019
    Assignee: Mexichem Fluor S.A. de C.V.
    Inventors: Robert E. Low, Andrew P. Sharratt
  • Patent number: 10189757
    Abstract: A chromia-based fluorination catalyst comprising at least one additional metal selected from zinc, nickel, aluminum and magnesium in which from 0.1 to 8.0% by weight of the catalyst is in the form of one or more crystalline compounds of chromium and/or one or more crystalline compounds of the at least one additional metal. The catalyst can be used in processes for producing a fluorinated hydrocarbon.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: January 29, 2019
    Assignee: Mexichem Amanco Holding S.A. de C.V.
    Inventors: Andrew P Sharratt, John D Scott
  • Patent number: 10179754
    Abstract: The present invention relates to a process for isomerizing a C3-7 (hydro)(halo)fluoroalkene comprising (a) providing a reactor feed stream comprising the C3-7 (hydro)(halo)fluoroalkene; and (b) contacting the C3-7 (hydro)(halo)fluoroalkene with a catalyst comprising alumina to isomerize the C3-7 (hydro)(halo)fluoroalkene, wherein the catalyst has a sodium content of less than about 800 ppm.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: January 15, 2019
    Assignee: MEXICHEM AMANCO HOLDING S.A. de C.V.
    Inventors: Claire E McGuinness, Andrew P Sharratt
  • Patent number: 10167242
    Abstract: The invention provides a process for preparing a C3-7 (hydro)fluoroalkene comprising dehydrohalogenating a C3-7 hydro(halo)fluoroalkane in the presence of a catalyst comprising a metal oxide supported on alumina, wherein the catalyst has a sodium content of less than about 800 ppm.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: January 1, 2019
    Assignee: Mexichem Amanco Holding S.A. de C.V.
    Inventors: Andrew P Sharratt, Claire E McGuinness, Sheryl C Carolan
  • Publication number: 20180318797
    Abstract: A new chromium-containing fluorination catalyst is described. The catalyst comprises an amount of zinc that promotes activity. The zinc is contained in aggregates which have a size across their largest dimension of up to 1 micron. The aggregates are distributed throughout at least the surface region of the catalyst and greater than 40 weight % of the aggregates contain a concentration of zinc that is within ±1 weight % of the modal concentration of zinc in those aggregates.
    Type: Application
    Filed: July 11, 2018
    Publication date: November 8, 2018
    Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventor: Andrew P. Sharratt
  • Publication number: 20180265437
    Abstract: The invention provides a process for the preparation of 1234yf comprising (a) contacting 1,1,2,3,3,3-hexafluoropropene (1216) with hydrogen in the presence of a hydrogenation catalyst to produce 1,1,2,3,3,3-hexafluoropropane (236ea); (b) dehydrofluorinating 236ea to produce 1,2,3,3,3-pentafluoropropene (1225ye); (c) contacting 1225ye with hydrogen in the presence of a hydrogenation catalyst to produce 1,2,3,3,3-pentafluoropropane (245eb); and (d) dehydrofluorinating 245eb to produce 1234yf.
    Type: Application
    Filed: April 24, 2018
    Publication date: September 20, 2018
    Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventors: John W. Smith, Claire McGuinness, Andrew P. Sharratt, Andrew M. Taylor
  • Patent number: 9957210
    Abstract: The invention provides a process for the preparation of 1234yf comprising (a) contacting 1,1,2,3,3,3-hexafluoropropene (1216) with hydrogen in the presence of a hydrogenation catalyst to produce 1,1,2,3,3,3-hexafluoropropane (236ea); (b) dehydrofluorinating 236ea to produce 1,2,3,3,3-pentafluoropropene (1225ye); (c) contacting 1225ye with hydrogen in the presence of a hydrogenation catalyst to produce 1,2,3,3,3-pentafluoropropane (245eb); and (d) dehydrofluorinating 245eb to produce 1234yf.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: May 1, 2018
    Assignee: MEXICHEM AMANCO HOLDINGS S.A. DE C.V.
    Inventors: John W. Smith, Claire McGuinness, Andrew P. Sharratt, Andrew M. Taylor
  • Publication number: 20180072641
    Abstract: A new chromium-containing fluorination catalyst is described. The catalyst comprises an amount of zinc that promotes activity and from 0.1 to 8.0% by weight of the chromium in the catalyst based on the total weight of the chromium is present as chromium (VI). The use of the zinc-promoted, chromium-containing catalyst in a fluorination process in which a hydrocarbon or halogenated hydrocarbon is reacted with hydrogen fluoride in the vapour-phase at elevated temperatures is also described.
    Type: Application
    Filed: November 17, 2017
    Publication date: March 15, 2018
    Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventor: ANDREW P SHARRATT
  • Publication number: 20180044269
    Abstract: A process for treating a composition comprising one or more desired (hydro)halocarbons and one or more undesired halogenated hydrocarbon containing impurities so as to reduce the concentration of at least one undesired halogenated hydrocarbon containing impurity, the process comprising contacting the composition with an adsorbent comprising a carbon molecular sieve.
    Type: Application
    Filed: October 30, 2017
    Publication date: February 15, 2018
    Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventors: Andrew P. SHARRATT, John HAYES, Claire REES
  • Publication number: 20180038619
    Abstract: The invention provides a composition comprising 1,1-difluoroethene (R-1132a); a second component selected from the group consisting of hexafluoroethane (R-116), ethane (R-170) and mixtures thereof; and, optionally carbon dioxide (CO2, R-744).
    Type: Application
    Filed: October 18, 2017
    Publication date: February 8, 2018
    Inventors: Robert E. Low, Andrew P. Sharratt
  • Publication number: 20180022671
    Abstract: A chromia-based fluorination catalyst comprising at least one additional metal selected from zinc, nickel, aluminium and magnesium in which from 0.1 to 8.0% by weight of the catalyst is in the form of one or more crystalline compounds of chromium and/or one or more crystalline compounds of the at least one additional metal. The catalyst can be used in processes for producing a fluorinated hydrocarbon.
    Type: Application
    Filed: September 13, 2017
    Publication date: January 25, 2018
    Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventors: ANDREW P. SHARRATT, JOHN D. SCOTT
  • Patent number: 9862659
    Abstract: A new chromium-containing fluorination catalyst is described. The catalyst comprises an amount of zinc that promotes activity and from 0.1 to 8.0% by weight of the chromium in the catalyst based on the total weight of the chromium is present as chromium (VI). The use of the zinc-promoted, chromium-containing catalyst in a fluorination process in which a hydrocarbon or halogenated hydrocarbon is reacted with hydrogen fluoride in the vapor-phase at elevated temperatures is also described.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: January 9, 2018
    Assignee: MEXICHEM AMANCO HOLDING S.A. de C.V.
    Inventor: Andrew P. Sharratt
  • Patent number: 9835365
    Abstract: The invention provides a composition comprising 1,1-difluoroethene (R-1132a); a second component selected from the group consisting of hexafluoroethane (R-116), ethane (R-170) and mixtures thereof; and, optionally carbon dioxide (CO2, R-744).
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: December 5, 2017
    Assignee: Mexichem Fluor S.A. de C.V.
    Inventors: Robert E. Low, Andrew P. Sharratt
  • Patent number: 9790149
    Abstract: A process for preparing 2,3,3,3-tetrafluoropropene (CF3CF?CH2). 3,3,3-trifluoro-2-chloropropene (CF3CCl?CH2) is fluorinated with HF in the vapour phase in the presence of a chromia-containing catalyst to produce an intermediate composition 1,1,1,2,2-pentafluoropropane (CF3CF2CH3), which is dehydrofluorinated to produce CF3CF?CH2.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: October 17, 2017
    Assignee: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventors: Andrew P Sharratt, Leslie R Seddon
  • Patent number: 9790152
    Abstract: A process for removing one or more undesired (hydro)halocarbon compounds containing a ?CF2 moiety from a (hydro)fluoroalkene that does not contain a ?CF2 moiety, the process comprising contacting a composition comprising the (hydro)fluoroalkene and one or more undesired (hydro)halocarbon compounds with an aluminum-containing absorbent, activated carbon, or a mixture thereof, wherein the or each undesired (hydro)halocarbon compound is present in an amount of from about 0.1 to about 1000 ppm, based on the weight of the composition comprising the R-1234yf and one or more undesired (hydro)halocarbon compounds.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: October 17, 2017
    Assignee: Mexichem Amanco Holding S.A. de C.V.
    Inventors: Andrew P. Sharratt, Claire E. McGuinness, John Hayes
  • Patent number: 9771309
    Abstract: A chromia-based fluorination catalyst comprising at least one additional metal selected from zinc, nickel, aluminum and magnesium in which from 0.1 to 8.0% by weight of the catalyst is in the form of one or more crystalline compounds of chromium and/or one or more crystalline compounds of the at least one additional metal. The catalyst can be used in processes for producing a fluorinated hydrocarbon.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: September 26, 2017
    Assignee: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventors: Andrew P Sharratt, John D Scott
  • Publication number: 20170121257
    Abstract: A process for removing one or more undesired (hydro)halocarbon compounds containing a ?CF2 moiety from a (hydro)fluoroalkene that does not contain a ?CF2 moiety, the process comprising contacting a composition comprising the (hydro)fluoroalkene and one or more undesired (hydro)halocarbon compounds with an aluminum-containing absorbent, activated carbon, or a mixture thereof, wherein the or each undesired (hydro)halocarbon compound is present in an amount of from about 0.1 to about 1000 ppm, based on the weight of the composition comprising the R-1234yf and one or more undesired (hydro)halocarbon compounds.
    Type: Application
    Filed: January 17, 2017
    Publication date: May 4, 2017
    Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.
    Inventors: ANDREW P. SHARRATT, CLAIRE E. MCGUINNESS, JOHN HAYES