Patents Assigned to MEXICHEM AMANCO HOLDINGS S.A. DE C.V.
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Patent number: 11760911Abstract: A heat transfer composition includes: (i) trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)); (ii) a second component selected from difluoromethane (R-32), propene (R-1270), propane (R290) and mixtures thereof; (iii) a third component selected from pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-34a), and mixtures thereof; and optionally (iv) a fourth component selected from fluoroethane (R-161), 1,1-difluoroethane (R-152a) and mixtures thereof.Type: GrantFiled: November 10, 2020Date of Patent: September 19, 2023Assignee: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventor: Robert E. Low
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Patent number: 11267772Abstract: 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: GrantFiled: June 9, 2020Date of Patent: March 8, 2022Assignee: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventors: John W Smith, Claire McGuinness, Andrew P Sharratt, Andrew M Taylor
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Publication number: 20210107848Abstract: 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: ApplicationFiled: December 22, 2020Publication date: April 15, 2021Applicant: Mexichem Amanco Holding S.A. de C.V.Inventor: Andrew P. Sharratt
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Patent number: 10974227Abstract: 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: GrantFiled: July 11, 2018Date of Patent: April 13, 2021Assignee: Mexichem Amanco Holding S.A. de C.V.Inventor: Andrew P Sharratt
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Patent number: 10959965Abstract: A pharmaceutical composition is described that is suitable for delivery from a pressurised container. The composition is preferably free of polar excipients and comprises: (a) a propellant component that consists essentially of 1,1-difluoroethane (R-152a); (b) a surfactant component that comprises at least one surfactant compound other than oleic acid; and (c) a drug component that consists of salbutamol sulphate. The pharmaceutical composition can be delivered using a metered dose inhaler (MDI).Type: GrantFiled: April 17, 2014Date of Patent: March 30, 2021Assignee: Mexichem Amanco Holding S.A. de C.V.Inventors: Stuart Corr, Timothy James Noakes
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Patent number: 10906853Abstract: 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: GrantFiled: November 17, 2017Date of Patent: February 2, 2021Assignee: Mexichem Amanco Holding S.A. De C.V.Inventor: Andrew P. Sharratt
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Patent number: 10844260Abstract: The invention provides a heat transfer composition comprising: (i) trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)); (ii) a second component selected from difluoromethane (R-32), propene (R-1270) propane (R290) and mixtures thereof; (iii) a third component selected from pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), and mixtures thereof; and optionally (iv) a fourth component selected from fluoroethane (R-161), 1,1-difluoroethane (R-152a) and mixtures thereof.Type: GrantFiled: April 23, 2019Date of Patent: November 24, 2020Assignee: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventor: Robert E. Low
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Publication number: 20200325089Abstract: 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: ApplicationFiled: June 9, 2020Publication date: October 15, 2020Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventors: JOHN W. SMITH, CLAIRE MCGUINNESS, ANDREW P. SHARRATT, ANDREW M. TAYLOR
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Patent number: 10683248Abstract: 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: GrantFiled: April 24, 2018Date of Patent: June 16, 2020Assignee: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventors: John W Smith, Claire McGuinness, Andrew P Sharratt, Andrew M Taylor
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Publication number: 20200179310Abstract: A pharmaceutical composition is described that is suitable for delivery from a pressurised container. The composition is preferably free of polar excipients and comprises: (a) a propellant component that consists essentially of 1,1-difluoroethane (R-152a); (b) a surfactant component that comprises at least one surfactant compound other than oleic acid; and (c) a drug component that consists of salbutamol sulphate. The pharmaceutical composition can be delivered using a metered dose inhaler (MDI).Type: ApplicationFiled: February 5, 2020Publication date: June 11, 2020Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventors: Stuart Corr, Timothy J. Noakes
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Patent number: 10668018Abstract: A pharmaceutical solution for a medication delivery apparatus, especially a metered dose inhaler, is described. The pharmaceutical solution comprises: (a) a liquefied propellant component consisting essentially of and preferably consisting entirely of 1,1-difluoroethane (R-152a); (b) ethanol; and (c) a drug component dissolved in the propellant/ethanol mixture consisting of at least one drug selected from the group consisting of beclomethasone dipropionate (BDP) and fluticasone propionate (FP).Type: GrantFiled: January 16, 2019Date of Patent: June 2, 2020Assignee: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventors: Stuart Corr, Timothy James Noakes
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Publication number: 20200101417Abstract: A method of drying a fluid comprising a fluoropropene, which method comprises the step of contacting the fluid with a desiccant comprising a molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. A heat transfer device comprising a heat transfer fluid comprising a fluoropropene, and a desiccant comprising a molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. Preferably, the fluoropropene is R134yf or R-1225ye.Type: ApplicationFiled: December 3, 2019Publication date: April 2, 2020Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventors: ROBERT ELLIOTT LOW, STUART CORR
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Patent number: 10493399Abstract: A method of drying a fluid comprising a fluoropropene, which method comprises the step of contacting the fluid with a desiccant comprising a molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. A heat transfer device comprising a heat transfer fluid comprising a fluoropropene, and a desiccant comprising a molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. Preferably, the fluoropropene is R134yf or R-1225ye.Type: GrantFiled: November 13, 2018Date of Patent: December 3, 2019Assignee: Mexichem Amanco Holding S.A. de C.V.Inventors: Robert Elliott Low, Stuart Corr
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Patent number: 10442743Abstract: The present invention provides a process for the preparation of a (hydro)(chloro)fluoroalkene by contacting a reagent stream comprising a hydrochlorofluoroalkane with a catalyst in a reactor to dehydrochlorinate at least a portion of the hydrochlorofluoroalkane to produce a product stream comprising the (hydro)(chloro)fluoroalkene and hydrogen chloride (HCl), wherein the catalyst is selected from the group consisting of metal oxide catalysts, metal halide catalysts, zero-valent metal catalysts, carbon-based catalysts and mixtures thereof, and wherein (i) the catalyst is chlorinated prior to contacting it with the reagent stream comprising the hydrochlorofluoroalkane; and/or (ii) the contacting step is carried out in the presence of a HCl co-feed.Type: GrantFiled: April 16, 2018Date of Patent: October 15, 2019Assignee: MEXICHEM AMANCO HOLDING S.A. de C.V.Inventors: Andrew Paul Sharratt, Claire Nicola Rees, Maxine Doran
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Publication number: 20190249056Abstract: The invention provides a heat transfer composition comprising: (i) trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)); (ii) a second component selected from difluoromethane (R-32), propene (R-1270) propane (R290) and mixtures thereof; (iii) a third component selected from pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), and mixtures thereof; and optionally (iv) a fourth component selected from fluoroethane (R-161), 1,1-difluoroethane (R-152a) and mixtures thereof.Type: ApplicationFiled: April 23, 2019Publication date: August 15, 2019Applicant: MEXICHEM AMANCO HOLDING S.A. DE. C.V.Inventor: ROBERT E LOW
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Patent number: 10266736Abstract: The invention provides a heat transfer composition comprising: (i) trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)); (ii) a second component selected from difluoromethane (R-32), propene (R-1270) propane (R290) and mixtures thereof; (iii) a third component selected from pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), and mixtures thereof; and optionally (iv) a fourth component selected from fluoroethane (R-161), 1,1-difluoroethane (R-152a) and mixtures thereof.Type: GrantFiled: September 11, 2015Date of Patent: April 23, 2019Assignee: Mexichem Amanco Holding S.A. de C.V.Inventor: Robert E. Low
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Patent number: 10258568Abstract: A pharmaceutical solution for a medication delivery apparatus, especially a metered dose inhaler, is described. The pharmaceutical solution comprises: (a) a liquefied propellant component consisting essentially of and preferably consisting entirely of 1,1-difluoroethane (R-152a); (b) ethanol; and (c) a drug component dissolved in the propellant/ethanol mixture consisting of at least one drug selected from the group consisting of beclomethasone dipropionate (BDP) and fluticasone propionate (FP).Type: GrantFiled: August 29, 2016Date of Patent: April 16, 2019Assignee: MEXICHEM AMANCO HOLDINGS S.A. DE C.V.Inventors: Stuart Corr, Timothy James Noakes
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Patent number: 10258569Abstract: A pharmaceutical solution for a medication delivery apparatus, especially a metered dose inhaler, is described. The pharmaceutical solution comprises: (a) a liquefied propellant component consisting essentially of and preferably consisting entirely of 1,1-difluoroethane (R-152a); (b) ethanol; and (c) a drug component dissolved in the propellant/ethanol mixture consisting of at least one drug selected from the group consisting of beclomethasone dipropionate (BDP) and fluticasone propionate (FP).Type: GrantFiled: September 20, 2016Date of Patent: April 16, 2019Assignee: MEXICHEM AMANCO HOLDINGS S.A. DE C.V.Inventors: Stuart Corr, Timothy James Noakes
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Publication number: 20190083927Abstract: A method of drying a fluid comprising a fluoropropene, which method comprises the step of contacting the fluid with a desiccant comprising a molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. A heat transfer device comprising a heat transfer fluid comprising a fluoropropene, and a desiccant comprising a molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. Preferably, the fluoropropene is R134yf or R-1225ye.Type: ApplicationFiled: November 13, 2018Publication date: March 21, 2019Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventors: ROBERT ELLIOTT LOW, STUART CORR
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Patent number: 10189757Abstract: 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: GrantFiled: September 13, 2017Date of Patent: January 29, 2019Assignee: Mexichem Amanco Holding S.A. de C.V.Inventors: Andrew P Sharratt, John D Scott