Patents Assigned to Mexichem Amanco Holding S.A. de C.V.
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Patent number: 8367879Abstract: A method of catalytically converting 2,2, dichlorohexafluoropropane (HFC-216aa) into 2 chloro 1,1,1,2,3,3,3 heptafluoropropane (HFC-217ba) including the step of exposing the 2,2 dichlorohexafluoropropane to a chromium-containing catalyst comprising a metal oxide, a halogenated metal oxide or a metal oxyhalide, which chromium-containing catalyst comprises 0.01% to 5.0% by weight zinc or a compound of zinc.Type: GrantFiled: November 10, 2008Date of Patent: February 5, 2013Assignee: Mexichem Amanco Holding S.A. de C.V.Inventors: Andrew P. Sharratt, John C. McCarthy
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Patent number: 8333901Abstract: The invention provides a heat transfer composition comprising R-1234ze(E), R-32 and 1,1,1,2-tetrafluoroethane (R-134a).Type: GrantFiled: February 16, 2011Date of Patent: December 18, 2012Assignee: Mexichem Amanco Holding S.A. de C.V.Inventor: Robert E. Low
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Publication number: 20120305830Abstract: The invention provides a heat transfer composition consisting essentially of from about 45 to about 58% by weight trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)) and from about 42 to about 55% by weight of 1,1-difluoroethane (R-152a). The invention also provides a heat transfer composition comprising from about 40 to about 60% by weight R-152a, from about 5 to about 50% R-134a, and from about 5 to about 50% by weight R-1234ze(E).Type: ApplicationFiled: February 14, 2011Publication date: December 6, 2012Applicant: Mexichem Amanco Holdings S.A. de C.V.Inventor: Robert E. Low
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Publication number: 20120305480Abstract: The invention provides a heat transfer composition consisting essentially of from about 62 to about 78% by weight trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)) and from about 22 to about 38% by weight of 1,1-difluoroethane (R-152a). The invention also provides a heat transfer composition comprising from about 20 to about 40% by weight R-152a, from about 5 to about 55% R-134a, and from about 5 to about 75% by weight R-1234ze(E).Type: ApplicationFiled: February 14, 2011Publication date: December 6, 2012Applicant: Mexichem Amanco Holdings S.A de C.V.Inventor: Robert E. Low
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Publication number: 20120298909Abstract: The invention provides a heat transfer composition comprising (i) from about 45 to about 75% by weight 2,3,3,3-tetrafluoropropene (R-1234yf); and (ii) from about 25 to about 55% by weight 1,1,1,2-tetrafluoroethane (R-134a). A heat transfer composition comprising, optionally consisting essentially of, (i) from about 20 to about 90% by weight R-1234yf; (ii) from about 10 to about 60% by weight R-134a; and (iii) from about 1 to about 20% by weight R-32 is also provided.Type: ApplicationFiled: April 16, 2010Publication date: November 29, 2012Applicant: MEXICHEM AMANCO HOLDING S.A. de C.V.Inventor: Robert E. Low
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Publication number: 20120203037Abstract: The invention relates to a process for removing one or more undesired (hydro)halocarbon compounds from a (hydro)fluoroalkene, the process comprising contacting a composition comprising the (hydro)fluoroalkene and one or more undesired (hydro)halocarbon compounds with an aluminium-containing absorbent, activated carbon, or a mixture thereof.Type: ApplicationFiled: October 8, 2010Publication date: August 9, 2012Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventors: Andrew P Sharratt, Claire E McGuiness, John Hayes
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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: 20120126187Abstract: The invention provides a heat transfer composition comprising: (i) 1,3,3,3-tetrafluoroprop-1-ene (R1234ze, CF3CH?CHF) (ii) a second component comprising R-1243zf, (3,3,3 trifluoropropene) or a difluoropropene (R-1252) selected from R-1252zf, R-1252yf, R-1252ye R-1252ze and R-1252zc, and mixtures thereof; and (iii) a third component selected from R32 (difluoromethane), R744 (CO2), R41 (fluoromethane), R1270 (propene), R290 (propane), R161 (fluoroethane) and mixtures thereof.Type: ApplicationFiled: April 16, 2010Publication date: May 24, 2012Applicant: MEXICHEM AMANCO HOLDING S.A. de C.V.Inventor: Robert E. Low
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Publication number: 20120116131Abstract: 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: ApplicationFiled: September 4, 2009Publication date: May 10, 2012Applicant: Mexichem Amanco Holdings S.A. DE C.V.Inventor: Andrew P. Sharratt
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Publication number: 20120071699Abstract: The invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising contacting a compound of formula CX3CH2CH2X or CX3CH?CH2, with hydrogen fluoride (HF) in the presence of a zinc/chromia catalyst, wherein each X independently is F, Cl, Br or I, provided that in the compound of formula CX3CH?CH2, at least one X is not F.Type: ApplicationFiled: April 9, 2010Publication date: March 22, 2012Applicant: MEXICHEM AMANCO HOLDING S.A. DE C.V.Inventors: Andrew Paul Sharratt, Claire McGuinness
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Publication number: 20110260095Abstract: The invention provides a heat transfer composition comprising R-1243zf, R-32 (difluoromethane) and R-161 (fluoroethane).Type: ApplicationFiled: December 2, 2009Publication date: October 27, 2011Applicant: MEXICHEM AMANCO HOLDINGS S.A. DE C.V.Inventor: Robert Elliott Low
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Publication number: 20110258146Abstract: The invention provides a heat transfer composition comprising a minimum of about 80% by weight of R-1243zf and a maximum of 20% by weight of R-32, based on the total weight of the composition.Type: ApplicationFiled: December 2, 2009Publication date: October 20, 2011Applicant: MEXICHEM AMANCO HOLDINGS S.A. DE C.V.Inventor: Robert Elliott Low
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Publication number: 20110258147Abstract: The invention provides a heat transfer composition comprising: (ii) R-1243zf; (iii) a second component selected from R-32 (difluoromethane), R-744 (CO)2, R-41 (fluoromethane), R-1270 (propene), R-290 (propane), R-161 (fluoroethane) and mixtures thereof; and (iv) a third component selected from R-134a (1,1,1,2-tetrafluoroethane), R-125 (pentafluoroethane), R-1234yf (2,3,3,3-tetrafluoroprop-1-ene) and mixtures thereof.Type: ApplicationFiled: December 2, 2009Publication date: October 20, 2011Applicant: MEXICHEM AMANCO HOLDINGS S.A. DE C.V.Inventor: Robert Elliott Low
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Publication number: 20110191268Abstract: The invention provides a heat transfer composition comprising R-1234ze(E), R-32 and 1,1,1,2-tetrafluoroethane (R-134a).Type: ApplicationFiled: February 16, 2011Publication date: August 4, 2011Applicant: Mexichem Amanco Holding S.A. de C.V.Inventor: ROBERT E. LOW
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Publication number: 20110184890Abstract: A heat transfer composition comprising trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), difluoromethane (R-32) and 1,1-difluoroethane (R-152a).Type: ApplicationFiled: January 12, 2011Publication date: July 28, 2011Applicant: Mexichem Amanco Holding S.A. de C.V.Inventor: ROBERT E. LOW
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Publication number: 20110173997Abstract: Heat transfer compositions are usable in their own right or are suitable as a replacement for existing refrigeration usages. The compositions possess a reduced Greenhouse Warming Potential, yet have a capacity and energy efficiency (which may be conveniently expressed as the “Coefficient of Performance”) ideally within 20% of the values of those attained using R-134a, and preferably within 10% or less (e.g. about 5%) of these values.Type: ApplicationFiled: March 29, 2011Publication date: July 21, 2011Applicant: MEXICHEM AMANCO HOLDING, S.A. de C.V.Inventors: ROBERT E. LOW, Stuart Corr
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Publication number: 20110162410Abstract: A heat transfer composition comprising trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), carbon dioxide (R-744) and a third component selected from difluoromethane (R-32), 1,1-difluoroethane (R-152a), fluoroethane (R-161), 1,1,1,2-tetrafluoroethane (R-134a), propylene, propane and mixtures thereof.Type: ApplicationFiled: January 12, 2011Publication date: July 7, 2011Applicant: Mexichem Amanco Holding S.A. de C.V.Inventor: ROBERT E. LOW
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Publication number: 20110112338Abstract: 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: May 15, 2009Publication date: May 12, 2011Applicant: MEXICHEM/ AMANCO HOLDING S.A. DE C.V.Inventors: John W. Smith, Claire McGuiness, Andrew P. Sharratt, Andrew M. Taylor