MEXICHEM AMANCO HOLDINGS S.A. DE C.V.
|MEXICHEM AMANCO HOLDINGS S.A. DE C.V. Patent applications|
|Patent application number||Title||Published|
|20140230812||COMPOSITIONS COMPRISING SALBUTAMOL SULPHATE - A pharmaceutical composition is described that is suitable for delivery from a pressurised container. The composition is 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 oleic acid; and (c) a drug component that consists of salbutamol sulphate. The pharmaceutical composition can be delivered using a metered dose inhaler (MDI).||08-21-2014|
|20140021399||METHOD FOR PREPARING A TERNARY OR HIGHER ZEOTROPIC REFRIGERANT MIXTURE - A method for preparing a ternary or higher zeotropic refrigerant mixture comprising components of different volatilities is described. The method comprises: mixing together the less volatile components of the mixture in a pre-blending process; and separately adding the most volatile component to the pre-blended mixture by pressure or mass flow control so that the desired initial liquid composition is attained. The liquid zeotropic refrigerant mixture that is prepared may be transferred from a container in which it is held to another container or to a piece of equipment that is to use the refrigerant mixture. This method comprises the steps of: removing at least a portion of the prepared liquid zeotropic refrigerant mixture from a container in which it is held; charging the liquid zeotropic refrigerant mixture that is removed to another container or to a piece of equipment in which it is to be used; and adding at least the most volatile component of the refrigerant mixture to the holding container to compensate for the removal of liquid refrigerant mixture therefrom.||01-23-2014|
|20120305830||HEAT TRANSFER COMPOSITIONS - 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).||12-06-2012|
|20120305480||HEAT TRANSFER COMPOSITIONS - 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).||12-06-2012|
|20120116131||CATALYST AND PROCESS USING THE CATALYST - 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.||05-10-2012|
|20110260095||Heat Transfer Compositions - The invention provides a heat transfer composition comprising R-1243zf, R-32 (difluoromethane) and R-161 (fluoroethane).||10-27-2011|
|20110258147||Heat Transfer Compositions - 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.||10-20-2011|
|20110258146||Heat Transfer Compositions - 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.||10-20-2011|
Patent applications by MEXICHEM AMANCO HOLDINGS S.A. DE C.V.