Abstract: Compositions comprise: (a) a material selected from the group consisting of antihistamines, stabilizers, salts thereof, and combinations thereof; and (b) a vasoconstrictor, decongestant, or a salt thereof, provided when the material consists of an antihistamine or a salt thereof, at least one antihistamine other than ketotifen and salts thereof is present. In certain embodiments, the compositions have a pH maintainable at about 5 or less during storage. The compositions can be used to treat, alleviate or ameliorate ocular allergic conditions.

Abstract: A process is provided for the production of a catalytically active carbonaceous char. By this process, a nitrogen-containing compound is combined with an uncarbonized nitrogen-poor carbon-containing material. The resulting mixture is then carbonized and oxidized at temperatures less than 500° C. The resulting char is next heated to temperatures greater than 500° C and subsequently activated with H2O, CO2, or O2, singly or in any combination, to result in the catalytically active carbonaceous char. The resulting catalytically active carbonaceous char has utility for the chemical conversion of peroxides, hydrides, SOX, NOX, and chloramines in liquid and/or gaseous media.

Abstract: The present invention is a reactive adsorption process for separating NOx (NO and NO2/N2O4) from N2O in a mixture. The process comprises (A) selectively converting NO to NO2/N2O4 in a mixture with an oxidant and (B) selectively adsorbing NO2/N2O4 from the mixture by an adsorbent and © recovering a stream of N2O having a substantially reduced NOx concentration. The adsorbed NOx can be recovered from the adsorbent by elevated temperature, reduced pressure, inert gas purge, water wash or any combination thereof.

Abstract: A process for producing an enriched gas stream substantially continuously in first and second adsorption zones by (a) serially passing co-currently a gaseous mixture containing the gas to be enriched through a first adsorption zone having a primary adsorption column and an auxiliary column under pressure to produce an enriched gas stream; (b) discontinuing the flow of gaseous mixture prior to breakthrough and immediately thereafter equalizing the pressure in the first adsorption zone with the pressure in the primary column of the second zone by substantially simultaneously (i) equalizing the auxiliary column from its outlet to the outlet of the primary column substantially to the same pressure in the primary column of the second adsorption zone, and simultaneously equalizing from the inlet of the primary column of the first adsorption zone to the inlet of the primary column of the second adsorption zone; and (ii) pressurizing the auxiliary column of the second adsorption zone substantially to the same pressur

Abstract: Gaseous mixtures are separated on a two adsorption zone carbon molecular sieve pressure swing adsorption system each zone consisting of either one or two adsorption columns. This process includes the pressurization of an adsorption zone with lean gas in the range of 70 to 120 percent of the adsorption pressure.

Abstract: Gaseous mixtures are separated on a two zone (two columns connected in series per zone) carbon molecular sieve pressure swing adsorption system to produced a gas stream enriched in at least one component. This process includes the partial pressurization of an adsorbent zone with lean gas in the range of 40 to 90 percent of the adsorption pressure.