Abstract: Trichloroethylene is stabilized against oxidation by adding a nitrogen-containing compound selected from among .alpha.-(dimethylamino) propionitrile, thiazole, 1-aza-2-alkoxy-1-cycloalkene and 1,5-diazabicyclo[5.4.0]undec-5-ene. These may be used in combination with ethyl acetate, acetonitrile and pyrazine.

Abstract: Partially chelated solutions of zinc have been prepared by employing ammonium salts of EDTA together with excess ammonia and dissolving therein an oxide or hydroxide of zinc.

Abstract: A stabilized chlorinated solvent composition useful in removing grease from metals wherein the solvent is perchloroethylene or trichloroethylene, and the stabilizer is N-methyl pyrrole in combination with ethyl acetate, acetonitrile or pyrazine.

Abstract: A method of preparing a supported catalyst of a gold-silver alloy useful for making ethylene oxide by applying a gold salt to a suitable support, reducing it to gold metal, then applying a silver salt and reducing it to silver, thereby forming a gold-silver alloy by diffusion, on the support.

Abstract: A process for making Fe-EDTA chelate comprising adding iron oxide at a ratio of <1 mole iron/mole EDTA to a mixture of NH.sub.4 OH and EDTA wherein NH.sub.3 /EDTA mole ratio is from 1 to not more than 1.5, heating until reaction is complete, cooling to about 60.degree. C. and adding sufficient NH.sub.3 to dissolve and maintain Fe-EDTA chelate in solution, cooling to room temperature and oxidizing Fe++ to Fe+++. The process provides (1) a minimum of foaming and sludge formation during the reaction, (2) rapid dissolution of iron oxide and (3) a chelate product substantially completely in the ferric state.

Abstract: An improved process of making a silver catalyst which comprises impregnating a suitable support with an aqueous ammoniacal solution of a silver salt of an organic carboxylic acid and reducing said salt in the presence of a polyhydroxy compound.

Abstract: A dehydration catalyst and process for making an alkylenimine from an alkanolamine wherein the catalyst contains oxides of either tantalum or niobium together with the oxides of iron and chromium and in which the ratios of the metals are:M.sub.10 Fe.sub.0.5-2.9 Cr.sub.0.3-1.7wherein M is tantalum or niobium.

Abstract: A method of purifying bisphenols by (1) crystallizing the crude bis from a single liquid phase containing water, bis and an organic solvent, (2) stripping the remaining mother liquor (containing the impurities) of solvent and water, and (3) mixing it with phenol, (4) contacting the mixture of phenol and mother liquor with a cation exchange resin to convert the impurity to the desired product, (5) stripping the phenol and (6) recycling the remainder to the initial crystallizing step.

Abstract: A stabilized methylchloroform for use in vapor degreasing which is stable in the presence of metals which contains pyrazine, dimethoxypropane, an acetylenic alcohol and a nitroalkane or a methylfuran. Such combination prevents corrosion of aluminum, iron, copper and zinc and the decomposition of the solvent.

Abstract: A method for preparing acrylic acid by oxidation of acrolein over a new and improved catalyst providing conversions of acrolein of greater than 99% with yields of acrylic acid in excess of 95%. The catalyst consists essentially of the oxides of molybdenum, vanadium, chromium, copper and titanium and optionally silicon on an inert carrier. Catalysts useful in the process contain the elements previously mentioned in the atomic ratios ofMo.sub.15 V.sub.5-10 Cu.sub.2-5 Cr.sub.0.2-2 Ti.sub.

Abstract: A method of shipping liquid ethylene oxide in a manner which reduces the explosive hazard during shipment by combining the liquid ethylene oxide with at least 52% of liquid propylene oxide based on the total weight of the mixture. It is especially useful for bulk liquid shipment marine vessels and the ethylene oxide is easily separated from the mixture for use by a simple distillation.

Abstract: A stabilized methylchloroform solvent useful in degreasing operations in which the alkylene oxide stabilizer component normally employed is replaced by a tricyclic or quadricyclic compound containing a fused cyclopropane ring.

Abstract: Methylchloroform formulations are stable in the presence of zinc when they contain cyclopropyl methyl carbinol in place of an epoxide as a component of the stabilizer.

Abstract: The in situ production of hydrochloric acid in a subterranean formation to increase the flow of gas or oil therefrom by decomposing a polyhalohydrocarbon in the formation is accomplished at lower temperature by injecting the polyhalohydrocarbon together with isopropyl alcohol or a Lewis acid, e.g. FeCl.sub.3, or a mixture of the alcohol and Lewis acid.

Abstract: A process for making nitroalkanes in which an alpha-bromoalkanoic acid is reacted with an alkali metal nitrite, e.g. NaNO.sub.2, in the presence of the magnesium ion (Mg.sup.++) in an aprotic solvent to form a chelate. Neutralization of the chelate with a mineral acid produces a nitroalkane having one less carbon atom than the reactant bromoalkanoic acid.

Abstract: An improved process of preparing an aqueous solution of the zinc chelate of N-(2-hydroxyethyl) iminodiacetic acid wherein ammonia is added to the aqueous solution during its preparation to increase the solubility of zinc therein.

Abstract: An alkyl alkynyl sulfide can be employed to stabilizer methylchloroform against reaction with the common metals of construction. Stabilization is enhanced by combining with other known stabilizers. Nitroalkanes, alkyl nitrates or alkynols may be employed to eliminate the need of dioxane and alkylene oxides, while the use of the alkyl nitrates or alkynols eliminates the need for a nitroalkane in the stabilizer formulation.

Abstract: After quenching the effluent gas from a methanol hydrochlorination reactor to condense most of the water and remove excess HCl, the wet (saturated) methyl chloride is mixed with hydrogen chloride to provide a gas mixture having a methyl chloride:HCl ratio of from about 0.4:1 to about 4:1. This mixture is then contacted with cold (-16.degree. to -21.degree. C.) concentrated (50 to 59%) aqeous hydrochloric acid to remove the water to a low level. Additionally an undesirable by-product, dimethylether, is removed along with the water. Alternatively the wet gas mixture may be cooled to that same temperature by passing over cooling coils, or other convenient means, to remove the water.

Abstract: A dehydration catalyst containing tungsten oxide on a low surface area support and having a silica coating thereon. The catalyst has increased life and is useful for the dehydration of alkanolamines in making alkylenimines, e.g. ethanolamine is dehydrated to ethylenimine.

Abstract: Propylene glycol and dipropylene glycol diesters are prepared by reacting dichloropropyl ethers with a carboxylic acid salt, e.g., sodium acetate, and the corresponding carboxlyic acid, e.g., acetic acid. The by-product sodium chloride is insoluble in the acetic acid and easily separated from the reaction mixture. The diesters can be hydrolyzed to their respective glycols.