Abstract: Stable water-in-oil emulsion of water soluble polymers are disclosed. The emulsions are formed by selecting a suitable continuous phase consisting of an inert hydrocarbon liquid followed by selecting suitable surfactants based on the properties of the organic liquid.

Abstract: Dry acrylamide is produced by reacting acrylonitrile with from 0.3 to 1 mole of water in the presence of a metallic nitrile conversion catalyst. The reaction is conducted under conditions of pressure and temperature and other reaction conditions to convert at least 30% by weight of the nitrile to acrylamide. This reaction produces a solution of acrylamide dissolved in nitrile which then is either treated by means of cooling or pressure reduction to precipitate acrylamide crystals from the reaction mixture, which crystals are then recovered.

Abstract: Water-in-oil emulsions of water soluble vinyl addition polymers of the type comprising from:A. 30 to 95% by weight of the emulsion of an aqueous phase comprising water and monomer;B. 10 to 50% by weight of the emulsion of a water soluble vinyl addition polymer;C. 5 to 70% by weight of the emulsion of a hydrophobic liquid;D. and 0.1 to 21% by weight of the emulsion of a water-in-oil emulsifying agent;Can be rendered more stable to prolong storage by subjecting the emulsion to high shear mixing prior to polymerization.

Abstract: ClO.sub.2 and its water-soluble salts are catalysts for water-soluble bisulfites or sulfites when these latter compounds are used as oxygen scavengers in aqueous systems.

Abstract: A defoaming composition comprising a bis-amide, a liquid hydrocarbon oil, and optionally a surfactant having an HLB of at least 6. The composition may be used to abate and prevent foam formation in sugar beet raw liquor.

Abstract: Water used to wash the air in paint or lacquer spray booths in order to remove over-sprayed paint or lacquers is treated with a blend of a primary amino alcohol, a polyether polyamine and a water soluble salt of an amphoteric metal to reduce the tackiness of paint and lacquer solids and thereby reduce the tendency of over-sprayed paints and lacquers to adhere to walls, ceilings and floors of said spray booths and also to condition the paint and lacquer solids removed with the water so that they can be separated and the water recycled for further use in washing the air in the spray booth.

Abstract: An improved method for the introduction of chlorine into solids contact clarifiers is disclosed. The method allows treatment of effluent by chlorine but, does not allow chlorine to come into contact with the solids contact zone allowing for better coagulation by the use of water soluble polymers, while regulating microbiological surface growths effectively.

Abstract: Mother liquor removal from acrylamide crystals is improved by draining such crystals in the presence of a paraffinic hydrocarbon liquid.

Abstract: This invention discloses novel amino acid-epihalohydrin copolymers with good chelating properties.

Abstract: Windshield washer fluids of the type comprising a major portion of water, one or more water-soluble alcohols which are predominantly monohydric alcohols capable of depressing the freezing point of water and a surfactant can be improved in their operational efficiency by adding thereto from between 10-1,000 ppm of an acrylamide polymer having a molecular weight of at least 10,000.

Abstract: A method for stopping leaks in closed cooling systems by adding thereto a finely divided acrylamide polymer.

Abstract: Anhydrous magnesium chloride may be prepared for magnesium chloride hydrate by the following sequence of process steps:A. mixing together a magnesium chloride hydrate said hydrate containing minor amounts of water soluble sulfate and boron compounds as impurities with diethyl ether of tetraethylene glycol to prepare 0.1 - 6.0% by weight slurry of MgCl.sub.2 in the diethyl ether of tetraethylene glycol and an azeotropic agent having a boiling point less than the diethyl ether of tetraethylene glycol in a quantity sufficient to remove water from said slurry;B. distilling water from said slurry wherein an anhydrous solution of MgCl.sub.2 in diethyl ether of tetraethylene glycol containing the water soluble sulfate and boron compounds as insoluble impurities is formed;C. separating said MgCl.sub.2 solution from the insoluble impurities;D. adding to the MgCl.sub.2 solution about 3.0 moles of ethylene glycol per mole of MgCl.sub.2 present so as to prepare a MgCl.sub.2.3 moles ethylene glycol complex precipitate;E.

Abstract: Pure, high surface area alumina is produced by the reaction of aluminum salts with lower aliphatic epoxides in an aqueous media and is washed with aqueous solutions of ammonia which have a pH of at least 7.

Abstract: A process for the liquid/liquid extraction of aromatic hydrocarbons from organic solvent mixtures containing aromatic and aliphatic hydrocarbons by the use of certain ethers and esters as extractants is disclosed.

Abstract: A process for preparing both cationic and anionic acrylamide polymers through the reaction of a formaldehyde-secondary amine or formaldehyde-sulfurous acid adduct with a water-in-oil emulsion of finely divided acrylamide polymer. The resulting products are further characterized in that they can be inverted easily into aqueous solution. Compositions produced by the invention are also disclosed.

Abstract: A process for preparing high molecular weight substantially linear condensaton polymers of lower aliphatic secondary amines and difunctional epoxide compounds in concentrations of from 60-85% by weight in aqueous solution is disclosed.

Abstract: Particulate matter common to sintering operations can be substantially reduced by the addition to the sinter mix prior to fusion of an alkali metal or ammonium silicate.

Abstract: Particulate matter common to sintering operations can be substantially reduced by the addition to the sinter mix prior to fusion of a soluble lignosulfonate.

Abstract: An improved method of incinerating sewage sludge by adding to the sewage sludge prior to incineration a composition consisting of a compound of metal effective in lowering the ignition temperature of carbon and magnesium oxide.

Abstract: A method for increasing the yield of tall oil soaps from Kraft black liquor in the manufacture of paper pulp by treating the Kraft black liquor with a sodium lignosulfonate solution containing sodium hydroxide. In addition this solution may also contain a low molecular weight polyacrylate.