Abstract: An improved method for detackifying over-sprayed paint, lacquer or enamel entrained in the circulating water of paint spray booths comprises maintaining in the wash water a small amount of an alkaline zinc solution containing ammonium hydroxide and ammonium chloride.

Abstract: The use as flocculants of aluminum chloride/water-soluble cationic polymer compositions having inorganic:polymer weight ratios of at least 5:1 is disclosed. These compositions are especially effective in low turbidity waters.

Abstract: This invention is directed to improved magnesium oxide slurries for use in coating silicon steels prior to high temperature annealing, comprising a calcination-modified magnesium oxide and water. Inorganic salts of barium, chromium, silicon, zinc or aluminum are added to magnesium hydroxide prior to calcination, resulting in a calcined magnesium oxide product having improved properties.This invention is also directed to an improved process for coating silicon steel, using the above described improved magnesium oxide product.

Abstract: The instant invention is directed to a dyed cellulosic material which has been treated with 0.1 to 5%, by weight, based on the weight of said material, of a polymer containing:(A) 50% to 90%, by weight, based on the total weight of the polymer, of selected cationic mer units;(B) 10% to 50%, by weight, based on the total weight of the polymer, of selected reactive mer units; and(C) 0 to 25%, by weight, based on the total weight of the polymer of selected inert mer units.The instant invention is also directed to a process for producing improved wet fast dyed cellulosic material.

Abstract: The instant invention is directed to a polymer, having an intrinsic viscosity of 1.0 to 7.0, preferably 1.5 to 5.0, dl/g in 1.0 M NaCl, prepared from:(A) 2.5 to 45%, by weight, of at least one unsaturated carboxylic acid, or its salt;(B) 5.0 to 85%, by weight, of at least one unsaturated sulfonic acid, or its salt;(C) 2.5 to 15%, by weight, of at least one unsaturated cationic-containing monomer; and(D) 0 to 90%, by weight, of at least one unsaturated non-ionic monomer.The instant invention is also directed to the polymer in combination with an aqueous clay dispersion and the use of the admixture as a filtration aid in drilling muds.

Abstract: The present invention is directed to a method of inhibiting the corrosion of copper and copper alloys in an aqueous system containing oxygen using an effective amount of a polymer prepared from:(A) about 30 to about 70%, by weight, of acrylic acid or methacrylic acid;(B) about 30 to about 70%, by weight, of 2-acrylamido-2-methylpropylsulfonic acid or 2-methacrylamido-2-methylpropylsulfonic acid; and(C) about 15 to about 25%, by weight, of 2-acrylamido-2-methylpropylphosphonic acid or 2-methacrylamido-2-methylpropylphosphonic acid, acrylamide or methacrylamide; wherein the polymer has an intrinsic viscosity of from about 0.05 to about 4.5 dl/g, in 1.0 M NaCl.

Abstract: The present invention is directed to a process to improve the suspended solids removal by the filter cloth used in the clarification of leached uranium ore, comprising contacting the filter cloth with an effective amount of an acrylamide polymer.

Abstract: The present invention is directed to a method to stabilize aluminum ions in recirculating water systems comprising adding to the system 0.1 to 1,000 ppm of a water-soluble polymer having an intrinsic viscosity of 0.05 to 2.5 dl/g in 1.0 M NaCl, prepared from:(A) 35 to 90%, by weight, of an unsaturated carboxylic compound selected from the group consisting of acrylic acid, methacrylic acid, their salts and mixtures thereof; and(B) 10 to 65%, by weight, of an unsaturated sulfonic compound selected from the group consisting of 2-acrylamido-2-methylpropylsulfonic acid, 2-methacrylamido-2-methylpropylsulfonic acid, their salts and mixtures thereof.

Abstract: An improvement in the process for detackifying over-sprayed paint, lacquer or enamel entrained in the water in water wash paint spray operations comprises maintaining in the wash water a small amount of the water-soluble reaction product of a polymer of N-alkyldiallylamine hydrohalide and epihalohydrin.

Abstract: A method of inhibiting corrosion due to dissolved oxygen is disclosed, whereby chelant-stabilized sodium erythorbate, alone or in combination with conventional corrosion inhibitors, is added to boiler water to prevent corrosion by reducing dissolved oxygen levels in boiler feedwater.

Abstract: The instant invention is directed to a process for inhibiting the formation and deposition of iron oxide in aqueous systems using at least 0.1 ppm of an admixture of:(A) a water-soluble polymer having an intrinsic viscosity of 0.05 to 2.5 dl/g, prepared from:(i) 35 to 90%, by weight, of an unsaturated carboxylic acid, or its salt; and(ii) 10 to 65%, by weight, of an unsaturated sulfonic acid, or its salt; and(B) a water-soluble polymer having an intrinsic viscosity of 0.05 to 2.5 dl/g, prepared from:(i) 35 to 90%, by weight, of an unsaturated carboxylic acid, or its salt; and(ii) 10 to 65%, by weight, of an unsaturated pendant polyalkylene oxide compound.The instant invention is also directed to an admixture of:(A) a water soluble polymer, having an intrinsic viscosity of 0.05 to 2.

Abstract: The present invention is directed to a composition which is useful for inhibiting the corrosion of copper and copper alloy metals in contact with an aqueous system which comprises mercaptobenzothiazole and tolyltriazole.The present invention is also directed to a method of inhibiting the corrosion of copper and copper alloy metals in contact with an aqueous system comprising maintaining in the aqueous system at least about 0.1 ppm (parts per million) of a composition comprising mercaptobenzothiazole and tolyltriazole.

Abstract: The instant invention is directed to a surfactant system for use in manufacturing water-in-oil emulsions of water-soluble polymers made from ethylenically unsaturated monomers comprising 25 to 85 percent, by weight, an oil-soluble alkanolamide, 5 to 35 percent, by weight, a polyoxyethylene derivative of a sorbitan ester, and 0 to 50 percent, by weight sorbitan monooleate.

Abstract: The instant invention is directed to a method of inhibiting the precipitation and deposition of alkaline earth metal scales in an aqueous system, comprising adding to said system an effective amount of (a) an anionic polyelectrolyte; and (b) an anionic surfactant, wherein said polyelectrolyte/surfactant ratio ranges from 1000:1 to 1:10, by weight.

Abstract: The present invention is directed to a composition and method for inhibiting the corrosion of copper and copper alloy metals in aqueous systems. The composition comprises mercaptobenzothiazole and added ferrous ions in a ratio of 1:1 to 1:10, by weight. The method comprises adding this composition to the aqueous system being treated.

Abstract: The instant invention is directed to a method for preparing free-flowing, water-soluble polymer gels comprising:(a) reducing the size of water-soluble polymer gels by a size-reduction means, so as to produce polymer gel particles which are less than 1/2 inch in their longest dimension; and(b) adding to the size-reduced polymer gels of Step (a) 0.001 to 20 percent, by weight, of an amphipathic compound, thereby reducing the adhesion of said gel particles to themselves and other substances.The instant invention is also directed to a free-flowing, water-soluble polymer gel admixture comprising:(a) size-reduced, water-soluble polymer gel particles, wherein said gel particles are less than 1/2 inch in their longest dimension; and(b) an amphipathic compound.

Abstract: The instant invention is directed to a process for the manufacture of poly(dimethyldiallyl ammonium chloride) comprising:(a) casting upon a continuous belt apparatus to form a film having a thickness of 1/4 inch to 1 inch an aqueous dimethyldiallyl ammonium chloride solution having a monomer concentration of at least 65 percent, by weight, monomer, said monomer solution also containing a photoreducible dye in a concentration of 1.times.10.sup.-7 to 1.times.10.sup.-4 moles per liter, a mild reducing agent in a concentration of 1.times.10.sup.-5 to 1.times.10.sup.-2 moles per liter and thermal initiator in a concentration of 1.times.10.sup.-5 to 1.times.10.sup.-2 moles per liter;(b) passing of the solution under a series of lights which emit visible light at an intensity of 0.1 to 10,000 foot candles and controlling the temperature of the monomer solution in the range of 5.degree. C. to 65.degree. C.

Abstract: The instant invention is directed to a polymer, having an intrinsic viscosity of 1.0 to 7.0, preferably 1.5 to 5.0, dl/g in 1.0M NaCl, prepared from:(A) 2.5 to 45%, by weight, of at least one unsaturated carboxylic acid, or its salt;(B) 5.0 to 85%, by weight, of at least one unsaturated sulfonic acid, or its salt;(C) 2.5 to 15%, by weight, of at least one unsaturated cationic-containing monomer; and(D) 0 to 90%, by weight, of at least one unsaturated non-ionic monomer.The instant invention is also directed to the polymer in combination with an aqueous clay dispersion and the use of the admixture as a filtration aid in drilling muds.

Abstract: The present invention is directed to a method of inhibiting corrosion and the precipitation of scale-forming salts in an aqueous system, comprising adding to the system at least 0.1 mg/l of a polymer having an intrinsic viscosity of 0.05 to 4.5 dl/g, in 1.0 M NaCl, prepared from:(A) 35 to 65%, by weight, of acrylic acid or methacrylic acid;(B) 15 to 45%, by weight, of 2-acrylamido-2-methylpropylsulfonic acid or 2-methacrylamido-2-methylpropylsulfonic acid; and(C) 15 to 25%, by weight, of 2-acrylamido-2-methylpropyl phosphonic acid or 2-methacrylamido-2-methylpropylphosphonic acid.

Abstract: The instant invention is directed to a method for suppressing dust comprising contacting a dust-producing material with an emulsion comprising: (a) 20-99.5%, by weight, water and (b) the balance a composition comprising at least one methacrylate polymer, at least one hydrophobic liquid, and at least one emulsifying surfactant. The instant invention is also directed to the above described emulsions.