Abstract: An all-in-one treatment composition for a water cooling tower includes a water soluble aromatic azole corrosion inhibitor such as benzotriazole, an organophosphorous antiscalant and a polymeric quaternary ammonium compound. The polymeric quaternary ammonium compound has the following general formula: ##STR1## The composition is suitable for use at low level continuous applications rates. The polymeric quaternary ammonium compound is also suitable for use at low concentration as a continuous biocide/biostat. This compound does not suffer from the acclimatization typically encountered when one biocide is used on a continuous low level basis.
Abstract: A detergent composition containing a stabilized active halogen source is disclosed. An active halogen source, such as a hypochlorite, in aqueous solution, is stabilized by combining it with known anhydrous or partially anhydrous builders, as well as fillers, defoamers, polyelectrolytes, and hydroxides to form a solid detergent composition. The aqueous solution of the active halogen source is first combined with at least one sulfonamide. The destaining activity of the halogen remains effective even after a prolonged storage period.
Abstract: A composition for deodorizing and rejuvenating used metal working fluids comprising a compound which releases active oxygen, a compound which acts as an alkaline buffering agent and compound which provides an extreme pressure additive. Combinations of sodium perborate and sodium percarbonate are preferred. Additional sequestrants, buffering agents and extenders can also be employed.
Abstract: A liquid conductivity cell utilizing the Kelvin four-electrode system, and a circuit to operate an alarm when the operating electrodes have reached a predetermined state of fouling. Thus, the invention cell self alarms when the electrodes have fouled. The electrodes each have two flow passageways, whereby the liquid takes a "U" shaped path, and whereby the outer electrode closest to the liquid inlet and outlet fittings sinks all stray currents and the like to thereby permit interference free operation.
Abstract: A cell for measuring the conductivity of liquids flowing through the cell utilizing the Kelvin four-electrode system, plus a guard electrode, and a circuit to operate an alarm when the operating electrodes have reached a predetermined state of fouling. Thus, the invention cell self alarms when it has been fouled to the point where operating results will thereafter be impaired.
Abstract: An aqueous composition which produces a clear, protective coating on a wide variety of surfaces, consisting essentially of a suspension of vinylidene polymers, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, a halogenated polysilane surfactant, sodium benzoate rust proofer, defoamer (mineral oil in ethylene glycol monobutyl ether), and water. A cleaning and priming composition is also provided, for removal of graffiti and the protective coating. The latter comprises preferably ethylene glycol monoethyl ether, methylene chloride, nonylphenol ethoxylate, triethanolamine, and water.
Abstract: This invention relates to an improved composition for inhibiting deposition of scale in aqueous systems. More specifically, it relates to the use of small quantities of an improved composition for preventing formation of scale and sludge deposits in steam generating boilers. The composition is characterized by the fact that by using a plurality of selected ingredients a synergistic effect is obtained. The ingredients comprise a copolymer of styrene sulfonic acid and maleic anhydride or maleic acid, along with a water soluble organophosphonic acid compound.
Abstract: A method for boiler water treatment to retard corrosion due to dissolved oxygen. Hydroquinone and certain related compounds are highly effective oxygen scavengers for use in boiler water and thereby effect reduction of corrosion resulting from dissolved oxygen.
Abstract: To a coal-fired furnace that uses electrostatic precipitation or a mechanical collector to collect fly ash, a mix of magnesia-alumina or magnesia-talc is added above the fireball (2600.degree.-3300.degree. F.). The additive increases the mean particle size of the fly ash and reduces its surface resistivity, thereby causing improved collection in the electrostatic precipitators or mechanical collector. Fine particulates containing heavy metals tend to be agglomerated; thus the invention permits recovery of substantial amounts of heavy metal contaminants that would otherwise be lost as stack emission.
December 26, 1979
Date of Patent:
March 17, 1981
Shyam N. S. Dixit, Douglas I. Bain, David A. Carter
Abstract: This invention relates to an improved method for inhibiting deposition of scale in aqueous systems. More specifically, it relates to the use of small quantities of an improved composition for preventing formation of scale and sludge deposits in steam generating boilers. The composition is characterized by the fact that by using a plurality of selected ingredients a synergistic effect is obtained. The ingredients comprise a copolymer of styrene sulfonic acid and maleic anhydride or maleic acid, along with a water soluble organophosphonic acid compound.
Abstract: A paste type scouring cleanser containing colloidal magnesium aluminum silicate, alkali, optionally a bleach, zeolite, optionally an abrasive, a surfactant, and optionally sodium hexametaphosphate, all in aqueous dispersion.
Abstract: An additive, e. g., MgO.Mg silicate, is injected into the flue gas stream of a coal-or oil-fired furnace, at 2300-1700 deg. F., thereby reducing accumulation of sulfuric acid on the air heater inlet and outlet.
December 22, 1978
Date of Patent:
January 20, 1981
Shyam N. S. Dixit, Douglas I. Bain, David A. Carter
Abstract: Liquid additive for caustic soda cleaning solutions. Provides surfactants, foam control, and scale control; and good wetting and emulsifying properties for improved cleaning and ease of rinsing.
Abstract: Liquid cleaning and bleaching concentrate which generates copious foam on dilution with water in a mechanical foam generator. Contains modified polyacrylic acid salt, sodium tripolyphosphate, sodium hydroxide, sodium silicate, sodium hypochlorite sodium alkane sulfonate, and (optionally) sodium polyacrylate.
Abstract: A novel hydrocarbon containing cleaning composition is used in conjunction with conventional laundry detergents to remove dirt and/or oily deposits from fabrics not ordinarily removable by conventional laundry processes.
Abstract: A quick release for the back rest (Fowler) of hospital stretchers. The conventional threaded crank actuator carries a mating threaded block and a sliding block, the sliding block being connected to the head rest. Manually operated hook means permits disengagement between the blocks to free the back rest. Inadvertent disengagement preventing safety means, and re-engagement means are also provided.
Abstract: Heavy duty built laundry washing product in slurry form containing alkali metal hydroxide, detergents, sodium polyacrylate, a modified polyacrylic acid salt, and water insoluble aluminosilicate ion exchange material and/or complex phosphates; also optionally optical brightener, coloring agent, carboxymethyl cellulose and salts thereof, and perfume.