Abstract: A chemical delivery and on-site blending system for producing multiple products is provided. Generally, chemical subcomponents are fed to a chemical blending system for making a multitude of products at the facility where the products are to be used. Also, a water line is connected to the system for blending with the subcomponents and for rinsing the system equipment. A microprocessor controls a series of inlet valves, a feed pump, and a mixer for formulating the products in a mixing tank. A flow meter monitored by the microprocessor measures the amounts of ingredients entering the tank. Once formulated, a product is discharged from the tank by a discharge pump also controlled by the microprocessor. Included with the system is a timed rinse cycle which rinses the tank after the product has been discharged.

Abstract: An alkylbenzotriazole, in combination with mercaptobenzotriazole, tolyltriazole, benzotriazole and/or 1-phenyl-5-mercaptotetrazole, is used to inhibit the corrosion of metallic surfaces, particularly copper surfaces, in contact with an aqueous system. Systems and compositions are also claimed.

Abstract: Synergistic antimicrobial combinations comprising N-decyl-N-isononyl-N,N-dimethyl ammonium chloride and 2-(decylthio)ethanamine, or an acid salt therof, are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.

Abstract: Synergistic antimicrobial combinations comprising N-?(dichlorofluoromethyl)thio!-N',N'-dimethyl-N-phenylsulfamide and an alkylguanidine compound, preferably dodecylguanidine hydrochloride, are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.

Abstract: Synergistic antimicrobial combinations comprising N-decyl-N-isononyl-N,N-dimethyl ammonium chloride and an alkylguanidine compound, preferably dodecylguanidine hydrochloride, are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.

Abstract: Synergistic antimicrobial combinations comprising N-decyl-N-isononyl-N,N-dimethyl ammonium chloride and 2-bromo-2-nitropropane-1,3,-diol, are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.

Abstract: A composition comprising aqueous cellulosic furnish, a high molecular weight cationic polymer, and a modified lignin wherein the ratio of the cationic polymer to the modified lignin is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.

Abstract: Synergistic antimicrobial combinations comprising 1,2-dibromo-2,4-dicyanobutane and at least one ester of parahydroxybenzoic acid are disclosed. Methods for using these synergistic combinations to inhibit microbial growth are also disclosed.

Abstract: A method for reducing turbidity in laundry waste water comprising the steps of treating said water with effective amounts of a first polymer comprised of dimethyl dialkyl ammonium chloride (DMDAAC) and dialkyl diallyl ammonium monomers (DADAAX) other than DMDAAC having alkyl groups with from 8 to 18 carbon atoms and counterions with an ionization constant greater than 10.sup.-8, and a second cationic, nonionic or anionic acrylamide polymer is disclosed.

Abstract: The use of falling-film evaporation and a concentration means such as centrifugal separation to dehydrate and concentrate a water-in-oil polymer emulsion or suspension is disclosed. In a preferred embodiment, a water-in-oil polymer composition containing less than about 25% active polymer solids is dehydrated in falling-film evaporator to produce an evaporator concentrate containing less than about 5.0% water. The evaporator concentrate then flows to a separation device such as a centrifuge, wherein oil is removed to produce a composition that is substantially a polymer and emulsifying surfactant-in-oil composition containing in excess of about 60 weight % polymer solids. The centrifuge raffinate may optionally be treated in a second separation means to capture additional polymer solids, with optional recycle of the oil-rich raffinate. The concentrated polymer composition is preferably stabilized with a steric stabilizer to produce a free flowing liquid product.

Abstract: Aminomethylene phosphonates, which give excellent inhibition of the formation, deposition and adherence of scale-forming salts, especially calcium carbonate, in aqueous systems, are degraded by the oxidizing biocides bromine and chlorine used to control microbial growth in such aqueous systems. It has been found that organic sulfonamides provide excellent protection against such degradation when they are added to the aqueous system along with the aminomethylene phosphonate scale inhibitors.

Abstract: A method for controlling, inhibiting the deposition of and/or for removing stickies from the surfaces of pulping and papermaking machinery in secondary fiber operations by adding an effective amount of a melamine formaldehyde-type polymer to a pulp slurry or furnish containing secondary fiber that is in contact with said machinery. Improved paper end products resulting from this method are also disclosed.

Abstract: A method for treating a waste system containing an oil phase dispersed on a water phase is disclosed that includes adding a polysalt having an anionic polymer component and a cationic polymer component wherein the weight ratio of the anionic polymer component to the cationic polymer component ranges from about 5:95 to 40:60, on an active basis.

Abstract: A method for clarifying phosphoric acid by flocculation or coagulation of solids wherein an effective amount of a carboxylic-type polymer having a portion of sulfonic functionality is used as the clarification aid. Preferred polymers are high molecular weight acrylic acid/acrylamido methylpropyl sulfonic acid-type polymers.

Abstract: A method for improving the dispersibility of over-sprayed, solvent-based paints in aqueous systems which comprises adding an effective amount of a chelating agent to an aqueous system containing solvent-based paints, particularly in high-hardness waters.

Abstract: A method for inhibiting the deposition of pitch on and/or for removing pitch from the surfaces of pulping and papermaking machinery by adding an effective amount of a melamine formaldehyde-type polymer to a pulp slurry or furnish in contact with said machinery.

Abstract: Method for controlling fouling in high efficiency cooling tower fill using low molecular weight 2-acrylamido-2-methylpropyl sulfonic acid/acrylic acid-type polymers.

Abstract: A method for increasing the porosity of fly ash comprising adding an effective amount of a polymer/nitrate composition to fly ash produced from the combustion of fuels such as coal.

Abstract: Methods of treating circulating water containing oversprayed, water-borne paint, such as in a paint spray booth operation, with aluminum salts such as aluminum chloride or polyaluminum chloride and a flocculant, resulting in removal of sludge from the paint spray booth water.

Abstract: A system for monitoring and/or controlling a liquid/solid separation process is described. The system utilizes photodetectors to view the surface of the composition being dewatered, and correlates the corresponding signals from the photodetectors to dryness values.