Abstract: A method for inhibiting silica scale formation in an aqueous system by adding a hydrophobically-modified alkylene oxide urethane copolymer anti-scalant to the water used in the aqueous system.

Abstract: A method for inhibiting silica scale formation in an aqueous system by adding an amine-terminated polyoxyalkylene anti-scalant to the water used in the aqueous system.

Abstract: A method for inhibiting silica scale formation in an aqueous system by adding an amine-terminated polyoxyalkylene anti-scalant to the water used in the aqueous system.

Abstract: A method for inhibiting silica scale formation in an aqueous system by adding a hydrophobically-modified alkylene oxide urethane copolymer anti-scalant to the water used in the aqueous system.

Abstract: A process is provided for making a calcium carbonate slurry comprising the steps of (a) forming a mixture comprising water, an acidic dispersant system, and calcium carbonate, (b) grinding said mixture to form a preliminary slurry of particles of said calcium carbonate, wherein 50% or more by weight of said calcium carbonate in said preliminary slurry, based on the total weight of said calcium carbonate in said preliminary slurry, is in the form of particles having diameter of 2 micrometers or less, and wherein the pH of said preliminary slurry is 9.0 or below, and (c) after step (b), adding one or more organic neutralizing agent to bring the pH of said preliminary slurry to 9.4 or above.

Abstract: A process is provided for making a calcium carbonate slurry comprising the steps of (a) forming a mixture comprising water, an acidic dispersant system, and calcium carbonate, (b) grinding said mixture to form a preliminary slurry of particles of said calcium carbonate, wherein 50% or more by weight of said calcium carbonate in said preliminary slurry, based on the total weight of said calcium carbonate in said preliminary slurry, is in the form of particles having diameter of 2 micrometers or less, and wherein the pH of said preliminary slurry is 9.0 or below, and (c) after step (b), adding one or more organic neutralizing agent to bring the pH of said preliminary slurry to 9.4 or above.

Abstract: The present invention relates to a dispersion of particulate solid in a medium containing water and at least one dispersing agent. In particular, the dispersing agent comprises a water soluble polymer wherein X is H, Na, K, Ca, Mg, NH4+ or A; and A is a polymer, copolymer or water soluble salt thereof, comprising one or more of the following monomers in polymerised form: wherein R1 is H, OH, C1 to C9 alkyl or alkoxy or acetoxy or acetate R2 is H, C1 to C3 alkyl or alkxy, COOR3 R3 is H, Na, K, or C1 to C10 alkyl; hydroxylpropyl acrylate, propyl methacrylate, 2-acrylamido-2-propane sulphonic acid, sodium styrene sulphonate, sodium allylsulphonate, sodium methyl sulphonate, vinyl sulphonic acid, and salts thereof; acrylamide, methacrylamide, tert-butylacrylamide, (meth)acrylonitrile, styrene, vinyl acetate allyloxy-2-hydroxypropyl sulphonate and dialkylacrylamide; and further wherein A contains at least 10 monomers in polymerised form.

Abstract: Pharmaceutical tablet which consists of:a) a first layer having the property of swelling considerably and quickly on contact with aqueous biological fluids, the first layer being produced by compression of a mixture or of a granulate comprising hydrophilic polymers, andb) a second layer adjacent to the first layer being formulated with hydrophilic polymers and with other auxiliary substances in order to give the preparation suitable properties of compressibility and in order to allow the release of alfuzosin hydrochloride within a predetermined time period.

Abstract: A cooling plate for a blast furnace is provided including a C-shaped body having two arms which define two continuous horizontal lips being separated by a space, a plurality of inner tubes for carrying a circulating cooling fluid, and a lining element of refractory material disposed in the space.

Abstract: A rotary reciprocal tool for attachment to a remotely controlled support arm includes a casing attached to the arm and enclosing a fluid pressure motor. The casing also provides a chamber into which pressure fluid is supplied for activating the motor. The tool further includes a working surface in generally arcuate configuration provided with a plurality of working protuberances to engage the surface to be treated and within the working portion of the tool a vibration generator is disposed to impact both reciprocal and rotary movement to the working portion. A damper element is positioned between the casing and the rotating reciprocal tool actuator to reduce the transmission of vibration from the working portion of the tool to the casing.