Organic Coating Patents (Class 427/220)
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Patent number: 5383952Abstract: Dust is bound in fertilizer granules by spraying the granules with a solution of molasses and another oxygen-containing hydrocarbon from the group glycerin, polyethylene glycol and triethanolamine.Type: GrantFiled: March 16, 1994Date of Patent: January 24, 1995Assignee: Kali und Salz AktiengesellschaftInventors: Arno Singewald, Otto Wendt, Gunter Nurnberger, Dieter Paetz, Wolfgang Walczyk, Klaus-Dieter Muller
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Patent number: 5376172Abstract: A process for preparing silane metal oxides comprising reacting a metal oxide with an amine compound to form an amine metal oxide intermediate, and subsequently reacting said intermediate with a halosilane.Type: GrantFiled: December 23, 1992Date of Patent: December 27, 1994Assignee: Xerox CorporationInventors: Carl P. Tripp, Michael L. Hair, Richard P. N. Veregin
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Patent number: 5360633Abstract: The amount of small airborne particles of rice hull ash is minimized by treating the particles with a coating of vegetable oil and/or glyceride in and on the surface of the particles without filling the porous spaces within the rice hull ash particles.Type: GrantFiled: January 14, 1993Date of Patent: November 1, 1994Assignee: Uncle Ben's, Inc.Inventor: James Dean
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Patent number: 5358738Abstract: The surfaces of masses of wood chips are painted to pre-selected colors by conveying the chips along an elongated path in an auger-type screw conveyor and, simultaneously, spraying predetermined amounts of a liquid colorant or paint, upon the mass of moving chips. The rotating screw is arranged within a U-shaped, in cross-section, trough. The conveyor is divided into a closed paint application zone, within which the paint is sprayed upon the moving mass of chips, and a following paint spreading and paint drying zone, in which the trough is open to the atmosphere to allow air circulation and evaporation to enhance the drying process of the paint. The paint is spread upon the surfaces of the chips by the autogenous action of the tumbling chips contacting and rubbing against each other as they are conveyed along the path from the feed end of the screw to the discharge end thereof.Type: GrantFiled: March 31, 1993Date of Patent: October 25, 1994Inventor: Craig S. Sawka
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Patent number: 5356671Abstract: A process for improving the rebound properties of sprayed concrete comprises the inclusion therein of micro-silica which has been pretreated with from 2 to 25% by weight thereof of a liquid selected from water, an alkanolamine, a polyol and an aqueous solution of at least one concrete additive, an alkanolamine, a polyol and a water-soluble cellulosic compound. The process is especially effective when used in conjunction with the dry spraying process.Type: GrantFiled: March 17, 1993Date of Patent: October 18, 1994Assignee: Sandoz Ltd.Inventor: Josef F. Drs
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Patent number: 5344489Abstract: A method of making synthetic color pigments comprises synthesizing monodispersed colloidal core particles by precipitation from a solution and applying dye material to the core particles either by adsorption directly into the core particles or by adsorption or incorporation into alumina fixation shells at the surfaces of the core particles. Additional functional shells may be applied to the dyed core particles for various reasons. The pigments are useful for the coloration of various media such as printing inks and paint compositions.Type: GrantFiled: November 15, 1991Date of Patent: September 6, 1994Assignee: Manfred R. KuehnleInventors: Egon Matijevic, Wan P. Hsu, Manfred R. Kuehnle
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Patent number: 5336080Abstract: A cathode-ray tube phosphor is manufactured by coating, on the surfaces of phosphor particles, a mixture of a metal alginate containing at least one type of a metal selected from the group consisting of Zn, Al, and an alkali earth metal and at least one type of a water-soluble binder selected from the group consisting of gum arabic, gelatin, polymethacrylamide, and polyvinyl alcohol.Type: GrantFiled: December 17, 1992Date of Patent: August 9, 1994Assignee: Nichia Chemical Industries, Ltd.Inventors: Miyuki Sumitomo, Ichiro Takeoka, Shoichi Bando
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Patent number: 5336521Abstract: A process for coating particulate zirconia for use in ceramics is claimed. The particulate zirconia is coated with a hydrous oxide of a stabilizing metal such as yttrium, an alkaline earth metal or a rare earth metal by hydrolysis of a salt of the metal. An initial dispersion of the zirconia is prepared at a pH above 7.5 and, preferably, in the presence of an organic dispersing agent.The coated zirconia produced according to the process has been shown to form ceramic bodies with a higher strength than those prepared from particulate zirconia coated by prior known processes.Type: GrantFiled: November 3, 1992Date of Patent: August 9, 1994Assignee: Tioxide Group Services LimitedInventors: Graham P. Dransfield, Denis J. King
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Patent number: 5324442Abstract: A relatively low cost double salt road deicer composition is provided which includes a preponderant quantity of calcium magnesium propionate (CMP), together with smaller quantities of calcium magnesium acetate (CMA) and related salts. The product is preferably made by inoculating a sugar substrate (e.g., glucose, xylose or the hydrolysis products of biomass or starch) with facultative bacteria, followed by fermentation under anoxic conditions at moderate temperatures (30.degree.-37.degree. C.) and pH (5-7) in order to yield an organic acid mixture; the mixture is then reacted with a source of magnesium and calcium cations such as dolomite to produce mixed salts, which are then recovered as a solid road deicer. The preferred inoculum is P. acidi-propionici, and the fermentation step can be carried out batch-wise or continuously.Type: GrantFiled: June 16, 1992Date of Patent: June 28, 1994Assignee: Kansas State University Research FoundationInventor: Alexander P. Mathews
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Patent number: 5318730Abstract: A method and composition for stabilizing and isolating hazardous, radioactive or mixed waste materials of particulate and solid types, which comprises providing a non-toxic one component aqueous mixture of an acrylic polymer containing a thixotropic agent, a vinyl acetate-ethylene copolymer containing a thixotropic agent, or a vinyl chloride copolymer latex containing a thixotropic agent, and applying the mixture over surfaces of hazardous material in an amount sufficient to form a flexible impermeable coating or foam. The mixture may be applied by spraying to form a coating having a thickness of about 0.5 to about 5.0 centimeters when dry. The coated waste material may then be disposed of in conventional manner.Type: GrantFiled: March 18, 1991Date of Patent: June 7, 1994Assignee: University of CincinnatiInventors: Linda A. Rieser, John M. Christenson
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Patent number: 5310578Abstract: A process for coating the surface of pigment and filler particles with an oleaginous and cosmetically functional material, characterized in that an aqueous suspension of the pigment or filler is mixed with an emulsion of said oleaginous material to be coated onto the surface of pigment or filler particles, followed by adding a component capable of breaking the emulsion to the thus obtained mixture, whereby the emulsified material coalesces onto the surface of the pigment or filler particles. The thus obtained pigments or fillers exhibit excellent properties when used in cosmetics.Type: GrantFiled: September 17, 1990Date of Patent: May 10, 1994Assignee: Merck Patent GesellschaftInventors: Angelika Thurn-Muller, Jane Hollenberg, Ian Scott
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Patent number: 5281351Abstract: Novel processes for incorporating anti-scalant agents having acidic functionalities in zero-P or low phosphate built powder detergents to provide an automatic dishwashing detergent of improved solubility.Type: GrantFiled: December 6, 1991Date of Patent: January 25, 1994Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Joseph Romeo, Anthony A. Rapisarda, Jose A. Lopez
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Patent number: 5270076Abstract: A process for coating at least one cationically charged ketene dimer on titanium dioxide comprising grinding the titanium dioxide in acidic aqueous media in the presence of a cationically charged ketene dimer.Type: GrantFiled: April 11, 1991Date of Patent: December 14, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Glenn R. Evers
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Patent number: 5266248Abstract: A method of producing a hydroxylapatite base porous beads filler for an organism, including mixing hydroxylapatite powder having particle sizes not larger than 125 .mu.m, in an amount ranging from 40 to 90% by weight, synthetic resin powder having particle sizes not larger than 74 .mu.m, in an amount ranging from 5 to 55% by weight, and resinous binder in an amount ranging from 0.5 to 5% by weight to obtain a mixture, granulating the mixture to form beads each having a diameter ranging from 0.03 to 25 mm, firing the beads at a temperature ranging from 900.degree. C. to 1180.degree. C. to form hydroxylapatite base porous beads, dipping the porous beads in a colloidal solution, removing air from the porous beads under vacuum, and filling the colloidal solution into the pores in the porous beads under pressure.Type: GrantFiled: October 13, 1992Date of Patent: November 30, 1993Inventors: Torao Ohtsuka, Makoto Fukaya, Hideo Tagai, Takayuri Kato, Shinpei Hashimoto, Kazuhiko Sawai, Tomokazu Hattori, Shigeo Niwa
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Patent number: 5254364Abstract: A method of making a soil composition involves continuously mixing sand and plasticizer in an agitation mixer. The sand becomes coated with the plasticizer, whereupon a quantity of clay is then added, followed by an additional portion of the plasticizer. The sand particles coated with the plasticizer become coated with the clay. Coloring pigments are added and mixed thereafter. As soon as complete mixing takes place, the coated sand particles can be immediately transferred from the mixer to suitable packaging. The ingredients are added in the following proportions by weight: sand 50-70%; clay 10-40%; plasticizer 0.5-5.0%; water 5-20%; and coloring pigment 1-5%.Type: GrantFiled: March 23, 1992Date of Patent: October 19, 1993Assignee: True Pitch, Inc.Inventor: Boris Kviesitis
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Patent number: 5246781Abstract: A method of preparing a pigment-coated phosphor is provided which comprises the steps of:(a) preparing a pigment dispersion by adding pigment particles in an amount of 0.05 to 10% by weight, based on the amount of phosphor, to one of (i) a solution comprising adipic acid in the range of 0.05 to 2% by weight, based on the amount f phosphor, or (ii) a solution comprising 1,6-hexanediamine in the range of 0.05 to 2%, based on the amount of phosphor, and(b) mixing the pigment dispersion with the other of the solutions not used to form the pigment dispersion and with a phosphor dispersion comprising a phosphor dispersed in distilled water to form a pigment-coated phosphor. A pigment coated phosphor prepared according to this method is also provided.Type: GrantFiled: August 24, 1992Date of Patent: September 21, 1993Assignee: Samsung Electron Devices Co., Ltd.Inventor: Jwa-yeong Jeong
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Patent number: 5240628Abstract: A magnetic fluid is produced by adding a solution of N-polyalkylenepolyamine-substituted alkenylsuccinimide in a hydrocarbon solvent to an aqueous suspension of fine particles of ferrites, thereby adsorbing the N-polyalkylenepolyamine-substituted alkenylsuccinimide onto the fine particles of ferrites, distilling off water and the hydrocarbon solvent therefrom, and dispersing the fine particles of N-polyalkylenepolyamine-substituted alkenylsuccinimide-adsorbed magnetites as residues into a base oil of low vapor pressure having a vapor pressure of not more than 0.1 mmHg at 25.degree. C.Type: GrantFiled: December 18, 1991Date of Patent: August 31, 1993Assignee: NOK CorporationInventors: Takao Kanno, Yutaka Kouda, Yasuki Karita, Hirokazu Nagato, Takahiro Ishizuka
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Patent number: 5213894Abstract: A red pigment coated phosphor comprises a phosphor for color cathode ray tube and red pigment attached to said phosphor by an organic binder, wherein said organic binder is gellatin and casein. A process for preparation of a red pigment coated phosphor comprises the steps of: preparing three dispersions of red phosphor particles, red pigment particles and organic binder, respectively; uniformly mixing said three dispersions and agitating them sufficiently; adjusting pH of the mixture obtained; and adding a curing agent thereto, washing said mixture and then drying it. The red pigment coated phosphor of the present invention has a good dispersion and a good affinity for phosphor slurry.Type: GrantFiled: December 19, 1990Date of Patent: May 25, 1993Assignee: Samsung Electron Devices Co., Ltd.Inventor: Ung-su Kim
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Patent number: 5211993Abstract: Method of chromatographically separating a mixture by contacting said mixture under chromatographic separation conditions with a chromatographic separation stationary phase comprising a polymer formed by coating substantially all of the surfaces of a microporous, comminuted substrate material with a monomer that is subsequently polymerized in situ with a cold-gas plasma discharge.Type: GrantFiled: December 10, 1990Date of Patent: May 18, 1993Assignee: Advanced Surface Technology, Inc.Inventor: Henry S. Kolesinski
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Patent number: 5204024Abstract: A method for preventing agglomeration of powder, characterized in that a polyvinyl pyrrolidone and/or a vinyl pyrrolidone-vinyl ester copolymer is incorporated as an anti-agglomeration agent to the powder.Type: GrantFiled: May 22, 1992Date of Patent: April 20, 1993Assignee: Tosoh CorporationInventors: Tadao Onaka, Hiroshi Fukuda
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Patent number: 5194333Abstract: A packing material for reversed phase chromatography, which comprises silica gel with its entire surface substantially coated with repeating units of a polycarbosilane of the formula (I): ##STR1## wherein R.sub.1 is an octyl group, an octadecyl group or a phenyl group, R.sub.2 is a methyl group or a methylene group, and n is a positive integer.Type: GrantFiled: December 18, 1990Date of Patent: March 16, 1993Assignee: Tosoh CorporationInventors: Tadao Ohnaka, Katsuo Komiya, Hiroyuki Moriyama
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Patent number: 5194464Abstract: An enteric film is produced by spraying on a material a mixed solution of (a) hydroxypropylmethylcellulose phthalate exhibiting a viscosity of about 136 to 204 centistokes as 10% methanol/dichloromethane (1:1 by weight) solution at 20.degree. C., (b) polyethylene glycol presenting solid state at ambient temperature and (c) shellac, wherein respective ratios of (b) and (c) to (a) are 0.1 to 20 weight percent and 5 to 40 weight percent; and then drying the solution.The enteric film excels in film strength and acid resistance, and can be employed in pharmaceutical preparations.Type: GrantFiled: March 23, 1990Date of Patent: March 16, 1993Assignee: Takeda Chemical Industries, Ltd.Inventors: Shunichi Itoh, Hiroyoshi Koyama, Toshio Kashihara, Shin-ichiro Hirai
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Patent number: 5183710Abstract: A process for rendering an inorganic substrate material hydrophobic includes the step of attaching a coating of hydrophobic silica to the substrate. The hydrophobic silica is preferably mixed initially with the substrate material. At least one bonding agent selected from the group consisting of siloxanes and functionalized silanes, and preferably siloxanes, is then mixed with the hydrophobic silica and substrate material. A dispersion agent can be provided to more evenly distribute the siloxanes and/or functionalized silanes over the hydrophobic silica and substrate material. Heat can be applied after mixing to remove any liquid dispersion agent and to chemically bond the bonding agent to the hydrophobic silica and to the substrate material. Hydrophobic inorganic materials including hydrophobic silica bonded to a substrate by a siloxane or functionalized silane bonding agent.Type: GrantFiled: April 23, 1991Date of Patent: February 2, 1993Assignee: U-SUS Distributors, Inc.Inventor: Anthony J. Gerbino
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Patent number: 5176938Abstract: A process for the surface treatment of individual particles of a pulverulent material to improve the surface properties thereof. The process includes a plasma-generating apparatus for generating a plasma in a plasmagenerator while supplying an inert gas at a high drift velocity into the generator to form a low temperature plasma flame which is directed into a low pressure zone. Subsequently, the pulverulent material is injected into the high velocity inert gas or into the base of the plasma flame to disintegrate any particle aggregate present in the material. The low temperature plasma acts on the surface of each individual particle to improve the properties thereof. The treated particles can then be recovered from the zone.Type: GrantFiled: May 23, 1990Date of Patent: January 5, 1993Assignee: Plasmacarb Inc.Inventors: Hans I. Wallsten, Hirotsugu K. Yasuda
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Patent number: 5164123Abstract: A method of encapsulating a toxic material with a resinous plastic wherein the toxic material is admixed and coated with the resinous plastic to result in an encapsulated product having a protective skin thereover. The method involves an extrusion step followed by a severing of the extruded product into discrete particles for either subsequent injection or compression molding or additional extruding with additional resinous plastic. Geometric forms result which can indicate the type of toxic material as well as be of a size so as not to be ingested by animals and have imprinted warning indicia. Liquid as well as solid toxic materials can be encapsulated.Type: GrantFiled: July 8, 1988Date of Patent: November 17, 1992Assignee: Waste Seal, Inc.Inventor: Paul R. Goudy, Jr.
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Patent number: 5158805Abstract: A method for reducing the formation of nitrosamines during the vulcanization of rubber mixes which includes treating of the inorganic additives used for the rubber mix to be vulcanized--primarily carbon blacks, zinc oxide and/or silicates--with ammonia or with a primary amine.Type: GrantFiled: April 8, 1991Date of Patent: October 27, 1992Assignee: Rhein Chemie Rheinau GmbHInventors: Rudolf Preussmann, Bertold Spiegelhalder
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Patent number: 5151123Abstract: The soil composition of this invention is comprised of a mixture of sand, clay, a plasticizer material, water, and a coloring pigment, if desired. The components of the soil composition are preferably present in the following proportions by weight: sand 50-70%; clay 10-40%; plasticizer 0.5-5.0%; water 5-20%; and coloring pigment 1-5%. The method of making the invention involves continuously mixing a portion of the sand and the plasticizer in an agitation mixer. The same becomes coated with the plasticizer, whereupon a quantity of clay is then added, followed by an additional portion of the plasticizer material. It is particularly important that the sand particles become coated with the plastizing compound and clay. The coloring pigments are added and mixed thereafter. As soon as complete mixing takes place, material can be immediately transferred from the mixer to suitable packaging.Type: GrantFiled: May 10, 1990Date of Patent: September 29, 1992Assignee: True Pitch, Inc.Inventor: Boris Kviesitis
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Patent number: 5124101Abstract: A method for manufacturing a fine porous member provides that vacant space within the porous member is sufficiently finely small such that the thermal conductivity of the member is lower than that of stationary air. In the method, a fine particle powder together with an ultrafine particle powder preliminarily subjected to a surface treatment for prevention of cohesiveness and employed at least as a part of the fine particle powder, are molded into the fine porous member, whereby the vacant space between the respective particles are made finely small to a remarkable extent and the porous member is provided as highly adapted to be used as a heat insulator.Type: GrantFiled: June 20, 1990Date of Patent: June 23, 1992Assignee: Matsushita Electric Works, Ltd.Inventors: Shozo Hirao, Masaru Yokoyama, Takashi Kishimoto, Kouichi Takahama, Hiroshi Yokogawa
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Patent number: 5124289Abstract: A treated permeable inorganic membrane is disclosed comprising a permeable inorganic membrane capable of reacting with an organic acid. The treated membrane has good chemical stability over a pH range of from 1 to 14, is capable of controlling the flux through the membrane, has altered internal and external wetting properties of the membrane surface, and has controlled pore size due to the presence of a monomolecular layer of an organic acid material chemically bonded to the surface of the inorganic membrane. The monomolecular layer of organic acid material is formed on the membrane surface by contacting the membrane with an organic acid reactant selected from the class consisting of phosphonic acid having the formula RPO(OH).sub.2 ; phosphinic acid having the formula RR'PO(OH); monocarboxylic acids having the formula RCOOH; dicarboxylic acids having the formula R"(COOH).sub.2 ; boronic acid having the formula RB(OH).sub.Type: GrantFiled: October 31, 1988Date of Patent: June 23, 1992Assignee: Aluminum Company of AmericaInventors: Edward S. Martin, Larry F. Wieserman, Karl Wefers, Kathryn Cross
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Patent number: 5102592Abstract: A method of coating ceramic powders, e.g. Si.sub.3 N.sub.4, with a sintering aid and of utilizing such coated powders to form green and sintered ceramic bodies comprises treating a dispersion of the powder with a solution of a sintering aid forming compound at a pH such that the zeta potential of the ceramic powder is of opposite charge with respect to the sintering aid in solution such that the sintering aid forming material is chemisorbed as a uniform monomolecular layer on the surface of the ceramic powder.Type: GrantFiled: October 19, 1990Date of Patent: April 7, 1992Assignee: Rutgers UniversityInventors: Ronald A. McCauley, Remco de Jong
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Patent number: 5100547Abstract: Stationary phases, useful for reversed-phase liquid chromatography, comprise polybutadiene-coated inorganic substrates having enhanced hydrophobicity due to attached alkyl groups, e.g. 2-30 carbon alkyl groups such as an octadecene group, and a low level of carbon-oxygen bonding in the polymer coating, e.g. less than 1 percent of the carbon in the polymer coating is bonded to oxygen.Type: GrantFiled: March 4, 1991Date of Patent: March 31, 1992Assignee: Monsanto CompanyInventors: Christopher J. Hardiman, Jawed Asrar
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Patent number: 5096733Abstract: Cytotoxic effects associated with ground fractured silica-containing minerals and silicates, including asbestos, are prevented by coating the silica-containing minerals and silicates with an aqueous solution containing an aqueously compatible silane coupling agent so that a monomolecular film is formed on the surface of the silica-containing minerals and silicates.Type: GrantFiled: October 30, 1989Date of Patent: March 17, 1992Assignee: The United States of America as represented by the Secretary of the Dept. of Health and Human ServicesInventors: Val Vallyathan, Vincent Castranova, Nar S. Dalal, Knox Van Dyke
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Patent number: 5082810Abstract: An improved ceramic dielectric composition comprising a chemically homogeneous distribution of a mixture of additives on the surface of particles of ceramic powder, and to a method for enhancing the dielectric properties and sinterability of such compositions at low firing temperatures.Type: GrantFiled: February 28, 1990Date of Patent: January 21, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventors: Horacio E. Bergna, Salvatore A. Bruno, Ian Burn
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Patent number: 5082811Abstract: An improved ceramic dielectric composition comprising a plurality of mixed metal oxide dopants distributed homogeneously on the surface of ceramic powder particles, and a method for enhancing dielectric properties of such compositions by improving the chemical homogeneity of the particles.Type: GrantFiled: February 28, 1990Date of Patent: January 21, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventor: Salvatore A. Bruno
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Patent number: 5080928Abstract: A process is disclosed for coating phosphors with hydrolyzed alkylaluminum. The hydrolyzed alkylaluminum coating renders the phosphors insensitive to atmospheric moisture. the coating process involves vaporizing an aluminum-containing precursor such as trimethylaluminum or triethylaluminum in an inert gas stream and passing this through a fluidized bed containing the phosphor particles. Water vapor is also passed through the fluidized bed and the water and aluminum precursor react on the surface of the phosphor particles to form hydrolyzed trimethylaluminum or other alkylaluminum. The hydrolyzed trimethylaluminum or other alkylaluminum phosphors are particularly useful in electroluminescent lamps.Type: GrantFiled: October 5, 1990Date of Patent: January 14, 1992Assignee: GTE Laboratories IncorporatedInventors: Keith A. Klinedinst, Richard A. Gary, Silvia E. Lichtensteiger
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Patent number: 5079036Abstract: A stable foam having foam bubble diameters of 0.005-0.015 inches and being comprised of from about 10-30 wt. % of a brine freeze control agent selected from the group consisting of sodium chloride, calcium chloride, magnesium chloride, potassium chloride, borax, potassium thiocyanate, potassium acetate, sodium acetate, and sodium nitrite, anionic surfactant, amphoteric surfactant, and water is applied to solid, particulate materials such as coal or mineral ores to inhibit freezing and improve handleability characteristics of the particulate materials. The foam optionally may contain additional freeze control agents such as ethylene glycol or cellulose ethers.Type: GrantFiled: July 27, 1990Date of Patent: January 7, 1992Assignee: Betz Laboratories, Inc.Inventors: Donald C. Roe, David M. Polizzotti
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Patent number: 5039635Abstract: Fiber-reinforced ceramic matrix composite products are made by providing inorganic fiber reinforcement materials with pyrolytic carbon coatings, combining the carbon-coated fibers with a selected ceramic matrix material to make a composite preform, and consolidating the preform with heat and pressure to form the fiber-reinforced composite. Preferably, the peak consolidation temperature of the composite is moderated, with the retained pyrolytic carbon coating acting to preserve tough fracture behavior in the composite product notwithstanding the absence of the conventional graphitic fiber interface layer therefrom.Type: GrantFiled: February 23, 1989Date of Patent: August 13, 1991Assignee: Corning IncorporatedInventors: John L. Stempin, Dale R. Wexell
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Patent number: 5037795Abstract: A chromatographic packing material is disclosed which comprises generally spherical metal oxide/hydroxide support particles comprising crystals extending radially outward from a central core region and having a shape selected from principally acicular to principally lamellar and having bonded to the surface of said metal oxide/hydroxide support particles a layer of one or more phosphorus-containing organic materials comprised of a phosphorus-containing acid group bonded to said metal oxide/hydroxide particles and an unreacted carbon-containing acid group.Type: GrantFiled: October 31, 1988Date of Patent: August 6, 1991Assignee: Aluminum Company of AmericaInventors: Larry F. Wieserman, Karl Wefers, Kathryn Cross, Edward S. Martin
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Patent number: 5030352Abstract: Disclosed are pellicular materials useful in contact with proteins and as chromatography media. Rigid, inert, hydrophobic, polymeric materials are exposed to a solution comprising a solute defining plural interspersed hydrophobic and hydrophilic domains. The solute molecules adsorb onto the surface of the substrate by hydrophobic - hydrophobic interaction with their hydrophilic domains extending outwardly away from the surface into the solution. The molecules are then crosslinked in place to produce a solvent and pH resistant coating which presents a hydrophilic surface sufficient to mask hydrophobic regions therebeneath. The multidomain adsorbing compounds may comprise reactive groups which subsequently can be derivatized using conventional techniques to produce chromatography materials useful for conducting affinity, size exclusion, cationic exchange, anionic exchange, neutral hydrophobic interaction, and other forms of chromatographic separations.Type: GrantFiled: January 25, 1990Date of Patent: July 9, 1991Assignee: Purdue Research FoundationInventors: Laszlo Varady, Yan B. Yang, Steven E. Cook, Fred E. Regnier
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Patent number: 5013585Abstract: A method for the preparation of a stable silica organosol in a hydrophobic organic solvent is proposed. The method comprises (a) hydrolyzing a tetraalkoxy silane, e.g. tetraethoxy silane, in an alcoholic medium in the presence of a limited amount of water and ammonia as a catalyst under controlled conditions so as to produce a silica alcosol in which the silica particles satisfy the requirements that the alkoxy groups and silanolic hydroxy groups are bonded to the silicon atoms on the surface in densities of at least 3.5 .mu. moles/m.sup.2 and not exceeding 2 .mu. mmoles/m.sup.2, respectively, and the specific surface area S given in m.sup.2 /g and the average particle diameter D given in nm of the silica particles satisfy the relationship of S.times.D.gtoreq.5000, D being 1 nm or larger, and (b) admixing the alcosol of silica particles with an organosilicon compound selected from the group consisting of the compounds represented by the general formula R.sub.4-n SiX.sub.n, (R.sub.3 Si).sub.Type: GrantFiled: June 6, 1990Date of Patent: May 7, 1991Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takaaki Shimizu, Tsutomu Ogihara, Masatoshi Takita
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Patent number: 5004490Abstract: There is disclosed herein, as a new article of manufacutre, a glass substrate coated with tin oxide and a method of making the same. According to the method, in order to produce the new article of manufacture, a glass substrate with a selected surface is heated to a temperature sufficiently hot so that a heat decomposable, tin-containing material coming into the vicinity of the selected surface will be heat decomposed permitting the tin contained in the tin-containing material to be oxidized and deposited as tin oxide on the selected surface. The tin-containing material, which is applied to the heated glass surface is a coating material containing alkyltin alkoxides of the general formula RSn(OR.sup.1).sub.3 where R and R.sup.1 are organo groups containing from 1-6 carbon atoms, whereby a thicker coating film of oxidized tin is deposited on the selected surface of the glass substrate than can be deposited by previously used tin coating materials under the same application and temperature conditions.Type: GrantFiled: August 10, 1987Date of Patent: April 2, 1991Assignee: Ford Motor CompanyInventor: Franklin I. Brown
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Patent number: 4997681Abstract: A nodulizing machine for use in an apparatus for making loose fill insulation from mineral fibers comprises an input portal, a conduit containing a plurality of blades and an output portal. Apparatus for making loose fill insulation from mineral fibers comprises a duct extending from a source of the mineral fibers to the nodulizing machine of the present invention. The apparatus includes flow rate control means to control the flow rate of air and mineral fibers in the apparatus. A process for making loose fill insulation from mineral fibers in association with the apparatus of the invention is also disclosed.Type: GrantFiled: February 8, 1989Date of Patent: March 5, 1991Assignee: Fiberglas Canada Inc.Inventors: Mark B. Dockrill, John Buckham, Anthony P. Shen
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Patent number: 4997862Abstract: Preparing a composition by mixing colloidal particles selected from the group consisting of silica, tin oxide and antimony pentoxide with a polyester resin in an aqueous medium with proper neutralization to substantially encapsulate the particles in the resin. The solids ratio of particles to resin is in the range of approximately 1 to 7-10. The resulting product with encapsulated particles can be used as a textile sizing in the case of silica, or as a catalyst as in the case of tin oxide and antimony pentoxide.Type: GrantFiled: February 29, 1988Date of Patent: March 5, 1991Inventor: John C. Lark
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Patent number: 4994429Abstract: An active material is disclosed which comprises a metal oxide/hydroxide surface having chemically bonded to reactive sites thereon a substantially monomolecular layer of organic acid molecules. Each organic acid molecule is chemically bonded to a reactive site on the oxide/hydroxide surface through a phosphorus-containing acid group selected from the group consisting of a phosphonic acid group and a phosphinic acid group. Each organic acid molecule also comprises an unreacted acid group oriented away from the metal oxide/hydroxide surface and selected from the class consisting of a phosphonic acid group, a phosphinic acid group, a sulfonic acid group, and a carboxylic acid group.Type: GrantFiled: October 31, 1988Date of Patent: February 19, 1991Assignee: Aluminum Company of AmericaInventors: Larry F. Wieserman, Karl Wefers, Kathryn Cross, Edward S. Martin
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Patent number: 4983566Abstract: An active material and method of making same are disclosed comprising a metal oxide/hydroxide surface having chemically bonded to reactive sites thereon, a layer of a perfluorinated organic material formed by reacting with the metal oxide/hydroxide a perfluorinated organic acid comprised of an acid group and a perfluorinated carbon-containing group. The bond to the metal oxide/hydroxide surface is formed by reaction of the acid group with the metal oxide/hydroxide surface, so that the perfluorinated carbon-containing group is oriented away from the metal oxide/hydroxide surface. The perfluorinated organic acid may be a perfluorinated phosphonic acid, a perfluorinated phosphinic acid, a perfluorinated carboxylic acid, or a mixture of two or more of the acids.Type: GrantFiled: October 31, 1988Date of Patent: January 8, 1991Assignee: Aluminum Company of AmericaInventors: Larry F. Wieserman, Karl Wefers, Kathryn Cross, Edward S. Martin
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Patent number: 4983564Abstract: The instant invention relates to a method for converting phosphorus containing polymers from a two dimensional layered structure into a three dimensional structure by crosslinking such layers. The method and the resulting crosslinked polymers may be used to encapsulate active materials such as catalysts, pesticides, etc. by intercalating such active materials between the layers prior to crosslinking. Thus, the egress of said active materials into the environment during use may be hindered or prevented.Type: GrantFiled: July 14, 1986Date of Patent: January 8, 1991Assignee: Occidental Research CorporationInventors: Kenneth P. Callahan, Martin B. Dines, deceased
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Patent number: 4983420Abstract: A filament for an indirectly heated cathode is coated with a tungsten-aluminium oxide suspension, the tungsten particles being stabilized by a chemisorbed monomolecular layer of an aliphatic monocarboxylic acid such as stearic acid.Type: GrantFiled: September 20, 1989Date of Patent: January 8, 1991Assignee: U.S. Philips CorporationInventors: Stefan M. Wolfrum, Johannes J. Ponjee, Angela C. L. Van de Poel
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Patent number: 4971762Abstract: The invention relates to a detector device for determining components of a sample such as a gaseous sample. The determination is made with reagents which are present in two component quantities separate from each other in the storage condition of the detector device. The component quantities are brought into contact with each other to establish the use condition of the detector device. A simple production and reliable operation of such detector devices is obtained if at least one of the component quantities is contained in a plurality of particles during the storage condition with each particle having a reagent-containing core and an encapsulation surrounding the core. The encapsulation is made of a material which is solid at normal temperature and melts at a higher temperature which is unharmful to the remaining components of the detector device. The detector device is transferred from the storage condition to the use condition by removing the encapsulation by heating.Type: GrantFiled: September 1, 1988Date of Patent: November 20, 1990Assignee: Dragerwerk AktiengesellschaftInventor: Wolfgang Bather
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Patent number: 4940611Abstract: A hardened, environmentally inert and disposable composite granule of coal cleaning refuse and coal combustion waste, and method for producing the same, wherein the coal combustion waste is first granulated. The coal cleaning refuse is pulverized into fine particles and is then bound, as an outer layer, to the granulated coal combustion waste granules. This combination is then combusted and sintered. After cooling, the combination results in hardened, environmentally inert and disposable composite granules having cores of coal combustion waste, and outer shells of coal cleaning refuse. The composite particles are durable and extremely resistant to environmental and chemical forces.Type: GrantFiled: December 20, 1988Date of Patent: July 10, 1990Assignee: Iowa State University Research Foundation, Inc.Inventors: George Burnet, Ashok J. Gokhale
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Patent number: 4929589Abstract: An active material is disclosed comprising metal oxide/hydroxide particles having chemically bonded to reactive sites on a surface thereof, a monolayer of a phosphorous-containing organic material comprised of a phosphorous-containing group and a carbon-containing group. The bond to the metal oxide/hydroxide particle surface is formed by reaction of the phosphorous-containing group with the metal oxide/hydroxide particle surface, so that the carbon-containing group of the material is oriented away from the metal oxide/hydroxide surface.Type: GrantFiled: June 2, 1989Date of Patent: May 29, 1990Assignee: Aluminum Company of AmericaInventors: Edward S. Martin, Larry F. Wieserman