Patents Examined by Tae Yoon
  • Patent number: 5837766
    Abstract: The present invention relates to an electrodepositable conductive coating composition which contains at least one cationic acrylic polymer, a crosslinking agent and conductive carbon black having an average particle size of about 20 nm or less, a surface area (BET) of about 240-300 m.sup.2 /g and an oil absorption (DBP) of about 100 to 150 ml/100 g. After curing, the conductive coating can be electrocoated with an electrodepositable topcoat having a defect-free appearance and a high degree of gloss.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: November 17, 1998
    Assignee: The Sherwin-Williams Company
    Inventors: James N. Metro, Ronald Mattiuz
  • Patent number: 5834551
    Abstract: The present invention provides a composite of a thermosetting resin with a metallic oxide, prepared by a process which comprises subjecting a metal alkoxide containing a silicon alkoxide and/or a low condensate thereof to hydrolysis and polycondensation in a solution of a phenolic resin and/or thermosetting resin containing a phenolic resin while effecting the removal of the solvents and/or curing reaction of the resins to incorporate a particulate metallic oxide having an average particle diameter of from 0.01 to 5 .mu.m homogeneously in said thermosetting resin with a good interfacial wettability without causing macroscopic phase separation. Thus, the present invention can provide a cured or uncured composite of a thermosetting resin with a metallic oxide which can be used as a molding material, sliding material, friction material, coating material, film-forming material, etc.
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: November 10, 1998
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kazutoshi Haraguchi, Yusho Usami
  • Patent number: 5830956
    Abstract: The present invention relates to biodegradable polymers built-up ofa) monoethylenically unsaturated dicarboxylic acids and/or the salts thereof,b) monoethylenically unsaturated monocarboxylic acids and/or the salts thereof,c) monounsaturated monomers which, after hydrolysis, can be converted to monomers with a hydroxyl group covalently bonded to the C-C-chain, and, optionally,d) further radically copolymerizable monomers,with the sum of the monomers according to a) to d) amounting to 100%.The present invention further relates to a process of producing said polymers by radical polymerization and hydrolysis in aqueous medium, and to the use of said polymers as additive or cobuilder in detergents and cleaning agents, in the pretreatment of cotton, as bleaching stabilizers, as auxiliary agent in textile printing and in the manufacture of leather, as well as in the inhibition of water hardness and as dispersing agent.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: November 3, 1998
    Assignee: Chemische Fabrik Stockhausen GmbH
    Inventors: Dolf Stockhausen, Frank Krause, Helmut Klimmek
  • Patent number: 5827906
    Abstract: A filler composition for thermoplastic olefins or thermoplastic elastomers which comprises a halogen-free, flame-inhibiting filler which has been surface-treated with fatty acid derivatives and optionally a siloxane derivative.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: October 27, 1998
    Assignee: Martinswerk GmbH Fur Chemische und Metallurgische Produktion
    Inventors: Heinz-Dieter Metzemacher, Rainer Seeling
  • Patent number: 5827930
    Abstract: A curable coating composition is described comprising(A) a carbamate- or urea-functional compound that is the reaction product of(1) a compound comprising a carbamate or urea group or a group that can be converted to carbamate or urea, and a hydroxyl functional group that is the reaction product of(a) a compound comprising a carbamate or urea group or a group that can be converted to a carbamate or urea group, and an active hydrogen group that is reactive with a lactone or a hydroxy carboxylic acid, and(b) a lactone or hydroxy carboxylic acid, and(2) a component that is reactive with compound (A)(1) to convert a hydroxyl group on compound (A)(1) to a carbamate group, or a component comprising a group that is reactive with a hydroxyl group on compound (A)(1) and a carbamate or urea group or group that can be converted to carbamate or urea,(B) a compound comprising a plurality of groups that are reactive with carbamate or urea.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: October 27, 1998
    Assignee: BASF Corporation
    Inventors: Walter H. Ohrbom, Brian D. Bammel, John D. McGee, Todd A. Seaver, Gregory G. Menovcik, Paul J. Harris, John W. Rehfuss
  • Patent number: 5827403
    Abstract: A method of manufacturing a delayed coker drum as used in a refining process to receive coke feedstock as a hot liquid and in which the coke feedstock is cooled and quenched to produce solid coke, the hot liquid causing the drum to initially expand circumferentially and laterally and upon quenching to shrink due to thermal contraction, the circumferential shrinking serving to crush solidified coke and the lateral shrinking causing interface frictional contact between the solidified coke and the vessel sidewall that must be overcome, inducing high level stresses in the drum, including the steps of selecting a plurality of metal plates configured for assembling the drum, and welding the plates together creating welded seams and in which the metal plates are selected to have metallurgical characteristics and thicknesses such that their elastic limits exceed the stress introduced in the plates during the quenching process and employing welding materials and techniques such that the elastic limits of the welded se
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: October 27, 1998
    Assignee: Citgo Petroleum Corporation
    Inventors: Richard S. Boswell, Thomas D. Farraro
  • Patent number: 5824443
    Abstract: A method of manufacturing solvent-soluble charge transporting materials capable of imparting charge-tranporting properties to polysiloxane resins. These materials have the formula A-?R.sup.1 SiR.sup.2.sub.3-n Q.sub.n !.sub.p where A is a tertiary amine and organic group derived from a compound having charge transporting properties with an ionization potential of 4.5-6.2 eV; R.sup.1 is an alkylene group of 1-18 carbon atoms; R.sup.2 is a monovalent hydrocarbon group or a monovalent halogen-substituted hydrocarbon group of 1-15 carbon atoms; Q is a hydrolyzable group such as--OR.sup.3 where R.sup.3 is an alkyl group of 1-6 carbon atoms; n and p are each 1-3. This silicon-type charge transporting material is characterized by aromatic groups, and alkoxysilyl groups bonded via hydrocarbon groups onto the aromatic rings.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: October 20, 1998
    Assignee: Dow Corning Asia, Ltd.
    Inventors: Nobuo Kushibiki, Kikuko Takeuchi
  • Patent number: 5812300
    Abstract: Dispersions of electrically conductive particles useful for preparing electrically conductive, essentially ionically isolative composite layers having electrically conductive particles dispersed in a polymer matrix. Composite layers can be used in laminates for electrochromic displays where an ionically conductive layer is in contact with electrochromic material. Such displays comprise means for applying an electrical potential across the interface of the ionically conductive layer and the electrochromic material to generate an electrochromic effect at the interface. Electrochromic materials can be provided in the laminates as layers between the ionically conductive layer and the composite layer of electrically conductive particles dispersed in a polymer matrix. Alternatively, the electrochromic material can be incorporated in the conductive particles in the polymer matrix, e.g. as titanium dioxide coated with antimony tin oxide coated with polyaniline dispersed in an light transmitting polymer matrix.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: September 22, 1998
    Assignee: Monsanto Company
    Inventor: James P. Coleman
  • Patent number: 5811485
    Abstract: The present invention relates to an adhesive kit comprising two packs and a method of manufacture of an adhesive composition therefrom. The kit comprises, in a first pack a water-continuous polymer emulsion and in a second pack a non-alkali activated inverse emulsion of a high molecular weight water soluble synthetic polymer. The method of manufacture of the adhesive requires mixing for short periods with hand stirring. The adhesive composition formed is particularly, but not exclusively useful as an adhesive for hanging wallpaper.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: September 22, 1998
    Assignee: Polycell Products Ltd.
    Inventors: Ronald Scott Charnock, Derrick Frederick Deamer, James Duncan Holloway
  • Patent number: 5807966
    Abstract: An increase in the molecular weight of virgin polycondensates and polycondensate recyclates can be achieved by heating to above the melting point or glass transition temperature and by the addition of diphosphonite.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: September 15, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Rudolf Pfaendner, Heinz Herbst, Kurt Hoffmann
  • Patent number: 5803937
    Abstract: A process and system for cooling a dust-laden raw or untreated gas from the gasification of a solid carbon-containing fuel in a pressurized reactor. The gas from the reactor is introduced into a quench pipe that has a cross-sectional area that is smaller than the cross-sectional area of the reactor, and to which is supplied a quenching medium for direct cooling. The gas emerging from the outlet end of the quench pipe is deflected essentially by 180.degree. and, counter to the flow of the gas in the quench pipe, is guided through a cooling section that surrounds the quench pipe and is incorporated in a water-steam circuit.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: September 8, 1998
    Assignee: L. & C. Steinmuller GmbH
    Inventors: Ralf-Uwe Hartermann, Arno Hendricks, Leszek Gawlowski, Hubert Scheid
  • Patent number: 5804626
    Abstract: This invention relates to a polyester composition comprising:(A) 95 to 99.90% by weight of a polyester comprising from about 85 to 10.0 mole % of 2,6-naphthalenedicarboxylic acid and 85 to 100 mole % of at least one aliphatic glycol having from 2 to 16 carbon atoms, based on the total mole percentage for the glycol portion and for the acid portion of said polyester each equalling 100 mole %, and(B) 0.1 to 5.0% by weight of one or more polymeric carbodiimides.These polyester compositions result in improved hydrolytic stability in end products such as fiber, monofilament, films, thermoformed articles, containers and sheeting based on naphthalen.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: September 8, 1998
    Inventors: Martin Emerson Rogers, Sarah Jayne Webb
  • Patent number: 5804634
    Abstract: Disclosed herein is a liquid crystalline resin compound which includes about 100 pbw of liquid crystalline resin and about 5-200 pbw of inorganic filler, the liquid crystalline resin being composed of about 99.5-50 wt % of partially aromatic liquid crystalline polyester resin and about 0.5-50 wt % of wholly aromatic liquid crystalline polyester resin, and the inorganic filler having an average aspect ratio in the range of 3 to 25. Also disclosed is a molded article of liquid crystalline resin obtained by molding from the liquid crystalline resin compound. The resin compound is superior in flowability and the molded article has good mechanical properties, especially balanced rigidity and toughness.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: September 8, 1998
    Assignee: Toray Industries, Inc.
    Inventors: Hideyuki Umetsu, Kiyokazu Nakamura, Toshihide Inoue, Miki Sakai, Toshio Kurematsu
  • Patent number: 5800798
    Abstract: A process of producing a fuel gas for fuel cells, which comprises the steps of: a) treating kerosine having a sulfur content not higher than 5 ppm with a desulfurizing agent to reduce the sulfur content of said treated kerosine to 0.2 ppm or less and b) contacting said treated kerosine from step a) with a steam reforming catalyst to provide a fuel gas mainly composed of hydrogen, said desulfurizing agent in step a) comprising a copper-nickel alloy having a copper to nickel ratio by weight of 80:20 to 20:80 and at least one carrier selected from the group consisting of Al.sub.2 O.sub.3, ZnO and MgO, and the total content of copper and nickel in terms of metals in said desulfurizing agent being in the range of 40 to 70% by weight.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: September 1, 1998
    Assignees: Nippon Oil Co., Ltd, Petroleum Energy Center
    Inventors: Takashi Ino, Tadashi Seike
  • Patent number: 5801224
    Abstract: A bulk extrusion polymerization process to derive an aliphatic polyester from a suitable ester monomer, preferably .epsilon.-caprolactone. Novel reaction formulations containing less than 100 ppm water and having an acid value less than 0.5 mg KOH/g and preferably less than 0.2 mg KOH/g enable the polymerization of bulk monomer in an extruder in a resident time of less than 2 minutes. Different catalyst and initiator systems, processing protocols, and screw configurations lead to the preferred manufacture of poly(.epsilon.-caprolactone) polymer of number average molecular weight, M.sub.n, greater than 100,000. A novel poly(.epsilon.-caprolactone) intermediate optionally grafted to starch, is described which has significantly different processing and use characteristics as compared to a straight-chain polycaprolactone.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: September 1, 1998
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Ramani Narayan, Mohan Krishnan, Joseph B. Snook, Ajay Gupta, Philippe DuBois
  • Patent number: 5795445
    Abstract: A method of controlling the rate of quench of coke in a coke drum to reduce deterioration of the coke drum sidewall in which water is admitted into the coke drum filled with hot coke to cool the coke includes the steps of determining the stress imposed on the coke drum sidewall by means of at least one strain gauge affixed to the sidewall and controlling the rate of admission of water into the coke drum in response to the determined stress so that the rate of water admission keeps the stress below a preselected maximum level.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: August 18, 1998
    Assignee: Citgo Petroleum Corporation
    Inventors: Richard S. Boswell, Thomas D. Farraro
  • Patent number: 5792313
    Abstract: In the evaporation of process wastewater comprising a mixture of different types of wastewater, problems arise due to the formation of reaction products, so-called incrustations, which are difficult to separate. These incrustations clog up the evaporator, thus necessitating frequent stoppages for chemical and mechanical cleaning of the evaporator. The invention concerns an improved method for concentrating process wastewater by evaporation. In this method, one acid process flow and one alkaline process flow are evaporated alternately in one and the same evaporator. With this method, precipitates that are difficult to separate are dissolved in the evaporator during the respective evaporations. As a result, stoppages motivated by the need to clean the evaporator may be avoided to the utmost possible extent, while less and cheaper processing equipment is required.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: August 11, 1998
    Assignee: Eka Nobel AB
    Inventor: Hans Johansson
  • Patent number: 5792366
    Abstract: Aqueous dispersions of cationic water-soluble polymers are provided, as well as processes for making and methods of using the same.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: August 11, 1998
    Assignee: Cytec Technology Corp.
    Inventor: Michael W. Coville
  • Patent number: 5792809
    Abstract: Disclosed herein is a polyvinyl alcohol shaped article which comprises a polyvinyl alcohol (A) and rubber particles (B), said rubber particles (B) comprising a rubber component having a glass transition temperature of 5.degree. C. or less and an average particle diameter of 5 .mu.m or less and a polyvinyl alcohol (C) being bonded to the surface of said rubber component, with the weight ratio of said rubber component on the basis of the total weight of said polyvinyl alcohols being in the range of 0.03 to 2. The polyvinyl alcohol shaped article of the present invention has a high impact strength at low temperatures and in low humidity, and also has a high strength and Young's modulus in high humidity, and has an excellent appearance.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: August 11, 1998
    Assignee: Kuraray Co., Ltd.
    Inventors: Masahiro Nagao, Masato Nakamae, Takeshi Kusudou, Hirotoshi Miyazaki
  • Patent number: 5789507
    Abstract: A method for preparing water-absorbent resins (D) by radically polymerizing a water soluble monomer (A), or a water-soluble monomer (A) and a polysaccharide (B) in the presence of a crosslinking agent (C) and water, wherein the polymerization is conducted under the existence of a thiol compound (E). Water-absorbent resins obtained in the method of the present invention provide high absorption while providing safety with very little amount of a water-soluble component.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: August 4, 1998
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Keiji Tanaka, Masashi Date, Satoshi Tamabuchi, Tsuyoshi Yuki, Kenjiro Tsubota