Patents Examined by D. R. Wilson
  • Patent number: 6815474
    Abstract: The invention relates to a water-based intaglio printing ink especially suited for the intaglio printing of security documents, such as postage stamps, stock certificates and the like, wherein the water-based intaglio printing ink having a) an epoxy resin ester reacted with an unsaturated monobasic acid and a reactive monomer, b) a glycol and/or glycol ether c) a pigment, d) a monoalkanolamine, e) a drier and f) water.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: November 9, 2004
    Assignee: Sun Chemical Corporation
    Inventors: Joseph Malanga, Solomon J. Nachfolger
  • Patent number: 6809216
    Abstract: Provided are fluorine-containing compounds, and polymers derived therefrom, for use in compositions used for treating textile substrates. The present invention further provides methods of making fluorine-containing compounds and polymers derived therefrom, compositions comprising the compounds and/or polymers of the present invention, methods of treating substrates, and the treated products derived therefrom.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: October 26, 2004
    Assignee: Honeywell International Inc.
    Inventors: David E. Bradley, Jing Ji Ma, David Nalewajek, George J. Samuels, Leonard M. Stachura, Michael Van Der Puy
  • Patent number: 6764763
    Abstract: An aqueous fluoroelastomer curable composition comprising an aqueous fluoroelastomer dispersion and a basic polyol curing agent, and an article having a coating film formed from this composition. The aqueous fluoroelastomer curable composition has a long pot life although it is a one-fluid type aqueous dispersion, and forms a cured film having sufficient strength and heat resistance at a relatively low temperature in a short time.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: July 20, 2004
    Assignee: Daikin Industries Ltd.
    Inventors: Nobuyuki Tomihashi, Koichiro Ogita, Kiyotaro Terasaka, Yasukazu Nakatani
  • Patent number: 6756451
    Abstract: Process for the hydrogenation of a polymer composed of conjugated diene monomer units and a nitrile group-containing monomer units, in which hydrogenation is carried out in the presence of hydrazine, and an oxidizing compound, with the hydrogenation being carried out in the presence of a antioxidant. It is preferred for NBR to be used as polymer.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: June 29, 2004
    Assignee: DSM IP Assets B.V.
    Inventors: Johannes W. Belt, Olav M. Aagaard
  • Patent number: 6753358
    Abstract: A polymer network formed by crosslinking poly(propylene fumarate) with a fumarate derivative. The fumarate derivative is one in which the PPF is soluble, is preferably an alkyl fumarate, and is more preferably selected from the group consisting of diethyl fumarate, dimethyl fumarate, methyl ethyl fumarate, diisopropyl fumarate, and dibutyl fumarate. The network can be formed by photo-crosslinking and can be porous. In some embodiments, the poly(propylene fumarate) and the fumarate derivative are each present in an amount effective to produce a polymeric network useful for in vivo applications. The network can be formed from an injectable, in situ crosslinkable composite formulation, or can be prefabricated from a crosslinkable composite formulation such as stereolithography, rapid prototyping, injection molding, and extrusion molding.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: June 22, 2004
    Assignee: William Marsh Rice University
    Inventors: John P. Fisher, Antonios G. Mikos
  • Patent number: 6746562
    Abstract: A thermo-reversible, crosslinkable elastomer, a composition containing the same, a rubber-bonded body and a rubber structure containing the rubber-bonded body are disclosed. The thermo-reversible, crosslinkable elastomer has an elastomer main-chain and a crosslinkable portion having at least one group selected from the group consisting of acid anhydride group and hydroxyl group. The thermo-reversible, crosslinkable elastomer can form stable crosslinked structure at room temperature, thereby having rubber plasticity, show sufficient melt flowability at molding temperature of general thermoplastic resin, and repeatedly reproduce crosslinking formation and crosslinking dissociation.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: June 8, 2004
    Assignee: The Yokohama Rubber Co., LTD
    Inventors: Keisuke Chino, Masahiro Ikawa, Junichiro Natori
  • Patent number: 6743859
    Abstract: A method of producing polyvinyl alcohol polymer, with which a high-strength polyvinyl alcohol polymer with a high degree of saponification can be obtained, the polyvinyl ester saponification process can be linked directly with the spinning process, in which the polyvinyl alcohol polymer is made into fiber, the mole ratio of alcohol with respect to the polyvinyl alcohol can be freely selected, and the concentration of the polyvinyl alcohol obtained by the saponification reaction is high. The polyvinyl alcohol polymer that is obtained by this method exhibits a high block character value and is excellent in randomness is provided, wherein a polyvinyl ester is subject to a saponification reaction in an alcohol-containing organic solvent under the presence of a saponification catalyst and the saponification is carried out while distilling off the carboxylic acid ester that is produced by the saponification reaction.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: June 1, 2004
    Assignee: Kuraray Co., Ltd.
    Inventors: Tsuyoshi Kowaka, Junji Funakoshi, Hiroyuki Miyawaki, Kazunori Watanabe
  • Patent number: 6736856
    Abstract: The invention provides a production method capable of reducing the amount of the chemical liquid (hydrazine and sodium carbonate, etc.) for applying a crosslinking treatment and a hydrolytic treatment, capable of shortening the treatment time, and capable of obtaining crosslinked acrylic moisture absorbing fibers having a sufficient moisture absorbing-moisture releasing performance and provides crosslinked acrylic moisture absorbing fibers. In the case of producing the crosslinked acrylic moisture absorbing fibers by applying a crosslinking treatment and a hydrolytic treatment to acrylic fibers, acrylic fibers made of a copolymer containing from 1 to 5% by weight a comonomer having an acidic group as a comonomer component are used as the raw material fibers to be treated.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: May 18, 2004
    Assignee: Toho Tenax Co., Ltd.
    Inventors: Hayashi Takahashi, Hideo Matsumoto
  • Patent number: 6730464
    Abstract: The present invention has an object of the present invention to provide a polyvinyl acetal resin for heat-developable photosensitive materials as well as a heat-developable photosensitive material while solving such problems as coating solution pot life, coloration of heat-developable photosensitive material, fog, poor gradation, insufficient sensitivity and poor undeveloped film storability and making it possible for the materials to acquire good image characteristics. The present invention is constituted of a polyvinyl acetal resin for heat-developable photosensitive materials which is a polyvinyl acetal resin synthesized by the acetalization reaction between a polyvinyl alcohol and an aldehyde and which comprises having a degree of polymerization of 200 to 3,000, a residual acetyl group content of 0 to 25 mole percent and a residual hydroxyl group content of 17 to 35 mole percent, as calculated while regarding one acetal group as two acetalized hydroxyl groups, a water content of not more than 2.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: May 4, 2004
    Assignee: Sekisui Chemical Co., Ltd.
    Inventor: Yoshitaka Miyake
  • Patent number: 6723794
    Abstract: An olefin thermoplastic elastomer composition comprises a crystalline polyolefin resin (A) and an ethylene/&agr;-olefin/nonconjugated polyene copolymer rubber (B), and optionally a softener (C) and/or an inorganic filler (D), in a specific ratio. The copolymer rubber (B) is prepared by the use of a metallocene catalyst and comprises ethylene, an &agr;-olefin of 3 to 20 carbon atoms and a nonconjugated polyene. This composition ca provide molded products of more excellent tensile strength, elongation at break, elastomeric properties (elongation set, permanent compression set, etc.), heat resistance and low-temperature properties than the conventional non-crosslinked olefin thermoplastic elastomers, even if the composition is in the non-crosslinked form. The composition in the partially or completely crosslinked form can provided molded products of more excellent low-temperature properties, tensile strength, elongation at break and elastomeric properties than the conventional vulcanized rubbers.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: April 20, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Masaaki Kawasaki, Keiji Okada, Tetsuo Tojo, Kyoko Kobayashi, Yuichi Itoh, Akira Uchiyama, Toshiyuki Tsutsui, Toshihiro Sagane
  • Patent number: 6720395
    Abstract: A method of producing a stellar polymer which comprises polymerizing a vinyl monomer in the manner of living radical polymerization and adding a compound having two or more polymerizable carbon-carbon double bonds at the end point of the polymerization is provided. A composition which comprises, as an essential component, a hydroxyl-terminated polymer falling under said polymer and a compound having, in each molecule, not less than two functional groups reactive with the hydroxyl group is provided.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: April 13, 2004
    Assignee: Kaneka Corporation
    Inventor: Yoshiki Nakagawa
  • Patent number: 6720389
    Abstract: In a production process for a water-absorbent resin, comprising the steps of: blending a liquid material and a water-absorbent resin; and heating the resultant mixture in order to produce a modified water-absorbent resin, the present invention is to provide: a method for uniformly and efficiently treating a water-absorbent resin favorably in view of industry, and as a result, a good-balanced water-absorbent resin having various excellent properties, such absorption capacity without a load, absorption capacity under a load, and single-layer absorption capacity under a load in contact with an aqueous liquid. The production process comprises the step of spray-blending a water-absorbent resin (A) and a liquid material (B) with a blending apparatus equipped with a spray nozzle (C), wherein the liquid material (B) is sprayed from the spray nozzle (C) and its spray pattern is a circular and hollow cone shape or a double-convex-lens and elliptic cone shape.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: April 13, 2004
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Takumi Hatsuda, Yoshio Irie, Masatoshi Nakamura, Katsuyuki Wada, Shinichi Fujino, Kazuki Kimura, Kunihiko Ishizaki
  • Patent number: 6712978
    Abstract: A process for manufacturing an adsorbent for reducing the concentration of fibrinogen and/or fibrin in blood or blood plasma in which a carrier material, which is preferably a copolymer derived from (meth)acrylates and or (meth)acrylic acid amides, is activated by amination, and subsequently undergoes thermal treatment at a temperature of over 100° C. An adsorber for the purpose of reducing the concentration of fibrinogen and/or fibrin in blood or blood plasma may be produced from the adsorbent.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: March 30, 2004
    Assignee: Fresenius HemoCare GmbH
    Inventors: Hans-Peter Leinenbach, Heike Mitschulat, Wolfgang Metzger, Veit Otto, Martin Hepper
  • Patent number: 6703450
    Abstract: Compositions of specialty fluoroelastomers containing copolymerized units of tetrafluoroethylene, propylene, optionally vinylidene fluoride, and a cure site monomer selected from the group consisting of i) trifluoroethylene, ii) 3,3,3-trifluoropropene-1, iii) 1,2,3,3,3-pentafluoropropylene, iv) 1,1,3,3,3-pentafluoropropylene, and v) 2,3,3,3-tetrafluoropropene are readily curable with polyhydroxy curing systems. The resulting cured articles have a combination of excellent resistance to alkaline fluids, superior tensile properties and compression set resistance.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: March 9, 2004
    Assignee: DuPont Dow Elastomer, L.L.C.
    Inventors: John Gordon Bauerle, Walter Werner Schmiegel
  • Patent number: 6699942
    Abstract: A curable powder coating composition is disclosed comprising a film-forming polymer having reactive functional groups, a curing agent having functional groups reactive with the functional groups of the polymer, the curing agent being present in an amount sufficient to cure the coating composition, and a tricarbamoyl triazine compound. The curable powder coating composition has improved mar resistance properties.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: March 2, 2004
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Karen A. Barkac, Karen S. Rechenberg, Masayuki Nakajima
  • Patent number: 6696526
    Abstract: A low-molecular-weight copolymer of tetrafluoroethylene with units of perfluoro alkyl vinyl ethers having a melt index of ≧30 suitable as a mixing component with a higher-molecular-weight copolymer of the same monomers for producing moldings in injection molding or by extrusion.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: February 24, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Ralph Kaulbach, Friedrich Kloos, Gernot Löhr, Peter Stamprech
  • Patent number: 6689436
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: February 10, 2004
    Assignee: Basell Technology Company bv
    Inventors: Gianni Perdomi, Claudio Cometto, Enrico Beccarini
  • Patent number: 6689844
    Abstract: Polymer compositions with reduced living halogen content are used as additive to lubricating oils and are prepared by polymerizing at least one ethylenically unsaturated monomer using a) at least one initiator containing a transferable halogen and b) one or more metal catalysts containing at least one transition metal, in the presence of ligands which can form a coordination compound with the one or more metal catalysts, to obtain a polymer composition having a living halogen content, and after the polymerizing, reacting the polymer composition having a living halogen content with at least one organic nitrogen compound in the presence of a nonpolar solvent, thereby reducing the living halogen content to obtain the polymer composition having a reduced halogen content.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: February 10, 2004
    Assignee: RohMax Additives GmbH
    Inventors: Sebastian Roos, Joseph Martin Bollinger, Markus Scherer
  • Patent number: 6683136
    Abstract: The present invention provides a process of hydrogenating a nitrile copolymer rubber, which comprises subjecting the copolymer to hydrogenation in the presence of a hydrogenation catalyst, a co-catalyst, and a proton acceptor that is non-coordinating with the metal-complex catalyst.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: January 27, 2004
    Assignee: Bayer Inc.
    Inventors: Sharon X. Guo, Paul Nguyen
  • Patent number: 6680082
    Abstract: The present invention relates to neutralized copolymer resins having at least two different metals with one of the metals being zinc. These mixed metal resins are transformed into particulate or powder form for application to metal objects. The powder composition has a good balance of properties including all the advantages associated with neutralized ethylene acid copolymers while also having good powder coating behavior for coatings applied to metal objects. The invention also relates to coated metal objects containing the powder composition and metal.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: January 20, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Tien-Hua Chou, Mark Bernard Kelly