Patents Examined by Rachel Gorr
  • Thiol activation of polyurethanes and methods of making the same
    Patent number: 6890998
    Abstract: A polyurethane having a thiol substituent pendant from at least one nitrogen and/or at least one carbon atom of the polyurethane. A polyurethane having a thiol substituent pendant from at least one nitrogen and/or at least one carbon atom of the polyurethane, wherein the thiol substituent has a formula: —RL—(S—R1)n wherein n is an integer from 1 to 3; RL is an (n+1)-valent organic radical having at least one carbon atom; and R1 is a member selected from the group consisting of H, C(O)R3, and SR4, wherein R3 is a member selected from the group consisting of C1 to C6 alkyl and R4 is a heterocyclic group or an electron deficient aromatic group.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: May 10, 2005
    Assignee: The Children's Hospital of Philadelphia
    Inventors: Ivan Alferiev, Ilia Fishbein, Robert J. Levy
  • Powder coatings produced with crosslinkers capable of curing at low temperatures and coated articles produced therefrom
    Patent number: 6891012
    Abstract: A solid isocyanate-based composition having a glass transition temperature of at least 30° C. is produced by at least partially blocking the isocyanate groups of a polyisocyanate with a compound corresponding to the specified Formula I. This blocked isocyanate composition is useful in the production of powder coatings which are capable of being cured at temperatures of from 80 to 220° C.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: May 10, 2005
    Assignee: Bayer Materialscience LLC
    Inventors: Thomas Faecke, Ramesh Subramanian, James W. Rawlins, Eric J. Vidra
  • Polythiophenes, block copolymers made therefrom, and methods of forming the same
    Patent number: 6887965
    Abstract: The present invention relates to polythiophenes, particularly regioregular head-to-tail poly(3-alkylthiophenes) (HT-PATs), block copolymers made therefrom, and their methods of formation. The present invention provides HT-PATs with well-defined, specific end-groups, functionalization of the defined HT-PATs, and incorporation of end group functionalized HT-PATs into block copolymers with structural polymers. The intrinsically conductive diblock and triblock copolymers, formed from the HT-PATs, have excellent conductivity and low polydispersities that are useful in a number of applications. The block copolymers of the present invention have been found to exhibit conductivities that range from a low of 10?8 S/cm for certain applications to as high as several hundred S/cm or more.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: May 3, 2005
    Assignee: Carnegie Mellon University
    Inventors: Richard D. McCullough, Jinsong Liu, Paul C. Ewbank, Elena E. Sheina
  • Gas-barrier polyurethane resin, and adhesive for laminate, gas-barrier film and paint containing the same
    Patent number: 6887966
    Abstract: The polyurethane resin produced by reacting a component composed mainly of an active hydrogen-containing compound with a component composed mainly of an organic polyisocyanate compound which contains a backbone structure represented by the formula: in an amount of 25% by weight or higher, exhibits a high gas-barrier property and a high adhesion property. Accordingly, the present invention provides: (A) a two-part liquid curable polyurethane resin composition having an excellent adhesion property; (B) a heat-curing gas-barrier polyurethane resin useful as a packaging material; and (C) a paint having excellent rust-proofing property, corrosion resistance and aesthetic decorating property.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: May 3, 2005
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takeshi Nomura, Takeshi Koyama
  • Process for preparing double metal cyanide catalyzed polyols
    Patent number: 6884826
    Abstract: The present invention provides a process for preparing a polyoxyalkylene polyol by polyoxyalklating a starter compound with a mixture of two different alkylene oxide monomers in which the first alkylene oxide monomer content of the mixture decreases as the content of the second alkylene oxide monomer increases over the course of the polyoxyalkylation, digesting unreacted monomers of the alkylene oxides and capping the polyol.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: April 26, 2005
    Assignee: Bayer Antwerp, N.V.
    Inventors: Bi Le-Khac, Todd D. Gentile
  • Low temperature curable, two-component, waterborne film-forming composition
    Patent number: 6884845
    Abstract: A waterborne film-forming composition is provided that includes a stable aqueous dispersion of a mixture of a polyester polyol and a carboxylic acid-containing acrylic polymer polyol having a weight ratio of polyester polyol to acrylic polymer polyol in the range of 10:90 to 30:70; and a polyisocyanate crosslinking agent where the equivalent ratio of hydroxyl groups to isocyanate groups is from 0.8:1 to 1.7:1. The polyol component is prepared by polymerizing a mixture of ethylenically unsaturated polymerizable monomers that includes at least one carboxylic acid group-containing monomer; at least one primary alcohol group-containing monomer; and at least one glycidyl ester of an aliphatic saturated monocarboxylic acid in the presence of at least one polyester polyol. Multi-layer composite coatings and coated substrates are also provided.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: April 26, 2005
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Shanti Swarup, Thi Bach-Phuong Dau
  • Polyurethane resin water dispersion and aqueous polyurethane adhesive
    Patent number: 6881788
    Abstract: Polyurethane resin water dispersion being good in storage stability and excellent in initial adhesion and resistance to moist heat, and aqueous polyurethane adhesive employing the polyurethane resin water dispersion. The polyurethane resin water dispersion is produced in the manner that polyisocyanate is allowed to react with polycaprolactone polyol comprising polycaprolactone polyol having a number average molecular weight of not less than 3,000 and active-hydrogen-group-containing compound having anionic group, to synthesize isocyanate terminated prepolymer, first, and, then, the isocyanate terminated prepolymer thus produced is allowed to react with polyamine in water. The use of the polyurethane resin water dispersion can produce the aqueous polyurethane adhesive having improved storage stability, initial adhesion and resistance to moist heat.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: April 19, 2005
    Assignee: Mitsui Takeda Chemicals, Inc.
    Inventors: Hyoue Shimizu, Hiroyuki Shiraki
  • One-component, waterborne film-forming composition
    Patent number: 6881786
    Abstract: A film-forming composition that includes a stable aqueous dispersion of a mixture of a polyester polyol and a carboxylic acid-containing acrylic polymer polyol and a crosslinking agent having functional groups reactive with hydroxyl groups. The weight ratio of polyester polyol to acrylic polymer polyol is in the range of 10:90 to 30:70. The crosslinking agent is one or more blocked isocyanates or aminoplasts. The equivalent ratio of hydroxyl groups to reactive functional groups on the crosslinking agent is from 0.8:1 to 1.7:1. The film forming composition can be used in multi-layer composite coating compositions that include a base coat layer and a substantially pigment-free topcoat deposited over at least a portion of the base coat layer, the topcoat composition including the present film-forming composition.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: April 19, 2005
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Shanti Swarup, Thi Bach-Phuong Dau
  • Microcapsule and process for manufacturing the same
    Patent number: 6881810
    Abstract: A microcapsule which includes a polymer as a capsule wall of the microcapsule, in which the polymer is obtained by polymerizing a dendritic branching molecule having a hydroxyl group in a terminal thereof, an isocyanate compound, and a compound having two or more active hydrogen atoms in a molecule thereof. A process for manufacturing a microcapsule includes the step of polymerizing an isocyanate compound, a dendritic branching molecule having a hydroxyl group in a terminal thereof, and a compound having two or more active hydrogen atoms in a molecule thereof, so as to form a capsule wall of the microcapsule.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: April 19, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yuki Matsunami, Shintaro Washizu
  • Process for making a PIPA-polyol
    Patent number: 6881783
    Abstract: Process for preparing a polyol comprising particulate material is dispersed from and in an amount 30-80% by weight.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: April 19, 2005
    Assignee: Huntsman International LLC
    Inventors: Gabriel A Verhelst, Alphonse E J Bruyninckx
  • Urethane resins
    Patent number: 6878794
    Abstract: Amine-terminated urethane oligomer compositions are described that include very high oligomer concentrations. The compositions are melts of the amine-terminated oligomers. The compositions can include one or more property modifiers. The compositions are useful in the formation of crosslinked copolymers, especially with epoxy resins. The resulting copolymers are useful in the formation of coatings.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: April 12, 2005
    Assignee: Tennant Company
    Inventors: Joseph S. Keute, Anne-Marie Thunnissen, Robert J. Tweedy, Jr.
  • Alternative moisture cure catalysts and cold curing polyisocyanate adhesives prepared therefrom
    Patent number: 6878795
    Abstract: Cold curing polyisocyanate adhesive compositions suitable for use in the preparation of engineered lumber composites. Additionally provided are catalysts comprising tertiary amine alkoxylates that are reduced in or substantially free of isocyanate-reactive hydroxylic or amine hydrogen atoms. Further provided is a process for preparing composites articles using the adhesive compositions and composite articles prepared from the adhesive compositions. Composite articles prepared from the adhesive compositions have a substantially increased resistance to delamination.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: April 12, 2005
    Assignee: Huntsman International LLC
    Inventors: Joseph J. Marcinko, Anthony A. Parker, Herbert R. Gillis
  • Coated golf ball
    Patent number: 6875837
    Abstract: The present invention provides a coated golf ball having good appearance, excellent durability after repeated hitting, excellent abrasion resistance after washing by brushing and excellent stain resistance with a grass. The present invention relates to a coated golf ball formed by applying a paint on the surface of a golf ball body, wherein the paint comprises polyol containing urethane polyol as a main material and polyisocyanate curing agent, and the curing agent comprises 25 to 35% by weight of isocyanurate polyisocyanate derived from hexamethylene diisocyanate, 25 to 35% by weight of biuret polyisocyanate derived from hexamethylene diisocyanate and 35 to 50% by weight of isocyanurate polyisocyanate derived from isophorone diisocyanate.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: April 5, 2005
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Kazuhiko Isogawa, Seiichiro Endo
  • Sealing gasket for closure and process for production of closure using the same
    Patent number: 6872796
    Abstract: A sealing gasket for closure, made of a polyurethane elastomer obtained by reacting the following (A) and (B): (A) a polyisocyanate component having an isocyanate group content of 5 to 38% by weight and average 2 to 3 functional groups, obtained by modifying an aliphatic isocyanate and/or an alicyclic isocyanate, and (B) a polyol component having a hydroxyl value of 20 to 350 mgKOH/g and average 2 to 3 functional groups; and a process for producing a closure using such a sealing gasket. The closure sealing gasket made of a polyurethane elastomer, obtained by the present invention, when used for a closure (e.g. a metal closure of food container), causes no yellowing by ultraviolet light, has a strength at least equal to those of sealing gaskets produced from an aromatic isocyanate.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: March 29, 2005
    Assignees: Toyo Seikan Kaisha, Ltd., Nippon Polyurethane Industry Co, Ltd.
    Inventors: Toshinori Moriga, Hiroei Yokota, Toshihiko Tsuchida, Noriyoshi Yano
  • Copolycarbonate diol and thermoplastic polyurethane obtained therefrom
    Patent number: 6872797
    Abstract: A copolycarbonate diol comprising: (a) recurring units each represented by the following formula (1): (b) recurring units each independently represented by the following formula (2): wherein n is 4, 5 or 6; and (c) terminal hydroxyl groups, wherein the copolycarbonate diol has a number average molecular weight of from 300 to 20,000, and wherein the amount of the recurring units (a) is from 10 to 90% by mole, based on the total molar amount of the recurring units (a) and (b). A thermoplastic polyurethane obtained by copolymerizing the above-mentioned copolycarbonate diol with a polyisocyanate.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: March 29, 2005
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Eizaburou Ueno, Tetsuo Masubuchi
  • Polymeric urea-urethane rheology control agents and a process for their preparation
    Patent number: 6870024
    Abstract: The invention relates to a polymeric urea-urethane obtainable by first reacting a diisocyanate with a polyol to form a doubly NCO-terminated urethane prepolymer. Further reaction is subsequently carried out with a mixture of a primary monoamine and a primary diamine. After the second reaction the polymeric urea-urethane present is substantially free of isocyanate and of the monoamine and diamine used. It can be used as an agent for controlling the rheology of liquid polymers or polymer solutions.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: March 22, 2005
    Assignee: BYK-Chemie GmbH
    Inventors: Karlheinz Haubennestel, Stefan Moessmer, Sascha Huebers, Baerbel Gertzen, Holger Heilmann
  • Water-soluble hotmelt adhesive
    Patent number: 6870006
    Abstract: The present invention pertains to a water-soluble hotmelt adhesive, containing: 40 to 70% by weight of at least one homopolymer or copolymer with free carboxylic acid groups based on ethylenically unsaturated monomers (component A), 15 to 45% by weight of at least one water-soluble or water-dispersible polyurethane (component B), 10 to 45% by weight of at least one inorganic or organic base (component C), and 0 to 20% by weight of further additives (component D), wherein the sum of such components is 100% by weight. The water-soluble hotmelt adhesive is suitable for producing textile laminates, moisture-tackifiable papers and at least two-ply hygiene-papers, in particular tissue.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: March 22, 2005
    Assignee: Henkel Kommanditgesellschaft auf Aktien (Henkel KGaA)
    Inventors: Dario Cavalli, Stefano Carrara, Thomas Moller
  • Process for the preparation of thermoplastic, non-tacky polyurethanes
    Patent number: 6869999
    Abstract: Thermoplastic polyurethanes (TPU) with a low tendency towards surface tackiness of the granules are prepared by applying at least one wetting agent satisfying specified criteria and at least one solid powdering agent to the TPU before and/or after comminution of the TPU.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: March 22, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Kaufhold, Eva Gestermann, Wolfgang Röhrig
  • Process for preparing polyether poly(N-substituted urethane)
    Patent number: 6864328
    Abstract: The present invention relates to a method of preparing a polyether poly(N-substituted urethane) comprising an electrolytic compound and a polymer matrix, wherein the polymer matrix is a copolymer comprising polyether unit and polyurethane unit and has 50,000-2,000,000 of a weight average molecular weight, where N-positions of the polyurethane unit are substituted with oligo(ethylene oxide) derivatives which provide flexibility and electrolytic conduction of the polymer matrix by controlling its length, composition, structure and crosslinked degree. Accordingly, the solid polymer electrolyte of the present invention provides excellent thermal stability, electrochemical stability and mechanical properties and thus, is suitable for use in polymer secondary batteries and electrochemical devices.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: March 8, 2005
    Assignee: Hanyank Hak Won Co., Ltd.
    Inventors: Si-Tae Noh, Jung-Ohk Kweon, Hee Sung Choi
  • Branched polyurethanes, formulations comprising them, and their use for thickening aqueous systems
    Patent number: 6861493
    Abstract: Branched polyurethanes which are preparable by reacting A) one or more aliphatic and/or aromatic isocyanates having a functionality of at least three with B) from 90.0 to 99.8 eq. % of one or more polyethers of the structure RO(SO)w(BO)x(PO)y(EO)zH ?and C) from 0.2 to 10.0 eq. % of at least one of the compounds from the following group: a. polyethers b. polyether polydimethylsiloxane diols c. polyester polydimethylsiloxane diols d. polydimethylsiloxane diols e. polydimethylsiloxane diamines f. polyether diamines.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: March 1, 2005
    Assignee: Goldschmidt AG
    Inventors: Sandra Bauer, Dirk Edelmann, Eberhard Esselborn, Markus Hoschke, Günthern Link, Stefan Silber