Patents Examined by Benjamin Gillespie
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Patent number: 7645849Abstract: A cleaning blade member comprising a polyurethane formed by using a polyol consisting essentially of a polycarbonatediol, a polyisocyanate, and a crosslinking agent containing a short chain diol and a triol, the polyurethane having a tensile strength at 60° C. of 200 kg/cm2 or higher, and a tensile strength retention ?T, represented by the following equation, of 40% or more: ?T(%)=T60/T10×100 where T10 denotes a tensile strength at 10° C., and T60 denotes the tensile strength at 60° C.Type: GrantFiled: June 8, 2005Date of Patent: January 12, 2010Assignee: Synztec Co., Ltd.Inventors: Masahiro Omori, Shuji Abe
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Patent number: 7622542Abstract: The present invention relates to plastic moldings that are prepared from optionally filled polyurethanes. The plastic molding of the present invention exhibit high tenacity, flexural strength and heat stability. This invention also relates to a process for the preparation of these plastic moldings and specifically to a process for the production of large parts comprising these plastic moldings.Type: GrantFiled: December 14, 2005Date of Patent: November 24, 2009Assignee: Bayer MaterialScience AGInventors: Peter Haas, Reiner Paul, Dirk Wegener
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Patent number: 7619052Abstract: A blade for electrophotographic apparatus which has a blade member formed of a polyurethane resin, wherein the polyurethane resin is a resin produced by using a polyurethane raw-material composition containing at least the following components (A) to (E): (A) a polyisocyanate; (B) a polyol having a number average molecular weight of 2,000 or more and 4,000 or less; (C) a chain extender having a molecular weight of 200 or less: (D) a polyol having a number average molecular weight which is smaller than the number average molecular weight of the component-(B) polyol and is larger than the molecular weight of the component-(C) chain extender; and (E) a urethane curing catalyst.Type: GrantFiled: March 24, 2006Date of Patent: November 17, 2009Assignee: Canon Kasei Kabushiki KaishaInventors: Shouji Inoue, Taku Hatanaka, Kenichi Mochizuki, Mayuko Kodama
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Patent number: 7612160Abstract: The present invention relates to a mono- and/or polyallyl-polyether-urethane, to water-soluble or water-dispersible polymers which comprise such a polyether-urethane in copolymerized form, and to cosmetic or pharmaceutical compositions which comprise a water-soluble or water-dispersible polymer based on a mono- and/or polyallyl-polyether-urethane.Type: GrantFiled: December 16, 2003Date of Patent: November 3, 2009Assignee: BASF SEInventors: Son Nguyen-Kim, Klemens Mathauer, Claudia Wood
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Patent number: 7576158Abstract: Disclosed is the production of isocyanate-based or silane-functional adhesive and/or coating materials in the form of reactive single-component granulates and the use thereof. In particular, the reactive one-component coating-material and/or adhesive granules of the include at least one isocyanate-reactive starting polymer and at least one diisocyanate and/or polyisocyanate. Optionally, the granules of the invention may further include at least one catalyst and/or at least one wax and/or at least one resin and/or at least one preferably non-isocyanate-reactive polymer. The granules of the invention may contain an excess of diisocyanate and/or polyisocyanate which amounts to 0.5% to 30 w %, and is preferably generated by free terminal isocyanate groups.Type: GrantFiled: February 6, 2003Date of Patent: August 18, 2009Assignee: Jowat AGInventors: Theodor Hippold, Felix Starck, Christian Terfloth
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Patent number: 7572876Abstract: A highly reactive polyurethane powder coating composition, which contains uretdione groups that are hardenable at low temperatures, contains A) at least one uretdione-containing powder coating hardener based on aliphatic, (cyclo)aliphatic or cycloaliphatic polyisocyanates and hydroxyl-containing compounds, the hardener having a melting point of from 40 to 130° C., a free NCO content of less than 5% by weight, and a uretdione content of 6-18% by weight; B) at least one hydroxyl-containing polymer having a melting point of from 40 to 130° C., and an OH number of between 20 and 200 mg KOH/g; C) 0.001-3% by weight of at least one tetraalkyl ammonium carboxylate catalyst, based on a total amount of components A) and B). Components A) and B) are present in a ratio so that for each hydroxyl group of component B) there is from 0.3 to 1 uretdione group of component A).Type: GrantFiled: May 3, 2004Date of Patent: August 11, 2009Assignee: Evonik Degussa GmbHInventors: Emmanouil Spyrou, Holger Loesch, Andreas Wenning
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Patent number: 7553921Abstract: A polyether polyol composition, the reactivity of which with a polyisocyanate can be controlled, to thereby obtain an isocyanate group-terminated prepolymer having excellent storage stability. A polyether polyol composition comprising a polyether polyol obtained by a ring-opening polymerization of an alkylene oxide in the presence of a composite metal cyanide complex catalyst, and a phosphoric acid compound comprising a phosphoric acid selected from orthophosphoric acid, polyphosphoric acid and polymetaphosphoric acid, and/ or a partial ester of such a phosphoric acid, wherein the polyether polyol composition contains metals derived from the composite metal cyanide complex catalyst in an amount of from 1 to 30 ppm based on the polyether polyol, and the above phosphoric acid compound in an amount of from 0.5 to 100 ppm based on the polyether polyol.Type: GrantFiled: July 26, 2005Date of Patent: June 30, 2009Assignee: Asahi Glass Company, LimitedInventors: Chitoshi Suzuki, Hiroki Fukuda, Shigeru Ikai
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Patent number: 7531614Abstract: Water-thinnable polyurethane with at least two free OH groups obtainable from a first conversion of a primary and/or secondary alkanolamine with a NCO compound giving an intermediate product, followed by the addition of a cyclic carboxylic anhydride to the intermediate product; with the NCO compound exhibiting at least one free NCO group and no blocked NCO group; all alkanolamine being converted during the first conversion to the intermediate product such that the nitrogen atom of the alkanolamine reacts with one of the free NCO groups of the prepolymer to form a urea bond; and the cyclic carboxylic anhydride reacting, with ring opening, with the OH group, originating from the alkanolamine, of the intermediate product; and its use for the production of hot curing coating compositions.Type: GrantFiled: March 25, 2003Date of Patent: May 12, 2009Assignee: PPG Industries Ohio Inc.Inventors: Hans-Dieter Hille, Karsten Jahny, Paul Lamers
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Patent number: 7524435Abstract: The use of a compound comprising a nitrogenous heterocyclic group with five cyclic members including, at least two nitrogen atoms, one of the nitrogen atoms bearing a hydrogen atom to promote the opening/closing reaction of uretidione cycles in the presence of a nucleophile compound provided that, when the nitrogenous heterocyclic group is imidazole, the opening/closing reaction is not the closing reaction of the uretidione cycle in the presence of a quaternary ammonium salt.Type: GrantFiled: February 23, 2005Date of Patent: April 28, 2009Assignee: Rhodia ChimieInventor: Jean-Marie Bernard
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Patent number: 7465828Abstract: The method for preparing hydrazodicarbonamide (HDCA) using biuret as a starting material is disclosed. The method comprises the steps of; obtaining metal monohalobiuret salt by reacting a biuret with a metal hypohalogen compound, or by reacting the biuret with a halogenating agent and a base; and reacting the obtained metal monohalobiuret salt with ammonia, wherein the hydrazodicarbonamide is produced in the presence of a catalyst including bromine or iodine atom and generating bromine or iodine ion during the reaction.Type: GrantFiled: December 17, 2004Date of Patent: December 16, 2008Assignee: J&J Chemical Co., Ltd.Inventors: Chun-Hyuk Lee, Sang-Jin Han
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Patent number: 7462680Abstract: Binder combinations containing polyisocyanates, special lactone-based polyols and polyester polyols and to their use for producing coatings, preferably on plastics.Type: GrantFiled: July 23, 2004Date of Patent: December 9, 2008Assignee: Bayer MaterialScience AGInventors: Christian Wamprecht, Jörg Tillack
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Patent number: 7408014Abstract: A modified polyurethane including a lipid substituent pendant from at least one urethane nitrogen and/or at least one carbon atom of the modified polyurethane, methods of preparing modified polyurethanes and the use thereof as an implantable biomaterial.Type: GrantFiled: July 8, 2004Date of Patent: August 5, 2008Assignee: The Children's Hospital of PhiladelphiaInventors: Robert J. Levy, Ivan Alferiev, Stanley J. Stachelek
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Patent number: 7371807Abstract: The present invention is directed to blocked biuret group-containing polyisocyanate compositions, wherein the blocking agent is of the formula: wherein R1, R2, R3 and R4 may be the same or different and represent a moiety selected from the group consisting of hydrogen, C1-C6-alkyl and C3-C6-cycloalkyl, R5 represents a moiety selected from the group consisting of C1-C10-alkyl and C3-C10-cycloalkyl, and B is a group according to one of the following structural formulas wherein each occurrence of R6, R7, and R8 may be the same or different and represent a moiety selected from the group consisting of C1-C6-alkyl and C3-C6-cycloalkyl and R9 is a moiety selected from the group consisting of hydrogen, C1-C6-alkyl and C3-C6-cycloalkyl.Type: GrantFiled: October 21, 2004Date of Patent: May 13, 2008Assignee: Bayer MaterialScience LLCInventors: Lanny D. Venham, Kyli Martin, Richard R. Roesler, Myron W. Shaffer, Michael K. Jeffries
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Patent number: 7307135Abstract: A high-reactivity liquid polyurethane composition which contains at least one uretdione group and cures at a low baking temperature can be used for producing plastics, particularly surface coatings and adhesives. The polyurethane composition contains A) at least one curing agent which contains at least one uretdione group and is obtained from i) an aliphatic polyisocyanate, a (cyclo)aliphatic polyisocyanate, a cycloaliphatic polyisocyanate or mixtures thereof, and ii) at least one hydroxyl-containing compound, the curing agent having a free NCO content of less than 5% by weight and a uretdione content of from 1 to 18% by weight; and B) at least one catalyst.Type: GrantFiled: October 6, 2004Date of Patent: December 11, 2007Assignee: Degussa AGInventor: Emmanouil Spyrou
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Patent number: 7300997Abstract: Polyurethane powder coating compositions based on epoxy-terminated polyaddition compounds having uretdione groups, which cure at low baking temperatures, a process for preparing such compositions, and their use for producing plastics, especially polyurethane powder coatings, which crosslink at low baking temperatures to give high-gloss or matt, light-stable and weather-stable coating films.Type: GrantFiled: October 14, 2004Date of Patent: November 27, 2007Assignee: Degussa AGInventors: Andreas Wenning, Emmanouil Spyrou