Powdered Coating Composition Patents (Class 525/934)
  • Patent number: 8907130
    Abstract: The invention relates to novel ?-hydroxyalkylamides, to a method for their production and to the use thereof.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: December 9, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Werner Grenda, Emmanouil Spyrou, Thomas Weihrauch, Christoph Lammers, Holger Loesch, Klaus Behrendt
  • Patent number: 8524837
    Abstract: The invention relates to heat-curing powder-lacquer compositions exhibiting a matte surface after curing of the coating, as well as to a simple method for production of the same.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: September 3, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Werner Grenda, Emmanouil Spyrou, Thomas Weihrauch, Christoph Lammers, Holger Loesch, Klaus Behrendt
  • Patent number: 8236865
    Abstract: A hydrophilic vinylidene fluoride resin composition, comprising: porous vinylidene fluoride polymer particles and a hydrophilic polymer having a weight-average molecular weight of at least 2×105 contained in the pores of the porous vinylidene fluoride polymer particles. The composition is preferably obtained by subjecting a slurry containing porous vinylidene fluoride polymer particles after suspension polymerization to an appropriate degree of heat treatment for adjusting the amount of residual polymerization initiator, then impregnating the Polymer particles with a hydrophilic monomer and polymerizing the monomer. The thus-obtained vinylidene fluoride resin composition exhibits persistent hydrophilicity and good processability.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: August 7, 2012
    Assignee: Kureha Corporation
    Inventors: Tomoaki Kawakami, Toshio Hosokawa
  • Patent number: 8138240
    Abstract: Composition suitable for a powder coating composition comprising at least one resin and at least one dispersant wherein the dispersant is added during the resin synthesis or while the resin leaves the reactor.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: March 20, 2012
    Assignee: DSM IP Assets B.V.
    Inventors: Leendert J. Molhoek, Jurjen H. M. Bolks, Jochum Beetsma
  • Patent number: 8063265
    Abstract: A hydrogel having a floatability where from 40% to 90% of a solution and/or suspension to be thickened are thickened starting from the surface of the liquid and the rest of the solution and/or suspension to be thickened is thickened starting from the bottom of the container, a process for preparing the hydrogel and also its use for absorbing blood and/or body fluids, especially in hygiene articles, or for thickening aqueous solutions and/or suspensions, especially for thickening medical wastes.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: November 22, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Beck, Volker Frenz, Anna Kowalski, Elisabeth Selzer, Ernst Jürgen Bauer, Harald Keller, Bernhard Steinmetz
  • Patent number: 8021586
    Abstract: A curable resin composition and powder coating compositions made therefrom including (a) an epoxy resin; (b) an amphiphilic block copolymer containing at least one epoxy resin miscible block segment and at least one epoxy resin immiscible block segment; wherein the immiscible block segment comprises at least one polyether structure provided that the polyether structure of said immiscible block segment contains at least one or more alkylene oxide monomer units having at least four carbon atoms; such that when the epoxy resin composition is cured, the toughness of the resulting cured epoxy resin composition is increased; and (c) at least one curing agent required for the manufacturing, application and proper performance of the powder coating. The amphiphilic block copolymer is preferably an all polyether block copolymer such as a PEO-PBO diblock copolymer or a PEO-PBO-PEO triblock copolymer.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: September 20, 2011
    Assignee: Dow Global Technologies LLC
    Inventors: Kandathil E. Verghese, Marcos P. Franca
  • Patent number: 7960475
    Abstract: A powder coating composition of the present invention includes, as essential components, an epoxy group-containing vinyl copolymer (A) with a glass transition temperature of 40° C. or higher, an epoxy group-containing vinyl copolymer (B) that contains organosiloxane side chains and has a glass transition temperature of 0° C. or lower, and a polyvalent carboxylic acid (C), and is able to form a coating film with excellent external appearance and scratch resistance.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: June 14, 2011
    Assignee: DIC Corporation
    Inventors: Naoyuki Seike, Koichi Yamaguchi, Yutaka Furuya, Tetsuro Agawa
  • Patent number: 7960482
    Abstract: A powder coating composition obtainable by homogeneous mixing of at least two separately produced powder coating compositions as powder coating bases to yield coating compositions having good storage stability and coatings with controlled low gloss levels as well as high exterior durability and stable flexibility.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: June 14, 2011
    Inventors: Roger Fugier, Vincent Berger
  • Patent number: 7951427
    Abstract: The invention relates to thermosetting powder compositions which give coatings proving remarkable weatherability, excellent mechanical properties and an outstanding flow containing a binder which comprises a mixture of amorphous polyesters (A) containing from 50 to 100 mol % of isophthalic acid and from 70 to 100 mol % of neopentyl glycol, and (B) which comprises from 75 to 100 mol % of at least one straight-chain saturated di-carboxylic aliphatic acid having from 4 to 14 carbon atoms and from 75 to 100 mol % of at least one branched chain aliphatic diol.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: May 31, 2011
    Assignee: Cytec Surface Specialties, S.A.
    Inventors: Luc Moens, Nele Knoops, Daniel Maetens
  • Patent number: 7880018
    Abstract: A novel epoxy compound represented by the following general formula (I), and a production process thereof, is provided: Y—(CH2)3—Si(OR1)nR23-n??(I) (wherein, Y is represented by any of the following formulas: wherein, R1 and R2 represent alkyl groups having 1 to 5 carbon atoms, n represents an integer of 1 to 3, R3 and R4 represent hydrogen atoms, alkyl groups having 1 to 6 carbon atoms or trialkylsilyl groups having 1 to 4 carbon atoms, R5 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a trialkylsilyl group having 1 to 4 carbon atoms, R6 to R12 represent hydrogen atoms, alkyl groups having 1 to 6 carbon atoms or trialkylsilyl groups having 1 to 4 carbon atoms, and R13 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a trialkylsilyl group having 1 to 4 carbon atoms or an aryl group).
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: February 1, 2011
    Assignee: Showa Denko K.K.
    Inventors: Nobutoshi Sasaki, Toshio Fujita, Hiroshi Uchida
  • Patent number: 7514478
    Abstract: Powder coating binders having a glass temperature of ?35° C. containing at least one polymer and one or more radiation-curing reactive thinners, a process for the production of these powder coating binders and their use as a component of powder coatings.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: April 7, 2009
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Fäcke, Jan Weikard, Peter Thometzek
  • Patent number: 7396893
    Abstract: The present invention pertains to a siliconized polyester resin that has a sufficiently high Tg that the siliconized polyester is a solid at room temperature. The silicone polyester preferably has a Tg of 30° C. or greater. The silicone polyester can be produced as a particulate and remain stable at room temperature. The particulate silicone polyester is suitable for use in coating compositions, including powder coating compositions. The coating can be clear or pigmented, and thus optionally can include pigment. The coating composition also includes a crosslinker. The coating composition can be ground into a powder. The powder is stable at room temperature. The powder is then capable of being coated on a suitable substrate and then baked to form a coated metal object.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: July 8, 2008
    Assignee: Wacker Chemical Corporation
    Inventors: James D. Greene, Mohammed Khalid Yousuf
  • Patent number: 7381764
    Abstract: The present invention relates to novel radiation-curing powder coating binders containing maleic and/or fumaric acid esters and one or more amorphous or partially crystalline resins containing at least one group that reacts with ethylenically unsaturated compounds under the action of actinic radiation to form a polymer. The binders have a glass transition temperature ranging from 30 to 90° C. The binders can be used as a constituent in coating compositions.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: June 3, 2008
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Fäcke, Jan Weikard, Peter Thometzek
  • Patent number: 7230051
    Abstract: The invention relates to the use of block copolymers as leveling agents for surface coatings, having a weight-average molecular weight of from 1000 to 100000. The leveling agent is a linear or branched block copolymer composed of a polysiloxane block and one or more blocks prepared from ethylenically unsaturated monomers by controlled free-radical addition polymerization. The invention also relates to coating compositions which comprise the leveling agent.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: June 12, 2007
    Assignee: BYK-Chemie GmbH
    Inventors: Bernd Gobelt, Alfred Bubat, Albert Frank, Karlheinz Haubennestel
  • Patent number: 7148295
    Abstract: The invention relates to the use of special mixtures of at least two polycarboxylic acids as crosslinker components for thermally curing powder-lacquer binding agents having groups that are capable of reacting with carboxyl groups. The mixtures include at least two polycarboxylic acids each melting above 95° C. and having up to 20 carbon atoms and consist of at least 5 wt. %, of the polycarboxylic acid with the lowest melting point and at least 10 wt. %, of the polycarboxylic acid with the highest melting point of all polycarboxylic acids present in the mixture to at least 5 wt. %. Additionally, the polycarboxylic acid mixture is a solid below 40° C. and a liquid above 160° C.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: December 12, 2006
    Assignee: Bayer Materialscience AG
    Inventors: Hans-Josef Laas, Christoph Gürtler, Reinhard Halpaap, Michael Grahl, Peter Thometzek, James Rawlins
  • Patent number: 7141618
    Abstract: Powder coating compositions having improved mar and scratch resistance are disclosed. The coatings generally comprise one or more particles that have been modified to render the particles more surface active. The improved resistance is achieved without affecting the appearance or mechanical performance of the coatings. Methods for using the coatings, and the substrates coated therewith, are also disclosed.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: November 28, 2006
    Assignee: PPG Industries Ohio, Inc.
    Inventors: John R. Schneider, Daniela White, Anthony M. Chasser, James B. O'Dwyer, Thomas R. Hockswender
  • Patent number: 7129310
    Abstract: The present invention pertains to a siliconized polyester resin that has a sufficiently high Tg that the siliconized polyester is a solid at room temperature. The silicone polyester preferably has a Tg of 30° C. or greater. The silicone polyester can be produced as a particulate and remain stable at room temperature. The particulate silicone polyester is suitable for use in coating compositions, including powder coating compositions. The coating can be clear or pigmented, and thus optionally can include pigment. The coating composition also includes a crosslinker. The coating composition can be ground into a powder. The powder is stable at room temperature. The powder is then capable of being coated on a suitable substrate and then baked to form a coated metal object.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: October 31, 2006
    Assignee: Wacker Chemical Corporation
    Inventors: James A. Greene, Mohammed Khalid Yousuf
  • Patent number: 7060357
    Abstract: A coating composition contains solid particulates of a mixture of an aminoplast crosslinking agent, a solid polymer having functionality reactive with the aminoplast crosslinking agent, and a crystalline, carbamate-functional additive. The crystalline, carbamate-functional additive has a melting point of at least about 30° C. and is up to about 15% by weight of the powder coating composition.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: June 13, 2006
    Assignee: BASF Corporation
    Inventors: Walter H. Ohrbom, David J. Law, Robert D. Weise, James A. Laugal
  • Patent number: 7041737
    Abstract: The present invention provides a low temperature curing coating powder composition comprising a mixture of a high gloss film-forming system and a low gloss film-forming system. Preferably, the high gloss film-forming system comprises a GMA (glycidyl methacrylate) resin, a curing agent, and a catalyst and forms a coating having a gloss greater than 80% measured at 60°. Preferably the low gloss film-forming system comprises a carboxyl terminated polyester, acrylic resin and a catalyst and forms a coating having a gloss less than 50% measured at 60°. The composition of the present invention provides coatings having a control gloss, which can range from a low to a high gloss and is useful for coating heat-sensitive substrates.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: May 9, 2006
    Assignee: Rohm and Haas Company
    Inventors: Edward G. Nicholl, Andrew T. Daly, Carryll A. Seelig
  • Patent number: 7034075
    Abstract: The invention is directed to a low gloss powder coating composition comprising a first component (a) and a second component (b). The first component (a) comprises a mixture of (i) at least one glycidyl group-containing acrylic resin having epoxide equivalent weight of from about 250 to about 1500 and glass transition temperature of from about 30° C. to about 80° C.; and (ii) a curing agent. The second component (b) comprises at least one carboxyl-group containing material having acid number of from about 10 to about 300 and is not substantially compatible with the first component (a). The two components are dry-blended to obtain the powder coating composition.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: April 25, 2006
    Assignee: H. B. Fuller Licensing & Financing Inc.
    Inventors: Charles J. Torborg, Jeffrey G. Schmierer
  • Patent number: 7026393
    Abstract: Polyurethane powder coating materials comprising polyureas, polyesters, and crosslinkers, which have less than 15 mol % succinic acid as the polycarboxylic acid component. Matt coatings and coated materials comprising or produced using such polyurethane powder coating materials.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: April 11, 2006
    Assignee: Degussa AG
    Inventors: Andreas Wenning, Jörn Volker Weiss
  • Patent number: 6946202
    Abstract: A combination of powder coatings usable in a powder coating method for forming a coating film having visually homogeneous hue by mixing two or more powder coatings of which each color is different. In the combination of powder coatings, each of differences in triboelectric charges of two or more powder coatings is 5.0 ?C/g or less. The coating method usable herein includes the step of applying onto a substrate to be coated two or more powder coatings of which each color is different, in which the triboelectric charges are controlled in the above given ranges.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: September 20, 2005
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Masayuki Maruta, Yukiya Sato, Katsutoshi Aoki, Yasunori Inagaki, Kuniyasu Kawabe, Hisakazu Tajima, Shinji Moriyama
  • Patent number: 6936663
    Abstract: Disclosed is a powder coating composition containing a powder coating resin and a polyhedral oligomeric silsesquioxane (“POSS”) compound.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: August 30, 2005
    Assignee: Conano Corporation
    Inventor: Robert Modisette
  • Patent number: 6927253
    Abstract: Powder clearcoat dispersions (powder slurry clearcoats) preparable by adding a secondary (meth)acrylate copolymer dispersion in liquid and/or powder form to a powder slurry during and/or after its preparation; and the use thereof for producing clearcoat finishes, especially as part of multicoat color and/or effect finishes.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: August 9, 2005
    Assignee: BASF Coatings AG
    Inventors: Walter Lassmann, Heinz-Peter Rink, Horst Hintze-Brüning, Klaus-Dieter Stegmann
  • Patent number: 6890999
    Abstract: A mixture of a self-curing epoxy resin having an equivalent weight of from about 100 to about 700, a melt viscosity of from about 200 to about 2000 centipoise at 150° C. and a low temperature curing agent capable of maintaining its own domain during extrusion which is extruded as one component at a temperature below 220° F. and the extrudate is cooled and pulverized to form a low temperature curable coating powder. The powder cures at a temperature of from about 225 to about 300° F. and produces a coating having an exceptionally smooth surface with either a low or high gloss. The powder is particularly useful for coating heat sensitive substrates such as plastics, paper, cardboard and wood.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: May 10, 2005
    Assignee: Rohm and Haas Company
    Inventors: Jeno Muthiah, Jeremiah J. Teti, Jacquelyn M. Schlessman, William G. Ruth, Carryll A. Seelig
  • Patent number: 6849678
    Abstract: The current process for producing powder coatings can be replaced with a process utilizing supercritical fluids including polymer polymerization, compatibilized blending of powder coating ingredients, and particle size control and classification of the powder coating. Traditionally, powder coating resins are polymerized in solvent based system. Next, the resin is blended with additives in a twin screw extruder at high temperatures. The material is then ground and separated by particle size to form the finished powder coating. This invention replaces the previous process by performing all operations in a supercritical fluid, preferably, carbon dioxide. Polymerization is conducted at any pressure above critical pressure and temperature above critical temperature up to 190°C. Solubility of the polymer in the supercritical fluid allows for control and narrow distribution of the molecular weight and a polydispersity of about 2 or less.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: February 1, 2005
    Assignee: The University of Akron
    Inventors: Sunggyu Lee, H. Bryan Lanterman, Paul Pettit, Jr., Kathy L. Fullerton
  • Patent number: 6844072
    Abstract: The present invention relates to powdered thermosetting compositions including a binder which comprises a carboxyl group containing amorphous isophthalic acid containing polyester, a carboxyl group containing semi-crystalline polyester, at least 10 parts by weight, based on the total weight of the binder, of a specific glycidyl group containing acrylic copolymer and a curing agent having functional groups reactive with the polyesters' carboxyl groups. The powdered thermosetting compositions are useful for the preparation of powdered paints and varnishes which give low gloss coatings having an outstanding flow, a remarkable weatherability and excellent mechanical properties.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: January 18, 2005
    Assignee: Surface Specialties, S.A.
    Inventors: Luc Moens, Nele Knoops, Daniel Maetens
  • Patent number: 6844392
    Abstract: An abradable dry powder coating (22) composition for coating onto a surface (12) for subsequent curing to form into an abradable coating, including a powder (16) formed of uncured thermoset resin with at least 15 volume percent filler, wherein the filler does not substantially melt below the cure temperature of the resin. Method for making the coating composition includes melt-mixing the thermoset resin with at least 15 volume percent of filler, cooling the resulting mass composite, and then breaking the cooled mass composite into powder particles (16). Method of coating an article with an abradable coating includes applying the dry composite powder with the filler therein onto a substrate and curing the dry powder composition, preferably by electrostatic coating. An article is also disclosed which is coated with the abradable coating.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: January 18, 2005
    Inventor: Andrew W. Suman
  • Publication number: 20040224153
    Abstract: A composition or particle mixture (20) for equalizing radial and lateral forces at the tire/road footprint of a pneumatic tire (11) due to tire/wheel assembly imbalance, non-uniformity of the tire, temporary disturbances in the road surface, or other vibrational effects of the unsprung mass of a vehicle whereby the particle mixture (20) is inserted into the interior of the tire (11). The composition is a dry solid particle mixture (20) wherein the particles are freely flowable and non-tacky at elevated tire temperatures, the particle mixture (20) is essentially devoid of liquid material, and the particle mixture (20) comprises two or more sets of particles wherein each set consists essentially of particles of a predetermined size or size range. The particle mixture (20) exhibits a multimodal particle size distribution.
    Type: Application
    Filed: April 12, 2002
    Publication date: November 11, 2004
    Inventor: Robert D. Fogal, Sr.
  • Patent number: 6812267
    Abstract: A process for making pigmented PVDF-based powder coatings by coagulation and powder based coatings made by the process. The process involves blending a PVDF latex and a water reducible acrylic polymer and pigment dispersion, adding coagulant to precipitate solid PVDF and pigment associated by ionic interaction with acrylic polymer binder, separating solids and drying the precipitate. Also, methods for coating substrates with the powder coating and coated substrates.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: November 2, 2004
    Assignee: Solvay Solexis, Inc.
    Inventors: Shiow-Ching Lin, Michelle Kelly, Bradley Kent
  • Patent number: 6812316
    Abstract: The curable coating compositions of the invention comprise a particulate component having at least one binder component (a) which is a solid at 75° F./24° C., and an additive component (b). The curable coating compositions further comprise a crosslinking component (c) reactive with the at least one binder component (a). Additive component (b) has from 12 to 72 carbon atoms, is substantially free of any heteroatoms, is not a crystalline solid at 75° F./24° C. and comprises a mixture of two or more structures selected from the group consisting of aliphatic structures for additive component (b), aromatic-containing structures for additive component (b), cycloaliphatic-containing structures for additive component (b), and mixtures thereof, wherein at least one of the two or more structures is either a cycloaliphatic-containing structure or an aromatic-containing structure.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: November 2, 2004
    Assignee: BASF Corporation
    Inventors: Walter H. Ohrbom, David J. Law, Robert D. Weise
  • Patent number: 6797749
    Abstract: The invention provides a powder coating composition in which powder particles are an agglomerate of individual particulate components fused or bonded together into composite particles. Maximizing the amount of larger-sized uncolored component(s) gives cost advantages, and the invention allows a rapid and flexible manufacture of a range of colored powder coating compositions.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: September 28, 2004
    Assignee: International Coatings Limited
    Inventor: Andrew George Cordiner
  • Patent number: 6797222
    Abstract: A slush molding process in which the moldable thermoplastic composition powder dosed to the mold is prepared by blending ethylene carboxylic acid copolymers or ionomers with ethylene/glycidyl acrylate or methacrylate copolymer and cross-linking promoter at a temperature and for a time that does not cause significant cross-linking prior to dosing to mold, which is held for sufficient time and temperature to cause cross-linking in-situ, and optionally, other additives including release agents.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: September 28, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Karlheinz Hausmann, George K. Kodokian, George W. Prejean
  • Patent number: 6797387
    Abstract: A crosslinking agent is provided, prepared by reacting (A) an aminoplast resin; (B) a reactive urethane group-containing adduct of a polyfunctional polymer and monoisocyanate, and (C) at least one other compound having active hydrogen groups reactive with aminoplast resin (A). Compound (C) is selected from: (i) compounds having the structure (I):  wherein X is aromatic; R1, R2, and R3 each independently represents H, (cyclo)alkyl having from 1 to 12 carbon atoms, aryl, alkaryl, aralkyl, or an active hydrogen-containing group, (ii) compounds having the structure (II) or (III):  where R′ and R″ each independently represents an aromatic group or an alkyl group having 1 to 12 carbon atoms; and (iii) compounds different from (i) and (ii), having a melting point of at least 80° C. Further provided are methods for preparing the crosslinking agent, curable compositions containing the crosslinking agent, and coated substrates.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: September 28, 2004
    Assignee: PPG Industries Ohio Inc.
    Inventors: Ronald R. Ambrose, Anthony M. Chasser, Shengkui Hu, Jackie L. Smith
  • Patent number: 6784258
    Abstract: A crosslinking agent is provided, prepared by reacting (A) an aminoplast resin; (B) a reactive urethane group-containing adduct and (C) at least one other compound having active hydrogen groups reactive with aminoplast resin (A). Compound (C) is selected from: (i) compounds having the structure (I):  wherein X is aromatic; R1, R2, and R3 each independently represents H, (cyclo)alkyl having from 1 to 12 carbon atoms, aryl, alkaryl, aralkyl, or an active hydrogen-containing group, (ii) compounds having the structure (II) or (III):  where R′ and R″ each independently represents an aromatic group or an alkyl group having 1 to 12 carbon atoms; and (iii) compounds different from (i) and (ii), having a melting point of at least 80° C. Further provided are methods for preparing the crosslinking agent curable compositions containing the crosslinking agent, and coated substrates.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: August 31, 2004
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Ronald R. Ambrose, Anthony M. Chasser, Shengkui Hu, Jackie L. Smith
  • Patent number: 6762248
    Abstract: An epoxy group-containing acrylic resin for a powder coating is prepared by suspension polymerization at a temperature of at least 80° C. and a pressure of at least 2 kg/cm2 with a vinyl monomer mixture comprising from 10-60% by weight of epoxy group-containing vinyl monomers, from 10-60% by weight of alkyl (meth)acrylate(s), and other vinyl monomer(s). The epoxy group-containing acrylic resin particles possess the following characteristics: i) a weight average molecular weight of from 3000-20,000; ii) an epoxy equivalent of from 350-1200 g/eq; iii) 1000 ppm or less of volatile components; iv) a mean particle diameter of from 80-800 &mgr;m; v) at least 95% by weight of the particles having a long diameter R:short diameter r ratio within the parameters 1<R/r<1.2; and vi) 5% by weight or less of the particles having a long diameter R of less than 62 &mgr;m and 5% by weight or less of particles having a short diameter r of more than 1000 &mgr;m.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: July 13, 2004
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Yoko Harada, Motoshi Inagaki, Koji Shimizu, Noriyuki Tajiri
  • Patent number: 6759470
    Abstract: There is provided a resin powder for molding which comprises 35 to 98% by weight of a polytetrafluoroethylene powder having an average particle size of not more than 120 &mgr;m, 35 to 2% by weight of a heat resistant aromatic polyoxybenzoyl ester resin powder subjected to water repelling treatment and 30 to 0% by weight of an inorganic filler, has an apparent density of not less than 0.6 g/cm3 and an average particle size of not more than 800 &mgr;m, and provides a molded article having an elongation at break of not less than 20%. The resin powder for molding is free from separation of a filler, has excellent flowability and apparent density which are important characteristics in handling the powder, and can provide a PTFE molded article having a high elongation which has not been obtained.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: July 6, 2004
    Assignee: Daikin Industries, Ltd.
    Inventors: Masamichi Sukegawa, Michio Asano
  • Patent number: 6756072
    Abstract: Multicomponent coating materials, adhesives and sealing compounds comprising a (meth)acrylate (A) containing, based on (A), up to 90% by weight of hydroxyl-containing monomers in copolymerized form, of which (a1) from 20-90% by weight, based on (A), are 4-hydroxybutyl (meth)acrylate and/or 2-alkylpropane-1,3-diol mono(meth)acrylate, and (a2) from 0-40% by weight based on (A), are other hydroxyl-containing monomers; and (B) an adduct preparable from (b1) a diisocyanate, and (b2) a compound of the general formula I having an isocyanate-reactive group: wherein R1 and R2 are hydrogen or alkyl radicals, X and Y are oxygen, sulfur or >N—R6 where R6 is alkyl radical or aryl radical, R3 is alkylene radical and R4 and R5 are hydrogen, isocyanate-reactive groups or radicals R6; where R4, R5 or R6 contains an isocyanate-reactive group or R4 or R5 is an isocyanate-reactive functional group, and where R4, R5 or R6, where present, contain no isocyanate-reactive groups and the molar ratio of isocy
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: June 29, 2004
    Assignee: BASF Coatings AG
    Inventors: Hubert Baumgart, Heinz-Peter Rink, Simone Jurczik, Edeltraud Hagemeister
  • Patent number: 6720079
    Abstract: The invention concerns a polyester bearing tertiary carboxyl groups, characterised in that it consists of: (a) 8.1 to 35 moles of an aliphatic or cycloaliphatic of a polyol; (b) 9.1 to 36 moles of an aliphatic, cycloaliphatic or aromatic polycarboxylic acid; (c) 1.6 to 2.8 moles of an aliphatic, cycloaliphatic or aromatic compound comprising a tertiary carboxyl group and either a primary or secondary carboxyl group, or a primary or secondary hydroxyl group. Said polyester is prepared in several steps, the first steps consisting in the preparation of a polyester by condensation between (a) an aliphatic or cycloaliphatic polyol, and (b) an aliphatic, cycloaliphatic or aromatic polycarboxylic acid, the final step consisting in condensing said polyester with (c) an aliphatic, cycloaliphatic or aromatic compound comprising a tertiary carboxyl group and either a primary or secondary carboxyl group, or a primary or secondary hydroxyl group.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: April 13, 2004
    Assignee: UCB, S.A.
    Inventors: Luc Moens, Kris Buysens, Daniel Maetens
  • Patent number: 6713182
    Abstract: Provided is a crosslinking agent which is the ungelled reaction product of a polyester polyol and an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The polyester polyol is the reaction product of a cycloaliphatic polyol and a cyclic polycarboxylic acid or anhydride. The crosslinking agent is essentially free of hydroxyl functionality and has a glass transition temperature of at least 10° C. Further provided is a powder coating composition including a solid particulate film-forming mixture of a polymer containing reactive functional groups and having a Tg of at least 30° C., and the crosslinking agent. Additionally provided is a multi-layer composite coating composition having a basecoat layer deposited from a basecoat film-forming composition and a topcoat over the basecoat deposited from the previously described powder coating composition. Coated substrates are also provided.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: March 30, 2004
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Ronald R. Ambrose, Anthony M. Chasser, Shengkui Hu, Jackie L. Smith
  • Patent number: 6710136
    Abstract: A matt polyurethane powder coating material comprises: A) 3 to 25% by weight of a polyurea; B) 35 to 75% by weight of at least one polyester synthesized from polyols and 15-100 mol. % of succinic acid or its anhydride, having an OH number of 20-250 mg KOH/g; C) 7 to 25% by weight of at least one curing agent of a blocked polyisocyanate, isocyanurate, uretdione or a combination thereof having a functionality of at least 2; and D) 1 to 50% by weight of auxiliaries and additives; wherein from 0.6 to 1.2 NCO groups are available per OH group of the resin.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: March 23, 2004
    Assignee: Degussa AG
    Inventors: Werner Grenda, Joern Volker Weiss
  • 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
  • Patent number: 6660828
    Abstract: The polymer of the present invention is derived from cyclic ether monomers, dioxane, dioxalane or trioxane and contains both pendant Rf fluoro groups as well as polar groups. These polymers have good wetting, or flow, or leveling properties. They can be reacted with other monomers, such as in the preparation of polyesters, and can be used in waxes, polishes and coatings.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: December 9, 2003
    Assignee: Omnova Solutions Inc.
    Inventors: Richard R. Thomas, Robert E. Medsker, Charles M. Kausch, Daniel D. Woodland, Gary L. Jialanella, Raymond J. Weinert, Jane E. Leising, James E. Robbins, Brian T. Cartwright
  • Patent number: 6624229
    Abstract: The present invention relates to a powder coating material which contains preferably from 0.05 to 5% by weight, preferably from 0.5 to 2% by weight, of at least one polyethylene wax distributed homogeneously within the powder coating material.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: September 23, 2003
    Assignee: BASF Coatings AG
    Inventors: Helmut Riestenpatt, Rolf Boysen, Birgit Perdun
  • Publication number: 20030170455
    Abstract: To provide a powder coating composition being capable of forming a coating film which has good pigment dispersibility, is excellent in weather resistance, film forming ability, appearance and stain-proofing property and, when used for PCM, is difficult to cause cracks because of its particularly excellent bending resistance at the time of bending of a metal plate. The powder coating composition comprises a powder which contains 100 parts by weight of a vinylidene fluoride copolymer having a melting point of not higher than 150° C., a crystallinity of not higher than 35% and a weight average molecular weight (Mw) of 1×104 to 5×105 and 10 to 400 parts by weight of a methyl methacrylate copolymer having a glass transition temperature of not higher than 110° C. and a weight average molecular weight of 1×104 to 5×105; an average particle size of particles constituting the powder being from 1 to 100 &mgr;m and an apparent density of the powder being from 0.2 to 1 g/ml.
    Type: Application
    Filed: February 24, 2003
    Publication date: September 11, 2003
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Nobuhiko Tsuda, Ryuzi Iwakiri
  • Patent number: 6616979
    Abstract: Provided are low temperature curing thermosetting epoxy powder coating compositions comprising at least one non-crystalline epoxy resin, at least one crystalline epoxy resin, a curing agent, and a cure catalyst. Coatings made from such powder compositions exhibit a substantial reduction in bubble entrapment, enough to prevent a visible haze from forming in the coating, when cured at low temperatures demanded by brass substrates.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: September 9, 2003
    Assignee: Rohm and Haas Company
    Inventors: William G. Ruth, Stacy L. Greth, Carryll A. Seelig, Dean A. Schreffler
  • Patent number: 6613840
    Abstract: A resin composition for a powder coating, which comprises a non-crystalline polyester resin (A) having a carboxyl group, a crystalline polyester polyurethane resin (B) and a curing agent (C) made of a compound having a functional group reactable with the carboxyl group as an essential component, yields a powder coating which is highly suitable for practical use, the powder coating having superior storage stability (blocking resistance) and forming a coating film having superior smoothness under low temperature curing conditions.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: September 2, 2003
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Hiroyuki Itou, Tetsuro Agawa
  • Patent number: 6608128
    Abstract: Polyvinyl alcohol compositions in the form of an aqueous solution are disclosed, where the aqueous polyvinyl alcohol compositions include: (i) polyvinyl alcohol; (ii) at least one polyaldehyde having at least 3 carbon atoms and being masked completely as a water-soluble hydrogen sulfite adduct; and (iii) at least one compound which is acidic in water. The aqueous polyvinyl alcohol compositions are suitable as adhesives and for use in cast films.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: August 19, 2003
    Assignee: Kuraray Specialities Europe GmbH
    Inventors: Martin Jakob, Richard Gutte
  • Patent number: 6599992
    Abstract: The present invention provides a powder coating composition. The powder coating composition includes a polyester resin having both hydroxyl and carboxyl groups, a curing agent for the carboxyl groups of the polyester resin, and an uretdione hardener which reacts with the hydroxyl groups.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: July 29, 2003
    Assignee: Reichhold, Inc.
    Inventors: Christoph Alfred Brunmair, Rudolf Leopold Kaiser
  • Patent number: 6596790
    Abstract: A process for making pigmented PVDF-based powder coatings by coagulation and powder based coatings made by the process. The process involves blending a PVDF latex and a water reducible acrylic polymer and pigment dispersion, adding coagulant to precipitate solid PVDF and pigment associated by ionic interaction with acrylic polymer binder, separating solids and drying the precipitate. Also, methods for coating substrates with the powder coating and coated substrates.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: July 22, 2003
    Assignee: Solvay Solexis, Inc.
    Inventors: Shiow-Ching Lin, Michelle Kelly, Bradley Kent