Electrostatic Spray Patents (Class 524/902)
  • Patent number: 7972680
    Abstract: To realize a resin composition which enables formation of a film having excellent film formability and bending resistance and having a small retardation. A resin composition of the present invention comprises: an acrylic resin as a main component; and organic fine particles whose average particle diameter ranges from 0.01 ?m to 1 ?m, wherein a glass transition temperature of the acrylic resin ranges from 110° C. to 200° C., and each of the organic fine particles has a structural unit of a vinyl cyanide monomer and a structural unit of an aromatic vinyl monomer.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: July 5, 2011
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kenichi Ueda, Shigeo Otome, Akio Naka
  • Patent number: 7550419
    Abstract: This invention relates to a composition useful as an oral care composition comprising an organophosphate material, additional oral care composition ingredients, for example, a surfactant agent, and optionally an abrasive agent.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: June 23, 2009
    Assignee: Rhodia Inc.
    Inventors: Tobias Johannes Fütterer, Lawrence Alan Hough, Robert Lee Reierson
  • Patent number: 6936652
    Abstract: Thermoplastic resin composition are provided that comprise a thermoplastic resin and an amount of antioxidant effective to increase the adhesion of paint to an article made from the composition. Also provided are methods to improve the paint adhesion of articles wherein the articles have been subjected to a temperature of at least about 330° F. for period of at least about 10 minutes. In a preferred embodiment, the antioxidant, also known as a stabilizer, or mixture of stabilizers is selected from the group consisting of the phenolic antioxidants, the 3-arylbenzofuranones, the hindered amine stabilizers, the ultraviolet light absorbers, the alkaline metal salts of fatty acids, the hydrotalcites, the epoxydized soybean oils, the hydroxylamines, the tertiary amine oxides, thermal reaction products of tertiary amine oxides, the thiosynergists, and mixture containing at least one of the foregoing.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: August 30, 2005
    Assignee: General Electric Company
    Inventors: Antoinette C. M. van Bennekom, Josephus Gerardus M. van Gisbergen, Sai-Pei Ting
  • Patent number: 6162545
    Abstract: An agent for providing an electrostatic coating property and improving the water resistance of a coating film comprises 100 weight parts of an aromatic ring-containing polyetheresteramide (A) derived from a polyamide having carboxyl groups at both ends and having a number average molecular weight of 500 to 5,000 and an alkylene oxide adduct of bisphenols having a number average molecular weight of 1,600 to 3,000; and 5 to 100 weight parts of a vinyl copolymer comprising as essential constituent units a vinyl monomer (b1) having a sulfonic acid (or sulfonate) group and at least one monomer (b2) selected from vinyl monomers having a functional group that is reactive with (A).
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: December 19, 2000
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Sanyo Chemical Industries, Ltd.
    Inventors: Shiro Kamiyama, Katsumi Kohama, Hisashi Masuda, Takeo Okada, Eiji Inada
  • Patent number: 5965213
    Abstract: Disclosed is an aqueous dispersion of a transparent powder coating consisting of a solid powder component and an aqueous component. The solid powder component includes at least one epoxy group-containing binder, at least one crosslinking agent, and optionally catalysts, adjuvants, or additives typical for transparent powder coatings. The binder contains 30-45% glycidyl-containing monomers and optionally vinylaromatic compounds such as styrene. The crosslinking agent is preferably a straight-chain aliphatic dicarboxylic acid and/or a carboxy-functional polyester. The aqueous component includes at least one nonionic thickener and optional materials such as catalysts, adjuvants, and/or other such materials. The nonionic thickener is preferably a nonionic associative thickener. The invention also provides a process for preparing the aqueous dispersion of the invention and a process for coating a vehicle body with the aqueous dispersion of the invention.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: October 12, 1999
    Assignee: BASF Coatings AG
    Inventors: Lawrence Sacharski, Joachim Woltering, Peter Clark, Heinrich Wonnemann
  • Patent number: 5252399
    Abstract: An aluminum member provided with a weather-resistant coat having good corrosion resistance, weather resistance, paintability, etc., the coat having (a) a primer layer of an epoxy polyester-based, hybrid powder coating composition formed on an aluminum member; (b) a base coat layer of a metallic acrylic coating composition formed on the primer layer; and (c) a barrier coat layer of a high solid-type, clear, acrylic coating composition formed on the base coat layer.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: October 12, 1993
    Assignee: Hitachi Metal Ltd.
    Inventors: Seiji Hirata, Nobuhiko Katagiri, Ryouji Iijima
  • Patent number: 4962139
    Abstract: The present invention is directed to improved conductive primer compositions and methods. In the improved methods aspect of the present invention, a non-conductive polymeric component is precoated with a primer to render it electroconductive in preparation for electrocoating. Next, the primed polymeric comonent is assembled with a conductive metallic component to form a multi-material workpiece. Finally, the formed workpiece is submerged in an electrocoat bath for simultaneously electrocoating both the primed polymeric component and the conductive metallic component. In some preferred embodiments, the workpiece may be an automobile body. In the improved electroconductive primer compositions aspect of the present invention, such compositions comprise a dispersion of approximately 70% to 90% of a polymeric resinous which will cure to form a film, approximately 10% to 30% of a conductive carbon pigment, in some embodiments approximately 0.25 to 0.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: October 9, 1990
    Assignee: W. C. Richards Company
    Inventor: Salvador R. Lo
  • Patent number: 4777213
    Abstract: Promoters for a crosslinking reaction involved in the curing of a system comprising crosslinkable polymers are bound to polymeric microparticles having a diameter of about 0.01 to 6 microns prepared by polymerizing a mixture of ethylenically unsaturated monomers. The microparticles carrying the crosslinking reaction promoter may be incorporated to coating compositions, printing inks, sealants, adhesives and other polymeric products in place of conventional crosslinking reaction promoters.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: October 11, 1988
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Kazunori Kanda, Shinichi Ishikura, Keizou Ishii, Akio Kashihara
  • Patent number: 4752532
    Abstract: A primer composition primarily for the end of line repair of automobiles and trucks that has excellent adhesion to all types of substrates such as metal and plastics, and contains solvents and a film forming binder and pigments; wherein the binder contains about(1) 50-85% by weight, based on the weight of the binder, of a polyester of an alkylene diol, trimethylylol alkane, an aromatic dicarboxylic acid and a saturated aliphatic dicarboxylic acid having 3-10 carbon atoms wherein the hydroxyl groups of the polyester are esterified with an acid anhydride; the polyester copolymer has an acid no. of about 30-100, a hydroxyl number of about 50-120, a number average molecular weight of about 500-3,000 and a weight average molecular weight of about 1,000-6,000; and(2) 15-50% by weight, based on the weight of binder, of a methylated and butylated melamine formaldehyde agent having a degree of polymerization of about 1.5-2.0.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: June 21, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Zita Starka
  • Patent number: 4739006
    Abstract: According to one aspect of the present invention, an improved method for preparing acrylic copolymer resins is provided in which the polymerization solvent comprises an alkanoic acid alkyl ester having a total of from about 7 to 18 carbon atoms per molecule. The monomers comprise hydroxy-substituted alkyl (meth)acrylates, and non-hydroxy substituted alkyl (meth)acrylates, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in high solids acrylic coatings suitable for electrostatic spraying. The polymerization solvent can remain in the resin to become the solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides surprisingly improved electrical resistivity and solvency and decreased surface tensions over prior art polymerization solvents.
    Type: Grant
    Filed: January 16, 1987
    Date of Patent: April 19, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventor: Constantine J. Bouboulis
  • Patent number: 4681815
    Abstract: A coating composition based on a binder comprising a major portion of acrylic resin and a minor portion of polyester oligomer, suitable for application to metal and non-metal substrates.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: July 21, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Andrew F. Rutkiewic, Clifford H. Strolle
  • Patent number: 4638031
    Abstract: According to one aspect of the present invention, an improved method for preparing acrylic copolymer resins is provided in which the polymerization solvent comprises an alkanoic acid alkyl ester having a total of from about 7 to 18 carbon atoms per molecule. The monomers comprise hydroxy-substituted alkyl (meth)acrylates, and non-hydroxy substituted alkyl (meth)acrylates, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in high solids acrylic coatings suitable for electrostatic spraying. The polymerization solvent can remain in the resin to become the solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides surprisingly improved electrical resistivity and solvency and decreased surface tensions over prior art polymerization solvents.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: January 20, 1987
    Assignee: Exxon Research & Engineering Co.
    Inventor: Constantine J. Bouboulis
  • Patent number: 4624974
    Abstract: The invention relates to water-dispersible binders for cationic electro-dip paints which are reaction products of(A) low molecular weight epoxy resins containing aromatic groups and having an epoxide equivalent weight under 375,(B) aliphatic and/or alicyclic poly-functional alcohols and/or carboxylic acids having a molecular weight under 350,(C) elasticized polyphenols having a molecular weight over 350 and(D) primary and/or secondary amines and/or their salts, the reaction product of A and B having a content of aromatic groups, calculated as phenylene group, of 10-45%.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: November 25, 1986
    Assignee: BASF Farben und Fasern Aktiengesellschaft
    Inventors: Michael Geist, Gunther Ott, Georg Schon
  • Patent number: 4591533
    Abstract: A coating composition that is used primarily as a clear finish over a colored or pigmented finish that are applied to automobile and truck bodies; the composition contains as the film forming binder(a) an acrylic polymer(b) a self stabilized dispersed resin formed by polymerizing in solution the following constituents:(1) an acrylic solution polymer,(2) monomers of alkyl methacrylate or acrylate and hydroxy ethyl acrylate or methacrylate, wherein either the acrylic solution polymer contains post reacted glycidyl methacrylate or acrylate or the monomers contain glycidyl methacrylate or acrylate, and(c) an alkylated melamine formaldehyde crosslinking agent.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: May 27, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph A. Antonelli, Isidor Hazan
  • Patent number: 4555412
    Abstract: A process is provided for applying a coating to a substrate by bringing the substrate into contact with a liquid aqueous coating composition comprising a solid powdered epoxy group-containing compound having a number average molecular weight of at least 1,000, an epoxy equivalent weight of 450-7,500 and an average particle size of 0.5-35 .mu.m, dispersed in an aqueous medium containing an ionized polyamino compound having primary or secondary groups, the ratio of the number of reactive groups of the polyamino compound to the number of epoxy groups of the epoxy compound being at least 0.4. The coating composition is applied to the substrate at a temperature of 5.degree.-65.degree. C. and the resulting coating layer is cured at a temperature of 70.degree.-220.degree. C. This invention also relates to the liquid aqueous coating composition to be used in said process.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: November 26, 1985
    Assignee: Akzo nv
    Inventors: Gerhard Gunter, Hartmut Haeufler
  • Patent number: 4532294
    Abstract: According to one aspect of the present invention, an improved method for preparing acrylic copolymer resins is provided in which the polymerization solvent comprises an alkanoic acid alkyl ester having a total of from about 7 to 12 carbon atoms per molecule. The monomers comprise hydroxy-substituted alkyl (meth)acrylates, and non-hydroxy substituted alkyl (meth)acrylates, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in high solids acrylic coatings suitable for electrostatic spraying. The polymerization solvent can remain in the resin to become the solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides surprisingly improved electrical resistivity and solvency and decreased surface tensions over prior art polymerization solvents.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: July 30, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Constantine J. Bouboulis
  • Patent number: 4427805
    Abstract: The present invention is directed to thermosetting binder compositions for coating, comprising:(I)(1) a non-acidic resinous compound, saturated, molecular weight at least 900, alcoholic hydroxyl content at least 0.2 eq/100 g;(2) a cross-linking agent comprising a nonacidic polyester of a polycarboxylic acid, having more than one beta-hydroxyl ester group per molecule, at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and(II) a curing catalyst comprising a transesterification-promoting metal compound which is insoluble in liquid hydrocarbons.These compositions can be used in solvent-based lacquers and paints, in coating powders, aqueous powder suspensions, in aqueous coating compositions for cathodic electrodeposition; for aqueous compositions component (1) (1) is preferably an epoxy resin/amine adduct.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: January 24, 1984
    Assignee: Shell Oil Company
    Inventors: Petrus G. Kooijmans, Werner T. Raudenbusch, Adrianus M. C. Van Steenis, Wolfgang Kunze, Josepha M. E. Seelen-Kruijssen
  • Patent number: 4383055
    Abstract: Preparation of heat-curable, water-dilutable coating compositions based on (A) epoxy resins free from amino groups, (B) an aqueous dispersion or solution of saturated polyester resins or the modification products thereof with oils, (C) organic cross-linking agents and optionally (D) pigments and/or conventional adjuvants, in specific proportions, these components being processed together in one or more stages, while being comminuted from their original particle size, to form a homogeneous coating composition which has a particle size of less than 100 .mu.m, and the use of the coating compositions thus obtained as coating agents, particularly for coating metal substrates, by the use of current-free methods of application or electrostatic spraying.
    Type: Grant
    Filed: October 7, 1981
    Date of Patent: May 10, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Johannes, Helmut Durr, Dieter Plath, Diedrich Schneider, Klaus Esser
  • Patent number: 4362847
    Abstract: The present invention is directed to thermosetting binder compositions for coating, comprising:(I) (1) A non-acidic resinous compound, saturated, molecular weight at least 900, alcoholic hydroxyl content at least 0.2 eq/100 g;(2) a cross-linking agent comprising a non-acidic polyester of a polycarboxylic acid, having more than one beta-hydroxyl ester group per molecule, at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and(II) a curing catalyst comprising a transesterification-promoting metal compound which is insoluble in liquid hydrocarbons.These compositions can be used in solvent-based lacquers and paints, in coating powders, aqueous powder suspensions, in aqueous coating compositions for cathodic electrodeposition; for aqueous compositions component (I) (1) is preferably an epoxy resin/amine adduct.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: December 7, 1982
    Assignee: Shell Oil Company
    Inventors: Petrus G. Kooijmans, Werner T. Raudenbusch, Adrianus M. C. Van Steenis, Wolfgang Kunze, Josepha M. E. Seelen-Kruijssen