Powdered Coating Composition Patents (Class 525/934)
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Patent number: 6180727Abstract: There is provided a curing agent composition, a method for making a curing agent composition, two component curable epoxy resin compositions, methods of their manufacture, and the different cured products thereof. The curing agent comprises the reaction product of a a) phenolic acid substituted with at least one carboxyl group and at least one hydrocarbyl group having at least 1 carbon atom; b) a polyepoxide compound; c) a polyamine compound having at least two primary amine groups; and d) a monoglycidyl capping agent. The curing agents contain secondary amine groups, yet are reactive enough to cure epoxy resins without the necessity for external catalysts/accelerators, at a wide range of curing temperatures and are immediately compatible with a standard diglycidyl ether of Bisphenol-A epoxy resins.Type: GrantFiled: December 31, 1997Date of Patent: January 30, 2001Assignee: Shell Oil CompanyInventor: Kalyan Ghosh
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Patent number: 6169158Abstract: The present invention is directed to a polyglycidyl compound having on average more than two, preferably more than two and a half, particularly preferably more than three, glycidyl groups per molecule and a Tg value (determined by DSC, heating rate=20° C./min) higher than 20° C.Type: GrantFiled: April 23, 1999Date of Patent: January 2, 2001Assignee: Vantico, Inc.Inventors: Christoph Rickert, Hugh Stephen Laver
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Patent number: 6165558Abstract: A moulding powder which is curable with the application of heat and pressure, comprising a mechanical mixture consisting of: a) a powdered epoxy compound containing on average more than one epoxy group in the molecule and having a softening point of above 60.degree. C., b) a powdered aliphatic or N-heterocyclic amine or a powdered amino group-containing adduct based on an aliphatic, cycloaliphatic, araliphatic or N-heterocyclic amine containing on average more than one amino group in the molecule and having a melting point or softening point of above 60.degree. C. and, optionally, c) customary additives for moulding powders, the particles of a) and b) being smaller than 200 .mu.m, is excellently suited for the preparation of coatings on heat-sensitive substrates and is used in particular in powder coating.Type: GrantFiled: July 16, 1998Date of Patent: December 26, 2000Assignee: Vantico, Inc.Inventor: Hildegard Schneider
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Patent number: 6153672Abstract: A process for preparing a tris-lactam crosslinking agent, tris-pyrrolidonyl triazine, from N,N',N"-tris(4-chlorobutyryl)melamine by treatment of the chlorobutyryl derivative with a base such as sodium or potassium carbonate to effect intramolecular cyclization to the tris-lactam. A curable composition comprised of tris-pyrrolidonyl triazine as the crosslinking agent and a hydroxyfunctional or aminofunctional material as a resin. Thick films with no pinholes are prepared from the curable compositions using powder coating techniques.Type: GrantFiled: January 7, 1993Date of Patent: November 28, 2000Assignee: Cytec Technology Corp.Inventors: Ram B. Gupta, Robert G. Lees
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Patent number: 6143838Abstract: A linear or branched polyglycidylester resin produced by reacting a carboxyl functional polyester resin with an excess epihalohydrin in the presence of a suitable base, wherein the carboxyl functional polyester resin is produced by reacting at a temperature of from 100 to 240.degree. C. at least one dicarboxylic acid compound of the formula ##STR1## wherein x.gtoreq.1 and wherein R.sub.1 and R.sub.2 each represent an alkyl group having from 1 to 4 carbon atoms or wherein R.sub.1 and R.sub.2 form together with the group .about.CH--(CH.sub.2).sub.x --CH.about. a cycloalkylgroup, with at least one diol compound comprising two aliphatic hydroxyl groups, wherein each hydroxyl group independently is a primary or a secondary hydroxyl group, and wherein the number of carboxylic acid groups and anhydrides thereof exceeds the number of hydroxyl groups. The reaction continues until essentially all the hydroxyl groups initially present in the reaction mixture have been reacted.Type: GrantFiled: March 25, 1998Date of Patent: November 7, 2000Assignee: Shell Oil CompanyInventors: Ronald Petrus Clemens Van Gaalen, Petrus Gerardus Kooijmans, Eric Johannes Vos
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Patent number: 6140419Abstract: The invention pertains to a powder lacquer composition containing epoxy-rtive polymers as binders and epoxy-functional siloxane resins as hardeners as well as additives, if required, such as pigments and/or fillers and/or thermal stabilizers and/or additives such as flow-promoting agents and de-gassing agents, whereby the hardener is a compound which is prepared by the hydrolysis and condensation of an organo-silane R.sub.2 SiX.sub.2 of an epoxy-functionalized silane.Type: GrantFiled: January 15, 1999Date of Patent: October 31, 2000Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.Inventors: Christine Barglik-Chory, Karl-Heinz Haas
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Patent number: 6133384Abstract: An epoxy coating powder composition and a method for controlling the denseness of cured wrinkle finish patterns are provided by the use of a curing agent mixture comprising a blocked Lewis acid, methylenedisalicylic acid and a ring-substituted homolog thereof having the formula ##STR1## wherein x and y are from 1 to 3, and R.sup.1 and R.sup.2 are, independently, hydrogen, alkyl groups having from 1 to 20 carbon atoms, aryl groups having from 6 to 10 carbon atoms, or aryl-substituted methylene groups; with the proviso that when x=y=3, R.sup.1 and R.sup.2 .noteq.hydrogen;wherein the ratio of methylene disalicylic acid and the ring-substituted homolog is from about 50:50 to about 2:98 by weight.Type: GrantFiled: February 22, 1999Date of Patent: October 17, 2000Assignee: Morton International Inc.Inventors: Owen H. Decker, Charles P. Tarnoski
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Patent number: 6117952Abstract: A powder coating composition comprising(A) a solid epoxy resin mixture that comprises at least one epoxy resin component (A1) and one epoxy resin component (A2) and(B) a free-carboxyl-group-containing polyester in an amount sufficient for the full cure of the composition,in which the epoxy resin component (A1) consists of one or more epoxy resins and has overall a mean epoxy functionality that is greater than 2,wherein the epoxy resin component (A2) consists of one or more advanced epoxy resins each of which has a mean epoxy functionality of at least 1.2 but less than 1.95 and is the product of a reaction in which (i) at least one diglycidyl compound is simultaneously reacted with (ii) at least one bisphenol compound and (iii) at least one monophenol as starting materials, and the difference between the mean epoxy functionality of the epoxy resin mixture (A) and the mean epoxy functionality of component (A2) of the mixture is at least 0.05 but less than 0.8.Type: GrantFiled: February 6, 1998Date of Patent: September 12, 2000Assignee: Ciba Specialty Chemicals Corp.Inventors: Jurgen Finter, Isabelle Frischinger, Christine Poget
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Patent number: 6107369Abstract: A process for preparing a tris-lactam crosslinking agent, tris-pyrrolidonyl triazine, from N,N',N"-tris(4-chlorobutyryl)melamine by treatment of the chlorobutyryl derivative with a base such as sodium or potassium carbonate to effect intramolecular cyclization to the tris-lactam. A curable composition comprised of tris-pyrrolidonyl triazine as the crosslinking agent and a hydroxyfunctional or aminofunctinoal material as a resin. Thick films with no pinholes are prepared from the curable compositions using powder coating techniques.Type: GrantFiled: June 6, 1995Date of Patent: August 22, 2000Assignee: Cytec Technology Corp.Inventors: R. B. Gupta, Robert G. Lees
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Patent number: 6100349Abstract: Proposed is a thermosetting powder coating composition comprising a mixture of particles reactive towards one another and a catalyst, with a portion of the reactive particles comprising a polymer reacting with epoxy to form ester forming or ether forming groups, while another portion comprises an at least bifunctional cross-linking agent which contains 2-oxo-1,3-dioxolan-4-yl groups, hereinafter referred to as cyclocarbonate groups, and, optionally, epoxy groups, with both the polymer reacting with epoxy to form ester forming and/or ether forming groups and the cross-linking agent being obtained by means of a non-vinylic addition and/or polymerization process. The catalyst used as ring opener for the cyclocarbonate groups is present in a quantity of 0.01 to 10, preferably 0.1 to 5, parts by weight per 100 parts by weight of the mixture of particles reactive towards one another. The quantity of epoxy oxygen present in the cross-linking agent after CO.sub.2 unblocking preferably is at least 0.4 wt. %.Type: GrantFiled: July 1, 1998Date of Patent: August 8, 2000Assignee: Akzo Nobel N.V.Inventors: Martinus Adrianus Anthonius Maria Koenraadt, Arie Noomen, Keimpe Jan Van Den Berg, Huig Klinkenberg, Klaus Hobel
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Patent number: 6090890Abstract: Resin composition for powder paints, that has an excellent curability and excellent electrostatic properties (wraparound) and that provides cured coatings having an excellent appearance, weathering resistance, and mechanical properties, comprising (A) epoxy-functional branched organopolysiloxane and (B) a compound bearing a functional group reactive with the epoxy group, wherein the component (A)/component (B) weight ratio is from 2/98 to 98/2, or comprising (A) epoxy-functional branched organopolysiloxane, (3) a compound bearing a functional group reactive with the epoxy group, and (C) a compound bearing a functional group reactive with the functional group in component (B), wherein the component (A)/(component (B)+component (C)) weight ratio is from 2/98 to 98/2.Type: GrantFiled: August 13, 1996Date of Patent: July 18, 2000Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Ichiro Murakami, Shoji Akamatsu, Tetsuro Agawa
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Patent number: 6084009Abstract: A thermosetting powder paint composition comprising:(A) a (meth)acrylic copolymer having glycidyl groups;(B) a polybasic carboxylic acid and/or polybasic carboxylic anhydride; and(C) particles having a core/shell structure each comprising a core having Tg of 20.degree. C. or below, the core being covered at least partially with a shell having Tg of 40.degree. C. or above, and said shell having no glycidyl group.The paint composition is excellent in weather resistance as well as in impact resistance and chipping resistance.Type: GrantFiled: April 23, 1997Date of Patent: July 4, 2000Assignee: Mitsui Chemicals, Inc.Inventors: Mitsuyuki Mizoguchi, Yoshiro Fuseya, Yoshihiro Fujita, Yukiatsu Ishino, Masashi Seki, Takahisa Miyawaki
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Patent number: 6075099Abstract: A curable epoxidized polyester-based composition useful for powder coatings application is provided by epoxidizing a polyester having a melting point of at least 90.degree. C. and a viscosity of at most 50 Poise@ 200.degree. C., where such polyester is a polyester prepared by reacting (I) a tetrahydrophthalic acid or anhydride, (ii) at least one cycloaliphatic polyol, (iii) at least one saturated polycarboxylic acid, and (iv) optionally at least one other alcohol under conditions effective to obtain a solid polyester having a melting point of at least 90.degree. C. Curable coating powder is obtained containing the epoxidized polyester and a solid carboxylic acid curing agent having an acid equivalent weight within the range of from about 100 to about 1500.Type: GrantFiled: February 6, 1996Date of Patent: June 13, 2000Assignee: Shell Oil CompanyInventors: Charles John Stark, Edward John Marx
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Patent number: 6068797Abstract: A method of preparing a shaped article having a photochromic coating thereon, and curable photochromic powder coating compositions are described. The method includes: applying at least one curable powder coating composition to at least a portion of the interior of a mold, e.g., a lens mold, wherein at least one of the applied powder coating compositions includes a photochromic amount of photochromic material; curing at least partially the applied photochromic powder coating; charging a polymerizable organic casting composition into the mold; polymerizing the casting composition; and removing a shaped article having a photochromic coating on at least a portion of its surface from the mold.Type: GrantFiled: December 11, 1998Date of Patent: May 30, 2000Assignee: PPG Industries Ohio, Inc.Inventor: Robin L. Hunt
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Patent number: 6048949Abstract: Low temperature curable unsaturated polyester powder coatings suited for heat sensitive substrates with improved surface cure through incorporation of active hydrogen groups into the unsaturated polyester molecule. The unsaturated polyesters containing active hydrogens are derived from ethylenically unsaturated polyfunctional carboxylic acids and active hydrogen containing polyols. Full cure on the surface is obtained without the need for polyethylene waxes or oxygen-reactive curative resins that are commonly employed in order to prevent atmospheric oxygen from inhibiting the free-radical induced cure at the surface of the coating.Type: GrantFiled: May 11, 1998Date of Patent: April 11, 2000Assignee: Morton International, Inc.Inventors: Jeno Muthiah, Joseph J. Kozlowski, Navin B. Shah, Paul H. Radcliffe, Edward G. Nicholl
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Patent number: 6046284Abstract: A modified phenolic hydroxyl-containing resin having a low free difunctional phenol content and represented by general formula (1); a solid epoxy resin having an epoxy equivalent of 450 to 2,500 g/eq and prepared by epoxidizing the above resin; and another solid epoxy resin having an epoxy equivalent of 1,500 to 60,000 g/eq and a number-average molecular weight of 3,000 to 15,000 and prepared by reacting the above epoxy resin with a difunctional phenol compound. Resin compositions containing these resins have many applications as powder coatings and can paints. In formula (1), X represents a residue of a difunctional phenol compounds; X's may be the same or different; and n is the number of repeating units and is an integer of 0 or above.Type: GrantFiled: February 27, 1998Date of Patent: April 4, 2000Assignee: Tohto Kasei Co LtdInventors: Shuya Shinohara, Nobuhisa Saitoh, Yasuyuki Takeda, Masayoshi Hanafusa, Hidenori Nozawa
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Patent number: 6034178Abstract: A coating powder for producing a high temperature resistant coating has a resin system which comprises (A) between about 50 and about 93 wt % based on total of (A) plus (B) of a silicone resin and (B) between about 7 and about 50 wt % based on total weight of (A) plus (B) of a polyhydroxyl component. The silicone resin (A) of the coating powder has organic substitutents selected from the group consisting of phenyl, methyl, C.sub.2 through C.sub.6 alkyl and mixtures thereof. The silicone resin has a viscosity of between about 500 and about 10,000 cps at 150.degree. C., a condensable hydroxyl content of between about 2 and about 4.5 wt %, and a glass transition temperature (T.sub.g) of about 55.degree. C. or above. The silicone resin preferably contains about 0.2% or less of organic solvents.Type: GrantFiled: September 30, 1998Date of Patent: March 7, 2000Assignee: Morton International, Inc.Inventors: Owen H. Decker, Charles P. Tarnoski
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Patent number: 6011089Abstract: Processes for spray drying water-soluble and water-swellable vinyl-addition polymer-containing dispersions, emulsions and microemulsions to obtain substantially dry water-soluble or water-swellable polymer particles, compositions of substantially dry water-soluble or water-swellable polymer particles, methods of agglomerating spray-dried polymer particles, and methods of using spray-dried polymer particles and agglomerates in water-treating, mining, paper, food processing, soil conditioning, solution thickening, biotechnological, and oil recovery applications are disclosed.Type: GrantFiled: June 21, 1996Date of Patent: January 4, 2000Assignee: Cytec Technology Corp.Inventors: William Bloor Davies, John Edward Healy, Gary Kaui Lani Miller, Joseph J. Kozakiewicz, Roderick G. Ryles
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Patent number: 5977253Abstract: Disclosed is a resol phenolic thermosetting resin made by preparing a composition of formaldehyde and a phenol in a molar ratio of about 1:1 to about 3:1, about 1 to about 20 wt %, based on the weight of said composition, of a phenol-formaldehyde polymerization catalyst, and about 0.5 to about 10 wt %, based on the weight of said phenol, of a polyvinyl alcoholic compound. The phenol can be benzophenol, an alkyl from C.sub.1 to C.sub.12 phenol, a bisphenol, or a mixture thereof. The bisphenol can be bisphenol A, bisphenol F, or bisphenol S. The polyvinyl alcoholic compound can be polyvinyl alcohol, polyvinyl acetate, an acetal derived from polyvinyl alcohol, or a mixture thereof. The composition is heated at about 50 to about 120.degree. C. to form the resin.Type: GrantFiled: March 2, 1998Date of Patent: November 2, 1999Assignee: Occidental Chemical CorporationInventor: Michelle Warakomski
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Patent number: 5965213Abstract: 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: GrantFiled: February 2, 1998Date of Patent: October 12, 1999Assignee: BASF Coatings AGInventors: Lawrence Sacharski, Joachim Woltering, Peter Clark, Heinrich Wonnemann
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Patent number: 5939199Abstract: Polyurethane powder coating compositions of high reactivity, containinga) an isocyanate component which is partially or totally blocked with 1,2,4-triazole,b) hydroxyl-containing polymers, andc) if desired, customary auxiliaries and additives, where the isocyanate component is a physical mixture of individual trimers (isocyanato-isocyanurates) of aliphatic and (cyclo)aliphatic and/or cycloaliphatic diisocyanates provide heat curable weather resistant coatings.Type: GrantFiled: March 26, 1997Date of Patent: August 17, 1999Assignee: Huels AktiengesellschaftInventor: Rainer Gras
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Patent number: 5935710Abstract: This invention relates to coating compositions including one or more resins having amino-reactive groups; one or more polyamine curing agents; and one or more aminourethanes. The aminourethanes can be reaction products of (i) oligomeric or polymeric compounds which contain at least one, preferably two or more terminal 2-oxo-1,3-dioxolane groups (cyclic carbonate groups), and (ii) amines containing at least one primary, preferably two or more primary and, if desired, also secondary and tertiary amino groups. The ratios of equivalents of C1):C2) typically is from 1:1 to 1:10, preferably from 1:1.05 to 1:5 and particularly preferably from 1:1.1 to 1:2, and the end product preferably contains one or more free primary amino groups. The composition further may contain, if desired, pigments, fillers, one or more organic solvents, water and conventional additives.Type: GrantFiled: November 17, 1997Date of Patent: August 10, 1999Assignee: Vianova Resins GmbHInventors: Michael Hoenel, Armin Pfeil, Thomas Budnick, Heiner Schwan
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Patent number: 5932687Abstract: Certain applications require polyamide powders of narrow particle size distribution and low porosity.The precipitation process of the invention incorporating a prior nucleation phase provides the desired products.Type: GrantFiled: February 17, 1998Date of Patent: August 3, 1999Assignee: Huels AktiengesellschaftInventors: Franz-Erich Baumann, Norbert Wilczok
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Patent number: 5932288Abstract: An epoxy coating powder composition and a method for controlling the denseness of cured wrinkle finish patterns are provided by the use of a curing agent mixture comprising a blocked Lewis acid, methylenedisalicylic acid and a ring-substituted homolog thereof having the formula ##STR1## wherein x and y are from 1 to 3, and R.sup.1 and R.sup.2 are, independently, hydrogen, alkyl groups having from 1 to 20 carbon atoms, aryl groups having from 6 to 10 carbon atoms, or aryl-substituted methylene groups; with the proviso that when x=y=3, R.sup.1 and R.sup.2 .noteq.hydrogen;wherein the ratio of methylene disalicylic acid and the ring-substituted homolog is from about 50:50 to about 2:98 by weight.Type: GrantFiled: December 18, 1997Date of Patent: August 3, 1999Assignee: Morton International, Inc.Inventors: Owen H. Decker, Charles P. Tarnoski
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Patent number: 5925698Abstract: The present invention is directed to a powder coating composition containing at least one film forming resin and a non-flatting and slip-enhancing amount of at least one additive. The additive is a non-crosslinked reaction product of a hydroxy compound and a carboxylic acid where the reaction product contains at least one ester functionality and at least one straight chain hydrocarbyl group of about 10 to about 100 carbon atoms. The most preferred additive is sorbitan tristearate. The cured powder coatings exhibit lower coefficient of friction and substantial gloss retention.Type: GrantFiled: February 13, 1998Date of Patent: July 20, 1999Assignee: The Lubrizol CorporationInventor: Thomas F. Steckel
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Patent number: 5905104Abstract: The invention provides a protective coating composition for use on substrates including steel, aluminum, iron and the like. This composition further provides abrasion resistance, electrical resistance, ultra-violet protection, corrosion resistance and heat resistance. It can be particularly useful for coating high temperature stacks, mufflers, manifolds, boilers, ovens, furnaces, steam lines, heat exchangers, barbecue equipment, cooking utensils and other parts that require such powder coating composition. This composition further provides good initial adhesion.This invention also provides a powder coating composition containing a hydroxyl-functional silicone resin, a glycidyl-functional acrylic resin and an optional flow control agent.Type: GrantFiled: October 29, 1997Date of Patent: May 18, 1999Assignee: H. B. Fuller Licensing & Financing, Inc.Inventors: Wayne G. Eklund, Paula Torrejon Ramos, Charles J. Torborg
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Patent number: 5902843Abstract: Conventional hot-melt adhesive compositions for the coating of textile sheet structures exhibit problems in respect of resistance to washing and cleaning. The presence of an epoxide in hot-melt adhesive composition enables the production of cleaning-resistant laminated materials having a particularly high level of wash resistance.Type: GrantFiled: March 22, 1996Date of Patent: May 11, 1999Assignee: Huels AktiengesellschaftInventors: Ulrich Simon, Siegfried Hahn
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Patent number: 5886100Abstract: The thermosetting coating composition in a powdery form, includes (a) a binder resin prepared by the steps comprising preparing a starting material monomer mixture of two different polymerization reactions, each of the polymerization reaction being carried out in an independent reaction path, and then concurrently carrying out both of the two different polymerization reactions in one reaction vessel; (b) a colorant; and (c) a crosslinking agent. The coating film is prepared by curing the above thermosetting coating composition.Type: GrantFiled: March 4, 1997Date of Patent: March 23, 1999Assignee: KAO CorporationInventors: Katsutoshi Aoki, Yukiya Sato, Masayuki Maruta, Yasunori Inagaki, Kuniyasu Kawabe
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Patent number: 5886068Abstract: A new molding composition used, for example, in a rotationally-molded thermoplastic refuse container of the type having a hollow handle integrally-molded with a refuse carrying compartment of the container, the improvement which includes a wall integrally-formed with the refuse container and sealingly enclosing the hollow handle from communication with the refuse-carrying compartment of the container for providing greater strength to the container and preventing refuse from lodging in the hollow handles.Type: GrantFiled: November 25, 1996Date of Patent: March 23, 1999Assignee: Toter IncorporatedInventors: J. Timothy Prout, Todd E. Wright, Smith E. Trent, III, Anthony J. Brescia, Jerry E. Lambert
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Patent number: 5880223Abstract: In a coating powder composition comprising A) a polyester resin having carboxyl functionality so as to provide an acid number of between about 15 and about 100, plus B) epoxy curative at a stoichiometric equivalent relative to said polyester resin of between about 0.7 and about 1.3, blooming in the cured coating resulting therefrom is reduced or eliminated by incorporating within the polyester resin A) the monomer 2-butyl, 2-ethyl, 1,3-propane diol (BEPD) at a level to provide between 2 and 25 mole percent of the hydroxyl functionality relative to total hydroxyl functionality of hydroxyl-functional monomers forming the polyester resin.Type: GrantFiled: December 19, 1997Date of Patent: March 9, 1999Assignee: Morton International, Inc.Inventors: Navin B. Shah, Edward Nicholl, Jeno Muthiah
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Patent number: 5874524Abstract: Polymer powders which are redispersible in an aqueous medium are prepared by drying an aqueous polymer dispersion whose polymer particles dispersed in the aqueous medium have a positive or a negative electric surface charge, with the addition of a water-soluble polyelectrolyte as a drying assistant, the electric charge of the polyion being opposite to the electric surface charge of the disperse polymer particles.Type: GrantFiled: October 23, 1996Date of Patent: February 23, 1999Assignee: BASF AktiengesellschaftInventors: Joachim Pakusch, Reinhold Dieing, Jurgen Tropsch
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Patent number: 5855960Abstract: The present invention relates a topcoating composition and a film-forming process by use of the topcoating composition, which are capable of forming a coated film having good weather resistance and good stain resistance. The present invention provides a topcoating composition prepared by incorporating a specified organosilicate and/or its condensate into a specified organic coating composition, a film formed from said topcoating composition being such that a surface of the film, which has been subjected to an acid treatment, shows a contact angle to water of 70.degree. or less; and a film-forming process which comprises coating said topcoating composition onto a substrate to form a film, followed by treating the surface of the film with an acid.Type: GrantFiled: December 19, 1996Date of Patent: January 5, 1999Assignee: Kansai Paint Co., Ltd.Inventors: Kazuhiko Ohnishi, Hirokazu Terashima, Osamu Isozaki
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Patent number: 5840229Abstract: A method is described for producing a molded article by molding a thermoplastic elastomer powder having a sphere-reduced average diameter of 0.7 mm or less, a bulk specific gravity of at least 0.38 and a failing property of 20 second/100 ml or less, wherein the thermoplastic elastomer contains an elastomeric ethylene-.alpha.-olefin copolymer and a polyolefin resin and has a complex dynamic viscosity .eta.*(1) of 1.5.times.10.sup.5 poise or less when measured at 250.degree. C. at a frequency of 1 radian/sec., and a Newtonian viscosity index n of 0.67 or less, in which the Newtonian viscosity index n is calculated according to the following formula:n=(log .eta.*(1)-log .eta.*(100))/2wherein .eta.*(100) is a complex dynamic viscosity measured at 250.degree. C. at a frequency of 100 radian/sec.Type: GrantFiled: November 15, 1995Date of Patent: November 24, 1998Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroyuki Sugimoto, Yoshihiro Nakatsuji, Toshio Igarashi, Shigeo Tanaka
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Patent number: 5827608Abstract: A method of forming a thermoplastic layer on a flexible, two-dimensional substrate is provided. In the steps of the method, a thermoplastic powder is provided having a melt flow index of at least 0.008 grams/10 minutes, the powder is applied to at least one surface of the substrate to form a particle layer, and the coated substrate is subjected to elevated heat and pressure until particle layer is fused into a continuous layer and the continuous layer is bonded to the substrate. The invention also includes a powder for preparing the thermoplastic layer and a method of making the powder.Type: GrantFiled: October 28, 1996Date of Patent: October 27, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Ernest M. Rinehart, Rafael M. Yasis
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Patent number: 5811190Abstract: The present invention relates to a powder coating composition for the production of matt coatings containing as binderA) a component having hydroxyl groups,B) a polyisocyanate having blocked and optionally free isocyanate groups,C) a component having carboxyl groups and/or carboxylic anhydride groups and contains one or more of the following:C1) aliphatic and/or cycloaliphatic dicarboxylic acids having 4 to 20 carbon atoms,C2) monomeric and/or polymeric anhydrides of dicarboxylic acids C1) andC3) aliphatic hydroxycarboxylic acids having 4 to 18 carbon atoms, andD) a component which has groups that are reactive with carboxyl groups and/or carboxylic anhydride groups wherein components A), B), C) and D) are present in amounts such that1) 0.6 to 1.4 isocyanate groups of component B) are present for each hydroxyl group of component A),2) 0.3 to 1.Type: GrantFiled: January 31, 1997Date of Patent: September 22, 1998Assignee: Bayer AktiengesellschaftInventors: Hans-Josef Laas, Hans-Ulrich Meier-Westhues, Reinhard Halpaap, Ulrich Freudenberg, Hans-Peter Klee
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Patent number: 5807929Abstract: At least bis-imido 1,3,5-triazines and processes of preparing the same are disclosed. Also disclosed are prepolymers having at least bis-imido functionality and curable compositions comprising at least bis-imido 1,3,5-triazines or prepolymers thereof in combination with active hydrogen and/or epoxy functional materials. The at least bis-imido 1,3,5-triazines and prepolymers may be advantageously employed as crosslinking agents which crosslink by a ring opening reaction that eliminates the release of volatile organic compounds.Type: GrantFiled: February 28, 1997Date of Patent: September 15, 1998Assignee: Cytec Technology Corp.Inventors: Lon-Tang Wilson Lin, Robert G. Lees, William F. Jacobs, III, Subban Ramesh
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Patent number: 5795927Abstract: Powdered coating compositions and methods for obtaining improved wrinkled finishes with epoxy powder coatings are provided which utilize a color stabilizer effective to avoid an excessive red color shift upon cure of the composition.Type: GrantFiled: January 3, 1997Date of Patent: August 18, 1998Assignee: Morton International, Inc.Inventors: Owen H. Decker, David A. Mountz, Charles P. Tarnoski
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Patent number: 5789498Abstract: A curing catalyst for use in epoxy resin, said curing catalyst being a metal salt complex of an adduct between polyepoxide and imidazoles; and a heat curing coating composition prepared by mixing the above curing catalyst with a coating composition containing an epoxy group-containing compound.Type: GrantFiled: December 5, 1996Date of Patent: August 4, 1998Assignee: Kansai Paint Co., Ltd.Inventors: Kazuhiko Ohnishi, Shigeo Nishiguchi
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Patent number: 5789039Abstract: The present invention relates to powder coatings curable by exposure to radiation, typically ultraviolet radiation. Powder coatings based upon cationically catalyzed resins (typically epoxy resins) are described including bisphenols, bisphenols modified by novolac, as well as aliphatic type epoxides including hydrogenated bisphenol-A, glycidyl methacrylic, glycidyl acrylics or related compounds, and vinyl ethers including mixtures of the foregoing compounds. Photoinitiators of sulfonium type, ferrocinium type, iodonium type, triphenolic types and related compounds are also included. Opacifiers, flow agents and plasticizers are also included. Charge additives for improved electrostatic deposition of the power coating are also described. Degassing agents are also typically included in the formulation, both for degassing the powder coating during cure, and to assist in degassing those substrates (such as wood) which tend to form bubbles during cure. Flow agents are also typically included in the formulation.Type: GrantFiled: January 26, 1996Date of Patent: August 4, 1998Assignee: Herberts Powder Coatings, Inc.Inventors: Kevin M. Biller, Ben A. MacFadden
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Patent number: 5780560Abstract: Powdered coating compositions and methods for obtaining improved wrinkled finishes with epoxy powder coatings are provided which utilize curing agents other than commercially available methylenedisalicylic acid.Type: GrantFiled: February 19, 1997Date of Patent: July 14, 1998Assignee: Morton International, Inc.Inventors: Owen H. Decker, Jeno Muthiah, David A. Mountz
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Patent number: 5777045Abstract: This invention relates to thermally-stable, polyglycidyl-terminated polyesters from diglycidyl phthalates and carboxylated polyesters. The resulting resins, when blended and cured with other carboxylated polyesters, are improved binders for powder coating and other applications. The invention also relates to polyglycidyl ester-based powder coating compositions containing these resins.Type: GrantFiled: August 23, 1996Date of Patent: July 7, 1998Assignee: Amoco CorporationInventor: Lawrence J. Carr
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Patent number: 5763099Abstract: The invention relates to a binder composition for powder coatings. The binder composition is substantially based on a mixture of an unsaturated polyester and an oligomer having a plurality of allyl groups and further having at least either ether and ester groups or urethane and optionally ether groups.The oligmer is preferably an allyl ether ester being more preferably the ester of trimethylolpropane diallyl ether or pentaerythritol triallyl ether and a polycarboxylic acid (anhydride).Type: GrantFiled: May 7, 1996Date of Patent: June 9, 1998Assignee: DSM N.V.Inventors: Tosko A. Misev, Eimbert G. Belder, Fokeltje A. Koldijk
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Patent number: 5747599Abstract: Disclosed is a thermosetting coating composition comprising (A) an epoxy compound and (B) an aromatic sulfonium salt represented by the formula ##STR1## wherein R.sup.1 represents a hydrogen atom, a hydroxyl group, an alkoxyl group, or a group represented by the formula ##STR2## wherein Y represents an alkyl group, an alkoxyl group, a phenyl group or a phenoxy group all of which may have a substituent, each of R.sup.2 and R.sup.3 represents a hydrogen atom, a halogen atom, or an alkyl group, each of R.sup.4 and R.sup.5 represents an alkyl group, an aralkyl group or an aryl group all of which may have a substituent, and X.sup.- represents SbF.sub.6.sup.-, PF.sub.6.sup.-, AsF.sub.6.sup.-, or BF.sub.4.sup.-.Type: GrantFiled: August 27, 1997Date of Patent: May 5, 1998Assignee: Kansai Paint Company, LimitedInventor: Kazuhiko Ohnishi
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Patent number: 5747565Abstract: A powder coating composition is disclosed which includes (a) 100 parts by weight of a mixed epoxy resin having an epoxy equivalent of 800-2000 and containing (a-1) a diglycidyl ether of bisphenol A having an epoxy equivalent of 180-2500 and (a-2) a rubber-modified epoxy resin having an epoxy equivalent of 180-2500 and obtained by reaction of a diglycidyl ether of bisphenol A with a carboxyl terminated acrylonitrile-butadiene copolymer; (b) a mixed curing agent consisting of (b-1) 0.05-5 parts by weight of an imidazole compound, (b-2) 0.5-10 parts by weight of dicyanodiamide and (b-3) 1-10 parts by weight of a dihydrazide of a dibasic carboxylic acid; and (c) 50-100 parts by weight of silica.Type: GrantFiled: March 1, 1993Date of Patent: May 5, 1998Assignee: Somar CorporationInventors: Kazuya Ono, Akira Yasuda, Katsuji Kitagawa
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Patent number: 5744532Abstract: An injection molding binder permitting formation of a molded article incapable of sustaining such defects as a crack or an expansion at the degreasing step and allowing the degreasing treatment to be completed quickly, an injection molding composition, and a method for the production of a sintered member are disclosed. The powder injection molding binder contains a polymer (I) which is obtained by polymerizing a monomer component composed of 50 to 100% by weight of a long side chain-containing monomer and 0 to 50% by weight of other polymerizable monomer. The powder injection molding composition comprises the binder, a binder auxiliary, and a powdery material capable of sintering. The method for the production of a sintered member comprises the steps of injection molding the composition, subjecting the molded mass to a degreasing treatment, and sintering the degreased molded mass.Type: GrantFiled: March 20, 1995Date of Patent: April 28, 1998Assignee: Nippon Shokubai Co. Ltd.Inventors: Yoshimitsu Kankawa, Toshiki Nikaya
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Patent number: 5739202Abstract: A process for preparing a pigmented vinylidene fluoride polymer based powder coating composition that comprises steps of dispersing at least one pigment in a solution of a fluorine-free polymer that is compatible with the vinylidene fluoride polymer, blending said vinylidene fluoride polymer powder with the pigment dispersion, removal of solvent, milling, and classifying the compound to obtain the desired product.Type: GrantFiled: February 11, 1997Date of Patent: April 14, 1998Inventor: Roger L. Pecsok
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Patent number: 5736196Abstract: A coating powder based on an epoxy resin is applied to a substrate and fused and cured thereon. Curing is effected by exposing the coating powder at the point of application to a fluid curative or cure catalyst, e.g., by exposing the fusing coating powder to an ammonia-containing atmosphere.Type: GrantFiled: October 2, 1996Date of Patent: April 7, 1998Assignee: Morton International, Inc.Inventors: Owen H. Decker, Dieter W. Jungclaus, Karl R. Wursthorn, Glenn D. Correll, David A. Mountz
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Patent number: 5721052Abstract: Thermosetting powder coating compositions adapted to form a grainy textured finish on heat sensitive substrates, especially wood products, such as particle board, conductive particle board, and medium density fiber board, without damaging the substrates comprise an epoxy resin, particularly bisphenol A type epoxy resins having low viscosities, either a catalytic curing agent comprising an imidazole, a substituted imidazole, or adduct of an imidazole or substituted imidazole and an epoxy resin, or a curing agent comprising an adduct of a polyamine and an epoxy resin, or a combination of the catalytic curing agent and curing agent, a texturing agent, a flow control agent, optional extender, and optional pigment. The thermosetting powder coatings have a cure time/temperature ranging from about 30 seconds at about 350.degree. F. peak substrate temperature down to about 20 minutes at about 225.degree. F.Type: GrantFiled: November 5, 1996Date of Patent: February 24, 1998Assignee: Morton International, Inc.Inventors: Jeno Muthiah, Andrew T. Daly, Richard P. Haley, Paul R. Horinka, Joseph J. Kozlowski, Glenn D. Correll
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Patent number: 5714199Abstract: A method of forming a polymer backing on a glass substrate through the use of a pre-polymer powder applied onto the surface of the substrate. The backing is applied on-line in an existing substrate manufacturing or fabricating process while the substrate is at a high enough temperature to polymerize the powder. The resulting backed substrate is durable and abrasion resistant and exhibits excellent opacification and adhesion properties.Type: GrantFiled: June 7, 1995Date of Patent: February 3, 1998Assignee: Libbey-Owens-Ford Co.Inventors: Peter F. Gerhardinger, Douglas M. Nelson
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Patent number: 5707741Abstract: This invention relates to coating compositions including one or more resins having amino-reactive groups; one or more polyamine curing agents; and one or more aminourethanes. The aminourethanes can be reaction products of (i) oligomeric or polymeric compounds which contain at least one, preferably two or more terminal 2-oxo-1,3-dioxolane groups (cyclic carbonate groups), and (ii) amines containing at least one primary, preferably two or more primary and, if desired, also secondary and tertiary amino groups. The ratios of equivalents of C1):C2) typically is from 1:1 to 1:10, preferably from 1:1.05 to 1:5 and particularly preferably from 1:1.1 to 1:2, and the end product preferably contains one or more free primary amino groups. The composition further may contain, if desired, pigments, fillers, one or more organic solvents, water and conventional additives.Type: GrantFiled: April 26, 1996Date of Patent: January 13, 1998Assignee: Hoechst AktiengesellschaftInventors: Michael Hoenel, Armin Pfeil, Thomas Budnick, Heiner Schwan