Patents Represented by Attorney Frank J. Troy
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Patent number: 4129489Abstract: A novel method of preparing polymer based powder coating compositions involves as a first step the preparation of a mixture containing one or more ethylenically unsaturated monomers which are polymerizable by ionizing radiation, and optionally other coating composition additives. Optional additives which may be incorporated in the mixture include pigments, internal or external crosslinkers, chain transfer agents, flow promoters, plasticizers, viscosity control agents, minor proportions of resins, and the like. Pigments are especially desirable additives. The next step in the process is to apply a coating of the mixture to a substrate. Then, the coated substrate is subjected to ionizing radiation to polymerize the ethylenically unsaturated monomers and thereby form a solid film. Finally, the film is broken into particles by any of several mechanical means to form a polymer based powder coating composition which when applied to a substrate and baked, fuses to produce a film.Type: GrantFiled: April 24, 1978Date of Patent: December 12, 1978Assignee: PPG Industries, Inc.Inventors: Roger M. Christenson, Rostyslaw Dowbenko, Joseph M. Makhlouf
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Patent number: 4104230Abstract: Two-package polymeric compositions which form cured products having excellent stain and solvent resistance and which can be water-reducible if desired comprise a polyepoxide and an addition interpolymer containing pendent salt groups, formed by reacting carboxyl groups with a base, and pendent amine groups formed by reacting carboxyl groups with an alkylenimine. The addition interpolymer preferably has a pH of greater than 7.0 in the presence of water, and when mixed with the polyepoxide reacts to form a cured, hard, solvent and stain-resistant material.Type: GrantFiled: February 23, 1977Date of Patent: August 1, 1978Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, Karl F. Schimmel, James A. Claar
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Patent number: 4098745Abstract: Water-borne or aqueous coating compositions which are especially suitable for use as bondable base coats and size coats in three piece, tin-free steel beverage containers comprise blends of an aqueous dispersion of an amine solubilized interpolymer with aldehyde condensation resins. The interpolymer is prepared in the absence of mercaptans, external surfactants and external dispersion stabilizers and is formed from substituted carboxylic acid amide units; ethylenically unsaturated acid units; hardening units from monomers such as styrene, vinyl toluene or alkyl methacrylate having from 1 to 4 carbon atoms and flexibilizing units from certain alkyl acrylates or methacrylates. The interpolymers are solubilized by neutralizing or partially neutralizing the acid units of the interpolymer with monomeric amines. Aldehyde condensation resins, such as phenol aldehyde resins, aminoplast resins or mixtures thereof are especially desirable.Type: GrantFiled: August 27, 1975Date of Patent: July 4, 1978Assignee: PPG Industries, Inc.Inventor: Robert F. Borman
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Patent number: 4097438Abstract: Water-based coating compositions for use as internal sanitary liners for metal containers containing beer, carbonated and non-carbonated soft drinks, and fruit juices consist essentially of aqueous dispersions of amine-solubilized interpolymers, and interpolymers being formed from substituted carboxylic acid amide units; ethylenically unsaturated acid units; hardening units from monomers such as styrene, vinyl toluene or alkyl methacrylates having from 1 to 4 carbon atoms and flexibilizing units from certain alkyl acrylates or methacrylates. The interpolymers are solubilized by neutralizing the acid units of the interpolymer with monomeric amines. In order to produce a stable composition, the amount of amine utilized in neutralizing the acid groups of the interpolymer should be sufficient to produce at least 0.200 milliequivalents of salt per gram of resin solids.Type: GrantFiled: August 5, 1974Date of Patent: June 27, 1978Assignee: PPG Industries, Inc.Inventors: Roger M. Christenson, Rudolf Maska
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Patent number: 4093673Abstract: Resinous compositions useful as coating compositions comprise blends of hydroxyfunctional polymers; organoalkoxy silane crosslinking agents represented by the formula:R.sub.n Si(OR').sub.4-nwherein R is an aryl, alkaryl, aralkyl, alkyl having 1 to 8 carbon atoms, XR .sub.4 --or ##STR1## RADICAL, WHEREIN R.sub.1 is hydrogen or an alkyl radical of 1 to 6 carbon atoms, R.sub.2 is a member selected from the group consisting of alkylene radicals of 1 to 7 carbon atoms and carbonyloxy radicals represented by the formula: ##STR2## wherein R.sub.3 is an alkylene radical of 1 to 6 carbon atoms, wherein R.sub.4 is an alkylene radical of 1 to 6 carbon atoms, a cycloalkylene radical, or an arylene radical and X is a functional group selected from the group consisting of --OH, --SH, ##STR3## halogen, NH.sub.2 --, ##STR4## and NH.sub.2 --CH.sub.2 --CH.sub.2 --NH--, and wherein R' is methyl, ethyl, 2-methoxyethoxy, 2-ethoxyethoxy, m is 0 or 1 and n is 0, 1 or 2; and cure accelerating catalysts.Type: GrantFiled: November 14, 1974Date of Patent: June 6, 1978Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, Rostyslaw Dowbenko, Marvis E. Hartman, Samuel Porter, Jr.
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Patent number: 4089800Abstract: Void-containing microcapsules are prepared by a method featuring gellation of an organic polymer with the simultaneous precipitation of an organic liquid non-solvent. The method involves the preparation of a solution containing an organic polymer, a good solvent for the polymer and an organic liquid non-solvent which is miscible with the polymer solvent. The solution is then atomized into a bath containing a liquid which is miscible with the good polymer solvent but which is immiscible with the organic liquid non-solvent. The bath liquid extracts out the good polymer solvent, causing gellation of polymer around discrete droplets of the organic liquid non-solvent, which simultaneously precipitates out of the solution as the good polymer solvent is extracted, thereby producing microcapsules having encapsulated therein the non-solvent. The organic liquid non-solvent can then be removed as by evaporation to provide void-containing microcapsules.Type: GrantFiled: April 4, 1975Date of Patent: May 16, 1978Assignee: PPG Industries, Inc.Inventor: Rodger G. Temple
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Patent number: 4075141Abstract: Coating compositions having improved application characteristics as well as other desirable properties are prepared by adding insoluble crosslinked polymeric microparticles to solutions or dispersions of carboxylic acid amide interpolymers. The compositions may be spray coated onto various substrates in two coat applications to form coatings having improved film build, pattern control and flow control while maintaining the gloss characteristics of the film.Type: GrantFiled: October 9, 1975Date of Patent: February 21, 1978Assignee: PPG Industries, Inc.Inventors: Samuel Porter, Jr., Bruce N. McBane
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Patent number: 4065415Abstract: This invention relates to a water-based coating composition in which solvent or water popping and sagging are eliminated or substantially reduced. The composition comprises a thermosetting, film-forming organic binder dispersed in an aqueous medium containing from 60 to 100 parts by weight of water and 0 to 40 parts by weight of a volatile organic solvent. The organic binder is formulated from (a) and acid-containing interpolymer adapted to be dissolved or dispersed in water with the acid of a base; (b) a water-soluble or water-dispersible polyether polyol or polyester polyol having a molecular weight of at least 300 and (c) a water-soluble or water-dispersible aldehyde condensation resin. The interpolymer consists essentially of a carboxylic acid amide in units of the structure: ##STR1## wherein R' is hydrogen or lower alkyl and R is lower alkyl; an alpha, beta-ethylenically unsaturated carboxylic acid; and at least one other monomer containing a CH.sub.2 =CH< group.Type: GrantFiled: October 1, 1975Date of Patent: December 27, 1977Assignee: PPG Industries, Inc.Inventors: Roger M. Christenson, Clarence E. Evjen
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Patent number: 4065267Abstract: This invention relates to an improved apparatus for preparing alkylated urea or melamine formaldehyde resins from alcohols having a boiling point higher than water, which apparatus permits the return of substantially dry alcohol from the water distillation system to the reactor.The apparatus comprises a reactor connected to a fractionating column, having a rectifying section above a stripping section, at the junction of the rectifying section and the stripping section; a reboiler at the bottom of the fractionating column, which returns substantially dry alcohol to the reactor; a condenser which condenses the alcohol-water vapor mixture exiting the rectifying section of the column; and a separator device which separates the condensed mixture into an alcohol phase and a water phase, and from which the alcohol phase is returned to the top portion of the column.Use of the apparatus of the invention results in a substantial reduction in reaction times.Type: GrantFiled: September 13, 1976Date of Patent: December 27, 1977Assignee: PPG Industries, Inc.Inventors: Lawrence Ladage, Hilary E. Holste
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Patent number: 4065416Abstract: This invention relates to a water-based coating composition in which solvent or water popping and sagging are eliminated or substantially reduced. The composition comprises a thermosetting, film-forming organic binder dispersed in an aqueous medium containing from 60 to 100 parts by weight of water and from 0 to 40 parts by weight of a volatile organic solvent. The organic binder is formulated from (a) an acid-containing interpolymer adapted to be dissolved or dispersed in water with the aid of a base and (b) a water-soluble or water-dispersible polyether polyol or polyester polyol having a molecular weight of at least 300.Type: GrantFiled: October 1, 1975Date of Patent: December 27, 1977Assignee: PPG Industries, Inc.Inventors: Roger M. Christenson, Clarence E. Evjen
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Patent number: 4064087Abstract: A novel method of preparing polymers in aqueous medium involves the free radical initiated addition polymerization of the monomer or monomers from which the polymer is formed in an aqueous medium in the presence of a non-salt forming free radical polymerization initiator and a salt or partial salt of an acid-containing polymer containing one or more pendent double bonds. The pendent double bonds of the acid containing polymer provide a convenient grafting site for the polymer being formed by the free radical polymerization.The novel method of the invention provides for excellent stability and compatibility of the resultant aqueous based polymer.Type: GrantFiled: January 5, 1976Date of Patent: December 20, 1977Assignee: PPG Industries, Inc.Inventor: Suryya K. Das
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Patent number: 4064294Abstract: Microcapsules are produced in-situ in a film or during the manufacturing process of a water-based coating composition from which the film is formed. A principal process involves the in-situ production of void-containing microcapsules in a film formed from a water-based coating. This principal process involves as a first step the preparation of a polymer composition which may be a homogeneous solution containing a water-immiscible organic polymer, a water-immiscible solvent for the polymer, and a water-immiscible lower volatility non-solvent which is miscible with the solvent; or an emulsion containing as the continuous phase a water-immiscible organic polymer dissolved in a water-immiscible solvent for the polymer and, as the discontinuous phase, droplets of a lower volatility non-solvent dispersed in the continuous phase. This polymer composition is then emulsified under agitation and in the presence of a surfactant into a water-based coating composition.Type: GrantFiled: June 2, 1975Date of Patent: December 20, 1977Assignee: PPG Industries, Inc.Inventors: Simon Babil, James A. Claar, Rodger G. Temple
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Patent number: 4049596Abstract: The addition of blends of zinc borate and barium metaborate pigments to resinous film forming vehicles comprising blends of: (1) an aqueous acrylic latex with an alkyd resin, a styrene allyl alcohol ester adduct or a polymerized dehydrated castor oil product or (2) a solvent-based epoxy ester resin with a chlorinated paraffin; produce primer compositions in which corrosion resistance is synergistically enhanced. The resultant primer compositions may be used on ferrous or non-ferrous metallic substrates such as motor vehicles, appliances, aluminum lawn furniture, etc.Type: GrantFiled: November 3, 1975Date of Patent: September 20, 1977Assignee: PPG Industries, Inc.Inventors: Andrew Traister, Glenn Troup
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Patent number: 4043953Abstract: The potlife of an ambient temperature, moisture-curable coating composition comprising an acrylic-silane interpolymer and a cure-accelerating catalyst is increased by the addition to the composition of from about 0.5 percent to about 15 percent by weight of interpolymer solids of a monomeric hydrolytically reactive organo-silicon compound represented by the structural formula:X.sub.n Si(OR).sub.4-nwherein X is an organic radical having from 1 to 12 carbon atoms, R is methyl, ethyl, 2-methoxyethyl, 2-ethoxyethyl, or an acyl group containing 5 or less carbon atoms and n is 0, 1 or 2.Type: GrantFiled: May 2, 1975Date of Patent: August 23, 1977Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, Marvis E. Hartman, Roger L. Scriven
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Patent number: 4029621Abstract: Aqueous coating compositions which may be applied by conventional coating techniques as well as by electrodeposition are provided by reacting an epoxy-containing organic material with a compound containing a mercaptan group and at least one group hydrolyzable to a carboxyl group. Examples of such hydrolyzable groups include ester groups, amide groups and nitrile groups. The resultant product is then hydrolyzed and solubilized using hydrolyzing agents such as aqueous alkali metal hydroxides and aqueous solutions of various amines.Type: GrantFiled: April 28, 1976Date of Patent: June 14, 1977Assignee: PPG Industries, Inc.Inventors: Marvis E. Hartman, Thomas R. Hockswender, Rostyslaw Dowbenko, Roger M. Christenson
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Patent number: 4025474Abstract: Polyester coating compositions having improved application characteristics as well as other desirable properties are prepared by adding insoluble crosslinked polymeric microparticles to solutions or dispersions comprising oil-modified or oil-free polyester resins and aminoplast resins. The compositions may be spray coated onto various substrates in two coat applications to form coatings having improved film build, pattern control and flow control while maintaining the gloss characteristics of the film. These coatings are useful in general coating applications and are particularly useful in automotive finishing or refinishing.Type: GrantFiled: June 2, 1975Date of Patent: May 24, 1977Assignee: PPG Industries, Inc.Inventors: Samuel Porter, Jr., Bruce N. McBane
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Patent number: 4009307Abstract: Coating compositions which form polyurea-urethane coatings having excellent chemical and physical properties are prepared by blending (a) from about 2 percent to about 80 percent by weight of resin solids of an isocyanate-terminated polyurethane prepolymer consisting essentially of the reaction product of an organic diisocyanate and an organic diol, wherein said prepolymer is prepared at an NCO/OH ratio of from 2:1 to about 4:3, (b) from about 2 percent to about 60 percent by weight resin solids of an isocyanate-terminated polyurethane prepolymer consisting essentially of the reaction product of 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethylcyclohexane and a mixture of aliphatic polyols wherein at least about 30 mole percent of the total hydroxyl groups supplied by said mixture of polyols is supplied by an aliphatic polyol having at least three hydroxyl groups and wherein said prepolymer is prepared at an NCO/OH ratio of at least 1.Type: GrantFiled: July 24, 1975Date of Patent: February 22, 1977Assignee: PPG Industries, Inc.Inventors: J. Alden Erikson, Ken W. Niederst
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Patent number: 4007141Abstract: A resinous composition for preparing opaque films which consists of a film-forming material in which there is dispersed discrete cellular particles. Each particle is composed of non-opaque, film-forming material, such as acrylic resins, and contains therein one or more cells, having an average diameter of less than 15 microns, which serve to scatter incident light rays. The particulate matter is easily dispersed in the film-forming material by means of conventional mixing procedures.Type: GrantFiled: August 21, 1969Date of Patent: February 8, 1977Assignee: PPG Industries, Inc.Inventors: Marco Wismer, Jerome A. Seiner
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Patent number: 3997485Abstract: An ambient temperature, moisture curable coating composition which dries to form films having excellent gloss characteristics comprises a blend of (1) a silicon-containing acrylic interpolymer; (2) a graft copolymer having an alkyd resin backbone and a polymeric side chain segment of polymerized acrylic and organoalkoxysilane monomers; and (3) a cure accelerating catalyst.Type: GrantFiled: February 11, 1975Date of Patent: December 14, 1976Assignee: PPG Industries, Inc.Inventors: Rostyslaw Dowbenko, Marvis E. Hartman
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Patent number: 3991216Abstract: Water-based coating compositions for use as internal sanitary liners for metal containers containing beer, carbonated and noncarbonated soft drinks, and fruit juices consist essentially of aqueous dispersions of amine-solubilized interpolymers, said interpolymers being formed from substituted carboxylic acid amide units; ethylenically unsaturated acid units; hardening units from monomers such as styrene, vinyl toluene or alkyl methacrylates having from 1 to 4 carbon atoms and flexibilizing units from certain alkyl acrylates or methacrylates. The interpolymers are solubilized by neutralizing the acid units of the interpolymer with monomeric amines. In order to produce a stable composition, the amount of amine utilized in neutralizing the acid groups of the interpolymer should be sufficient to produce at least 0.200 milliequivalents of salt per gram of resin solids.Type: GrantFiled: August 13, 1975Date of Patent: November 9, 1976Assignee: PPG Industries, Inc.Inventors: Roger M. Christenson, Rudolf Maska