Patents by Inventor David T. McKeough
David T. McKeough has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6602603Abstract: Described are articles having a photochromic poly(meth)acrylic coating The coatings exhibit a Fischer microhardness of from 50 to 150 Newtons per mm2 and improved photochromic performance properties, i.e., the formation of darker activated colors and faster rates of photochromic activation and fade when irradiated with ultraviolet light.Type: GrantFiled: September 4, 2001Date of Patent: August 5, 2003Assignee: PPG Industries Ohio, Inc.Inventors: Cletus N. Welch, Robert W. Walters, David T. McKeough, Eric M. King
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Publication number: 20020076549Abstract: Described are articles having a photochromic poly(meth)acrylic coating The coatings exhibit a Fischer microhardness of from 50 to 150 Newtons per mm2 and improved photochromic performance properties, i.e., the formation of darker activated colors and faster rates of photochromic activation and fade when irradiated with ultraviolet light.Type: ApplicationFiled: September 4, 2001Publication date: June 20, 2002Inventors: Cletus N. Welch, Robert W. Walters, David T. McKeough, Eric M. King
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Patent number: 5359005Abstract: Stable, non-gelled, one-package coating compositions capable of being cured at ambient conditions to produce durable coatings comprising at least one polymer and/or oligomer having a molecular weight of at least about 100 and bearing at least two specific aziridine moieties, at least two specific carbodiimide moieties or combinations thereof and at least one polymer and/or oligomer having a molecular weight of at least about 100 and bearing at least two covalently blocked carboxylic acid moieties. Process for coating a substrate using such compositions are also claimed.Type: GrantFiled: December 29, 1992Date of Patent: October 25, 1994Assignee: PPG Industries, Inc.Inventors: Charles M. Kania, Padmanabhan Sundararaman, David T. McKeough, Gregory J. McCollum, James B. O'Dwyer
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Patent number: 5034454Abstract: Disclosed herein are crosslinkable water-dispersible acrylic copolymers which are prepared by free-radical initiated polymerization of ethylenically unsaturated monomers containing independently an active hydrogen group, a carboxyl group and a sulfonic group, wherein the polymerization is conducted in the presence of a wax. In combination with curing agents, the crosslinkable compositions are particularly useful in imparting markedly improved flow to dip coatings.Type: GrantFiled: March 3, 1989Date of Patent: July 23, 1991Assignee: PPG Industries, Inc.Inventors: Rudolf Maska, David T. McKeough, David L. Holzinger, Susan D. Klejsmit
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Patent number: 4732929Abstract: Disclosed are essentially zinc-free, organic coating compositions based on silicon-containing polyols comprising reaction products of hydrophobic polyols, organosilicon-containing materials, and higher monohydric alcohols, R-OH. The organosilicon-containing material comprises an organosilicon-containing substance free of certain functional groups attached directly to carbon and essentially free of alkali metal ions. The organosilicon-containing substance has atoms bonded directly to Si all of which are selected from O, N, and/or Cl. The organosilicon-containing substance also has moieties directly bonded to Si which are displaceable by reaction with water and/or alcohol. The reaction product is not capable of being gelled when subjected to a specific gel test, has a content of hydroxyl groups from the hydrophobic polyol ranging from 0.4 to 10 milliequivalents per gram of reaction product, has a content of groups, --OR, from the higher monofunctional alcohol ranging from 0.Type: GrantFiled: February 27, 1987Date of Patent: March 22, 1988Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, David T. McKeough, John R. Peffer
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Patent number: 4652605Abstract: A polymeric reaction product, a process for its preparation and a coating composition containing the reaction product as a binder are described. The polymeric reaction product is prepared by the vinyl addition polymerization of a vinyl monomer component of which at least 50 percent by weight is an active hydrogen-containing vinyl monomer in the presence of a polymeric diluent. The rate of polymerization is controlled such that the amount of unreacted vinyl monomer, on the average, does not exceed 10 percent by weight of the total weight of the reaction mixture.Type: GrantFiled: December 17, 1984Date of Patent: March 24, 1987Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, Michael M. Chau, J. Alden Erikson, Robert J. Lipinski, David T. McKeough, Richard M. Nugent, Jr.
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Patent number: 4628076Abstract: Disclosed is an ungelled resin comprising a compound corresponding to a specified formula (I) which compound typically is prepared by reaction of an aminoalkyloxy silane with an organic isocyanate. The ungelled resin contains a hydrolyzable group that is attached directly to Silicon. The ungelled resin can be utilized in coating compositions. The ungelled resin can be cured with moisture and/or with polyols, and can be used to provide protective and/or decorative films on a variety of substrates.The novel compounds contained in the ungelled resin for convenience can be thought of as prepared from an organic isocyanate having an average functionality of at least 1; a silicon-containing compound corresponding to a specified formula (III) infra, the silicon-containing compound having at least one hydrolyzable group; and a compound containing at least 2 carbon atoms, at least 1 functional group reactive with a moiety on the silicon-containing compound and at least one amino group.Type: GrantFiled: December 17, 1984Date of Patent: December 9, 1986Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, David T. McKeough
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Patent number: 4623697Abstract: Disclosed is an ungelled resin composition comprising a compound having at least one group containing a silicon atom selected from: ##STR1## wherein Q represents the residue from an organic polyol selected from the group consisting of (1) simple diols, triols and higher hydric alcohols, (2) polyester polyols, (3) polyether polyols, (4) amide-containing polyols, (5) epoxy polyols and (6) polyhydric polyvinyl alcohols, and eachR independently is selected from the group of moieties consisting of hydrogen, and a C.sub.1 -C.sub.10 group joined to Si through an Si-C linkage, andY represents an easily hydrolyzable group.The ungelled resin composition contains an amount of easily hydrolyzable Y moieties directly bonded to silicon atoms such that the ratio of the number of grams of the ungelled resin composition to equivalents of easily hydrolyzable Y moieties in the ungelled resin composition is in a range of from 40 to 667.Type: GrantFiled: April 30, 1985Date of Patent: November 18, 1986Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, David T. McKeough
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Patent number: 4622369Abstract: Disclosed is an ungelled urethane resin composition containing a urethane compound having in a molecule thereof at least one group containing a silicon atom selected from: ##STR1## wherein Q represents the residue from a urethane polyol; eachR which may be the same or different, represents hydrogen or a C.sub.1 -C.sub.10 group joined to Si through an Si-C linkage; andY represents an easily hydrolyzable group.The urethane resin composition contains an amount of easily hydrolyzable Y moieties such that the ratio of the number of grams of the ungelled urethane resin composition to equivalents of easily hydrolyzable Y moieties in the ungelled urethane resin composition is in a range of from 40 to 667. Preferred urethane resin compositions can be cured in the presence of atmospheric moisture and a suitable catalyst at a temperature of less than or equal to 121 degrees Celsius within 3 hours.Disclosed is a method for producing the ungelled urethane resin composition.Type: GrantFiled: April 30, 1985Date of Patent: November 11, 1986Assignee: PPG Industries, Inc.Inventors: Wen H. Chang, David T. McKeough, Ronald R. Ambrose
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Patent number: 4613451Abstract: Disclosed is a liquid composition comprising a mixture of (A) a hydrophobic polyol, and (B) an organosilicon-containing material. The organosilicon-containing material is substantially free of unhydrolyzed aminoalkylsilane and comprises an organosilicon-containing substance free of functional groups attached to carbon and essentially free of alkali metal ions. The organosilicon-containing substance has atoms bonded directly to silicon all of which are selected from O, N, and/or Cl. The silicon-containing substance additionally has moieties directly bonded to Si which are displaceable by reaction with water and/or alcohol. At least a part of the silicon-containing substance is hydrolyzed to a compound or a mixture of compounds which contains a residual amount of the moieties directly bonded to Si which are displaceable by reaction with water and/or alcohol.Type: GrantFiled: January 31, 1983Date of Patent: September 23, 1986Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, David T. McKeough
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Patent number: 4605724Abstract: There are disclosed herein lactone-polyester polyols which are derived from lactones, resinous polyols thereof, and coating compositions formulated therewith. The polyester polyols are typically prepared by reacting a large excess of low molecular weight polyols with lactones or functional equivalents thereof. The polyols are employed in amounts sufficient to produce reaction products containing a significant amount of unreacted polyols which can be subsequently removed by means such as vacuum distillation.Type: GrantFiled: October 1, 1984Date of Patent: August 12, 1986Assignee: PPG Industries, Inc.Inventors: Ronald R. Ambrose, Wen-Hsuan Chang, David T. McKeough, John R. Peffer
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Patent number: 4590254Abstract: Disclosed herein is a poly(urethane-urea) which is prepared by reverse-addition of an isocyanate-terminated prepolymer to an organic medium containing an alcoholic solvent and a chain extender comprising at least two isocyanate-reactive active hydrogen groups consisting essentially of amino groups.Type: GrantFiled: April 29, 1985Date of Patent: May 20, 1986Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, David T. McKeough, Michael M. Chau
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Patent number: 4569966Abstract: Polymeric microparticles and dispersions of polymeric microparticles in a liquid hydrocarbon are disclosed. The dispersions are prepared by reacting in dispersed form a preformed NCO-prepolymer containing a segment solvated by the liquid hydrocarbon and a segment insoluble in the liquid hydrocarbon with an active hydrogen-containing compound. Reaction proceeds to form polymeric microparticles which are dispersed in the liquid hydrocarbon. Also disclosed are the use of the polymeric microparticles in coating compositions and articles coated with the coating compositions.Type: GrantFiled: April 19, 1984Date of Patent: February 11, 1986Assignee: PPG Industries, Inc.Inventors: Robert M. Piccirilli, David T. McKeough, Wen-Hsuan Chang
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Patent number: 4543405Abstract: There are disclosed herein polyurethane polyols and coating compositions formulated therewith. The polyurethane polyols are prepared by typically reacting low molecular weight polyols in amounts sufficient to produce reaction products containing a significant amount of unreacted starting polyols which can be subsequently removed by means such as vacuum distillation.Type: GrantFiled: October 1, 1984Date of Patent: September 24, 1985Assignee: PPG Industries, Inc.Inventors: Ronald R. Ambrose, Wen-Hsuan Chang, David T. McKeough, John R. Peffer
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Patent number: 4540766Abstract: This invention encompasses a high solids, solvent-based, thermosetting composition having the necessary hardness and flexibility that make it an effective coating for both elastomeric and hard metal substrates. The composition comprises a polyester-urethane polyol and a curing agent such as an aminoplast.Type: GrantFiled: October 3, 1983Date of Patent: September 10, 1985Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, Ronald R. Ambrose, David T. McKeough, Samuel Porter, Jr., Delano R. Eslinger
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Patent number: 4540771Abstract: There are disclosed herein polyester polyols, resinous polyols thereof, and coating compositions formulated therewith. The polyester polyols are prepared by typically reacting a large excess of low molecular weight polyols with polycarboxylic acid or functional equivalents thereof. The polyols are employed in amounts sufficient to produce reaction products containing a significant amount of unreacted polyols which can be subsequently removed by means such as vacuum distillation.Type: GrantFiled: October 1, 1984Date of Patent: September 10, 1985Assignee: PPG Industries, Inc.Inventors: Ronald R. Ambrose, Wen-Hsuan Chang, David T. McKeough, John R. Peffer
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Patent number: 4535132Abstract: This invention encompasses a high solids, solvent-based, thermosetting composition having the necessary hardness and flexibility that make it an effective coating for both elastomeric and metal substrates. The composition comprises a polyester polyol and a curing agent such as an aminoplast.Type: GrantFiled: December 12, 1983Date of Patent: August 13, 1985Assignee: PPG Industries, Inc.Inventors: Ronald R. Ambrose, Wen-Hsuan Chang, David T. McKeough, Delano R. Eslinger, Samuel Porter, Jr.
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Patent number: 4501872Abstract: Disclosed is a liquid composition comprising a homogeneous reaction product of a hydrophobic polyol and an organosilicon-containing material. The organosilicon-containing material comprises an organosilicon-containing substance free of functional groups attached to carbon and essentially free of alkali metal ions, having atoms bonded directly to silicon, all of which atoms are selected from O, N, and/or Cl. The organosilicon-containing substance additionally has moieties directly bonded to silicon which are displaceable by reaction with water and/or alcohol. At least a part of the organosilicon-containing substance is hydrolyzed to a compound or a mixture of compounds containing a residual amount of the moieties directly bonded to silicon which are displaceable.Type: GrantFiled: January 31, 1983Date of Patent: February 26, 1985Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, David T. McKeough, John R. Peffer
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Patent number: 4485228Abstract: This invention encompasses a high solids, solvent-based, thermosetting two-component coating composition having the necessary flexibility, hardness and durability that make it an effective coating for both elastomeric and hard metal substrates. The composition comprises a polyester-urethane polyol and a curing agent comprising a polyisocyanate.Type: GrantFiled: October 3, 1983Date of Patent: November 27, 1984Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, Ronald R. Ambrose, David T. McKeough, Samuel Porter, Jr., Byron K. Johnston
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Patent number: 4467081Abstract: Disclosed is a resin comprising a reaction product prepared by partially reacting to homogeneity a hydrophobic polyol and an organosilicon-containing material comprising an organosilicon-containing substance. The organosilicon-containing substance has atoms bonded directly to silicon, all of which atoms are selected from oxygen, nitrogen, and/or chlorine, and additionally has moieties directly bonded to silicon which are easily displaceable by reaction with water and/or alcohol. At least a part of the organosilicon-containing substance is hydrolyzed. The reaction product is homogeneous and contains residual hydroxyl moieties from the hydrophobic polyol and residual moieties bonded directly to silicon which are easily displaceable. the reaction product is capable of self-curing, optionally with a catalyst, by reaction with moisture and/or with the residual hydroxyl moieties, of the residual moieties directly bonded to silicon which are easily displaceable.Type: GrantFiled: January 31, 1983Date of Patent: August 21, 1984Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, David T. McKeough, John R. Peffer