Patents Represented by Attorney Donna L. Seidel
  • Patent number: 5916686
    Abstract: Siloxane organic hybrid polymers and a method of making them by condensation polymerization reaction of organoalkoxysilane with an alkali metal carboxylic acid catalyst in the presence of organic film-forming polymers are disclosed.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: June 29, 1999
    Assignee: PPG Industries, Inc.
    Inventor: Chia-Cheng Lin
  • Patent number: 5648149
    Abstract: The purpose of the present invention is to provide novel primer compositions for use in bonding a thermoset polyurethane film to the surface of a polymeric substrate. The novel primer composition of the invention is an elastomeric polymer, particularly polyvinylpyrrolidinone, or a copolymer comprising vinylpyrrolidinone and alkyl acrylate or alkyl methacrylate. The construction of the article of the present invention comprises a transparent polymeric substrate, such as stretched acrylic, a primer layer of polyvinylpyrrolidinone or copolymer of vinylpyrrolidinone and alkyl acrylate or alkyl methacrylate on a surface thereof, and a film of thermoset polyurethane on the primer layer. The polyurethane is preferably a reaction product of isocyanate and a polyol such as polycaprolactone polyol, hexanediol carbonate polyol, cyclohexanedimethanol carbonate polyol, phthalate ester polyol, and hexanediol/cyclohexanedimethanol carbonate polyol.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: July 15, 1997
    Assignee: PPG Industries, Inc.
    Inventors: Thomas G. Rukavina, John B. Slobodnik
  • Patent number: 5496477
    Abstract: A composition and method for providing a non-formaldehyde durable press finish to cellulosic fabrics by employing polyphosphinocarboxylic acids are disclosed. The polyphosphinocarboxylic acid is preferably polyphosphinoacrylic acid, and is optimally used in combination with phosphonoalkylpolycarboxylic acid, and, for cost effectiveness, a low-cost polycarboxylic acid such as citric acid. The catalyst for the curing reaction is preferably a phosphorus-containing acid or alkali metal salt thereof such as a mixture of sodium monophosphate and sodium hypophosphite.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: March 5, 1996
    Assignee: PPG Industries, Inc.
    Inventors: Robert H. Tang, William A. Williams, Jr.
  • Patent number: 5496476
    Abstract: A composition and method for providing a non-formaldehyde durable press finish to cellulosic fabrics by employing phosphonoalkylpolycarboxylic acids are disclosed. The phosphonoalkylpolycarboxylic acid is optimally used in combination with another polycarboxylic acid, such as polyacrylic acid, and/or, for cost effectiveness, a low-cost polycarboxylic acid such as citric acid. The catalyst for the curing reaction is optimally a phosphorus-containing acid or alkali metal salt thereof, such as a mixture of sodium monophosphate and sodium hypophosphite.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: March 5, 1996
    Assignee: PPG Indutstries, Inc.
    Inventors: Robert H. Tang, William A. Williams, Jr.
  • Patent number: 5471554
    Abstract: Novel acrylic acid copolymer primer compositions are disclosed for bonding electroconductive metal oxide films to plastic substrates for electrochromic articles.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: November 28, 1995
    Assignee: PPG Industries, Inc.
    Inventors: Thomas G. Rukavina, John B. Slobodnik
  • Patent number: 5471338
    Abstract: An electrochromic article comprising plastic substrates and a method for constructing such an article are disclosed wherein two plastic substrates are coated with a primer to adhere an electroconductive metal oxide film, onto which are deposited an electrochromic film and a complementary film respectively. The two coated plastic substrates are assembled to form a cavity into which is placed a solution of monomers which are polymerized to form an ion-conducting copolymer.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: November 28, 1995
    Assignee: PPG Industries, Inc.
    Inventors: Phillip C. Yu, David L. Backfisch, Thomas G. Rukavina
  • Patent number: 5464657
    Abstract: A method for coating a moving substrate provides a coating having a chemical composition which varies continuously from the interface with the substrate to the opposite surface of the coating. The method involves directing a vapor coating composition toward a substrate surface and moving portions of the vapor in opposite directions. A vapor coating mixture may include a tin-containing precursor and a silicon-containing precursor. An accelerant, e.g. a phosphorus-containing precursor, may be used with the metal-containing precursors to increase the deposition rate of the coating. The coating deposited on the substrate has regions of continuously varying weight percent of silicon oxide and tin oxide as the distance from the substrate-coating interface increases, with the surface of the coating farthest from the substrate-coating interface being predominantly tin oxide.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: November 7, 1995
    Assignee: PPG Industries, Inc.
    Inventors: Patricia R. Athey, Douglas S. Dauson, David E. Lecocq, George A. Neuman, John F. Sopko, Royann L. Stewart-Davis
  • Patent number: 5417827
    Abstract: Silicon-nickel cathode targets comprising 3 to 18 weight percent nickel are disclosed for sputtering low absorbance coatings of silicon-nickel alloy in atmospheres comprising reactive gases such as nitrogen, oxygen and mixtures thereof which may further comprise inert gas such as argon to form nitrides, oxides, and oxynitrides as well as metallic films. The presence of nickel in the cathode target in the range of 3 to 18 weight percent provides target stability and enhanced sputtering rates over targets of silicon alone or alloyed with aluminum, while maintaining a low coating refractive index and low absorbance, not only when sputtering in oxygen to produce an oxide coating, but also when sputtering in nitrogen or a mixture of nitrogen and oxygen to produce coatings of silicon-nickel nitride or oxynitride respectively.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: May 23, 1995
    Assignee: PPG Industries, Inc.
    Inventor: James J. Finley
  • Patent number: 5418039
    Abstract: A patterned light and heat reflective product comprising a substrate with a discontinuous pattern of light and heat reflective coating is disclosed, along with a method for its production, comprising the steps of applying a pattern of resist material to a substrate surface, depositing a continuous light and heat reflective coating over the resist pattern, removing the resist material and thereby also removing the portion of light and heat reflective material overlying the resist material to produce a light and heat reflective coating in a pattern complementary to the pattern of resist material.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: May 23, 1995
    Assignee: PPG Industries, Inc.
    Inventor: Thomas M. Carter
  • Patent number: 5401579
    Abstract: Siloxane organic hybrid polymers and a method of making them by condensation polymerization reaction of organoalkoxysilane in the presence of organic film-forming polymers are disclosed.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: March 28, 1995
    Assignee: PPG Industries, Inc.
    Inventors: John D. Basil, Chia-Cheng Lin, Robert M. Hunia
  • Patent number: 5395698
    Abstract: A coated article and method of producing it are disclosed wherein the iridescence caused by the difference between the refractive index of a transparent substrate and the refractive index of a metal oxide coating is reduced by means of two intermediate layers, the first of which, closest to the substrate, has a refractive index higher than the refractive index of the substrate but lower than the refractive index of the second, and the second has a refractive index higher than the refractive index of the first but lower than the refractive index of the metal oxide coating. The thicknesses of the two intermediate layers for optimizing a neutral appearance are determined by the thickness and refractive index of the metal oxide coating.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: March 7, 1995
    Assignee: PPG Industries, Inc.
    Inventors: George A. Neuman, Royann L. Stewart-Davis
  • Patent number: 5385964
    Abstract: A silica-free, abrasion resistant and ultraviolet radiation resistant coating is disclosed comprising an organic UV absorbing compound such as hydroxybenzophenone in an inorganic oxide matrix formed by the hydrolysis and condensation of an organo alkoxysilane and a silicon other metal alkoxide.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: January 31, 1995
    Assignee: PPG Industries, Inc.
    Inventors: John D. Basil, Chia-Cheng Lin, Robert M. Hunia
  • Patent number: 5348995
    Abstract: A novel amine-free antistatic agent comprising the reaction product of diethanolamine and a fatty acid or fatty acid ester, neutralized with a strong acid is disclosed, along with plastic composition treated with said antistatic composition, as well as a method for making the antistatic composition and methods for using it to produce plastic articles with antistatic properties.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: September 20, 1994
    Assignee: PPG Industries, Inc.
    Inventor: Barbara J. Anderson
  • Patent number: 5344712
    Abstract: Siloxane organic hybrid polymers and a method of making them by condensation polymerization reaction of organoalkoxysilane in the presence of organic film-forming polymers are disclosed wherein cerium oxide is incorporated for the attenuation of ultraviolet radiation.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: September 6, 1994
    Assignee: PPG Industries, Inc.
    Inventors: John D. Basil, Chia-Cheng Lin
  • Patent number: 5334322
    Abstract: A method for reducing abrasion of plastic surfaces in moving contact with parts of processing equipment is disclosed involving the use of a novel lubricant which is the reaction product of a short chain alcohol and a short chain oxide, preferably glycerol and a mixture of ethylene oxide and propylene oxide, in aqueous solution.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: August 2, 1994
    Assignee: PPG Industries, Inc.
    Inventor: William A. Williams, Jr.
  • Patent number: 5328645
    Abstract: An alkoxysilane sol-gel composition and method for its production are disclosed whereby an alkoxysilane of the general formulaSi(OR).sub.4wherein R is an organic radical such as methyl, ethyl, propyl or butyl is hydrolyzed with an acid catalyst and the resulting acidic sol is further hydrolyzed and condensed in the presence of an alkaline component which accelerates gelation to form an inorganic oxide network.
    Type: Grant
    Filed: January 4, 1989
    Date of Patent: July 12, 1994
    Assignee: PPG Industries, Inc.
    Inventors: Chia-Cheng Lin, John D. Basil
  • Patent number: 5328768
    Abstract: A method and article are disclosed wherein a glass substrate is provided with a more durable non-wetting surface by treatment with a perfluoroalkyl alkyl silane and a fluorinated olefin telomer on a surface which comprises a silica primer layer.
    Type: Grant
    Filed: November 29, 1991
    Date of Patent: July 12, 1994
    Assignee: PPG Industries, Inc.
    Inventor: George B. Goodwin
  • Patent number: 5328975
    Abstract: An organoalkoxysilane/metal oxide sol-gel composition and method for its production are disclosed whereby an organoalkoxysilane of the general formulaR.sub.x Si(OR').sub.4-xwherein R is an organic radical, R' is a low molecular weight alkyl radical, and x is less than 4 and may be zero, is partially hydrolyzed in organic solution and reacted with a titanium alkoxide of the general formula Ti(OR'').sub.4 wherein R'' is a lower alkyl radical. The composition is hydrolyzed, dried and heat treated to form a silicon oxide/titanium oxide abrasion-resistant coating on a substrate with high ultraviolet radiation absorbance.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: July 12, 1994
    Assignee: PPG Industries, Inc.
    Inventors: Michael E. Hanson, Robert M. Hunia, Chia-Cheng Lin
  • Patent number: 5316854
    Abstract: An ultraviolet radiation absorbing coating comprising cerium oxide in an inorganic oxide matrix formed by the hydrolysis and condensation of alkoxysilane and/or other metal alkoxide or oxide which has a higher absorbance per unit thickness of coating by virtue of its much higher concentration of colloidal particles in said matrix and a reduced tendency to craze when exposed to temperatures in excess of 1000.degree. C. and/or temperature cycling between ambient temperature and 1000.degree. C. by virtue of heating a coated article at elevated temperature between 500.degree. C. and 1100.degree. C. before cooling the coated article.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: May 31, 1994
    Assignee: PPG Industries, Inc.
    Inventors: Chia-Cheng Lin, John D. Basil, Robert M. Hunia, Peter P. Bihuniak
  • Patent number: 5308705
    Abstract: A method and article are disclosed wherein a metal, polymeric or inorganic coated substrate is provided with a durable non-wetting surface by treatment with a perfluoroalkyl alkyl silane and a fluorinated olefin telomer.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: May 3, 1994
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, George B. Goodwin