Patents Represented by Attorney Spencer D. Conard

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  • Enhancing color stability to sterilizing radiation of polymer compositions
    Patent number: 4939185
    Abstract: Compounds having defined thioether groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: July 3, 1990
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Polycarbonate container having internal layers of amorphous polyamide
    Patent number: 4937130
    Abstract: A container comprised of an inner aromatic polycarbonate layer, an outer aromatic polycarbonate layer, and an intermediate amorphous polyamide layer between the inner polycarbonate layer and the outer polycarbonate layer. The amorphous polyamide intermediate layer provides the container with enhanced processability, excellent gas barrier properties and hot fill capabilities.
    Type: Grant
    Filed: January 18, 1989
    Date of Patent: June 26, 1990
    Assignee: General Electric Company
    Inventors: Donald C. Clagett, David M. Handler, Louis M. Maresca, Sheldon J. Shafer, G. Fred Willard
  • Process for preparing thermoplastic composites
    Patent number: 4937031
    Abstract: Thermoplastic composites of polycarbonate and siloxane-polycarbonate block copolymer layers are produced by a coextrusion process. The composites are useful for the production of high-strength and impact resistant laminate glazing panels.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: June 26, 1990
    Assignee: General Electric Company
    Inventor: Herbert L. Curry
  • Method of surface impregnating hot polycarbonate sheet with an ultraviolet radiation screener composition
    Patent number: 4937026
    Abstract: An ultraviolet radiation screening composition for on-line surface impregnating hot polycarbonate sheet. The composition includes an ultraviolet radiation screener and carrier solution which contains respective amounts of dipropylene glycol methyl ether, tripropylene glycol methyl ether, 1,2 propanediol and 1,4 butanediol. The carrier solution provides a desired level of volatility and aggressiveness for on-line surface impregnation of hot aromatic polycarbonate sheet and film.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: June 26, 1990
    Assignee: General Electric Company
    Inventors: John C. Goossens, Ronald F. Sieloff
  • Coated polycarbonate articles
    Patent number: 4929506
    Abstract: Coated polycarbonate articles, such as sheet and film, are coated with a hard, abrasion and chemical resistant coating which is the photoreaction product of an acrylated urethane oligomer, a difunctional acrylate monomer and preferably also a monofunctional olefinic monomer. These coated articles may be thermoformed or flexed without cracking or delamination of the protective coating. A specific embodiment of the invention is a coated flexible siloxane-polycarbonate block copolymer.
    Type: Grant
    Filed: December 31, 1987
    Date of Patent: May 29, 1990
    Assignee: General Electric Company
    Inventors: Stuart R. Kerr, III, James E. Moore
  • Filled core materials having unfilled outer attached layers
    Patent number: 4927675
    Abstract: Improved composite materials are disclosed, in which a thermoplastic core layer has at least one inorganic or organic constituent dispersed therein. A first coextruded thermoplastic outer layer is attached to a first surface of the core layer, and is substantially free of dispersed inorganic and organic constituents, while a second coextruded thermoplastic outer layer is attached to a second surface of the core layer and is also substantially free of dispersed inorganic and organic constituents.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: May 22, 1990
    Assignee: General Electric Company
    Inventors: Ronald L. Adams, Kirk L. Kimbel, Clayton B. Quinn
  • Polycarbonate/polyphthalate carbonate blends exhibiting good flame resistance
    Patent number: 4923933
    Abstract: Disclosed are blends of (a) an aromatic brominated polycarbonate; and (b) a polyphthalatecarbonate. Preferably, the blends also contain an amount of a silicone-polyimide. The blends exhibit good flame resistance and low smoke generation.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: May 8, 1990
    Assignee: General Electric Company
    Inventor: Herbert L. Curry
  • Polyphthalatecarbonate/polycarbonate resin blends
    Patent number: 4918149
    Abstract: A polyphthalatecarbonate/polycarbonate blend exhibits improved resistance to hazing and yellowing from prolonged exposure to ultraviolet radiation. The blend is useful in the production of transparent, ultraviolet radiation stable sheets and films.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: April 17, 1990
    Assignee: General Electric Company
    Inventors: Donald C. Clagett, Daniel W. Fox, Sheldon J. Shafer, Paul D. Sybert
  • UV-stabilized melamine-polyol coated thermoplastic substrate
    Patent number: 4913974
    Abstract: Coated article has a thermoplastic substrate and a surface coating of a transparent ultraviolet light-resistant polymer which is the reaction product of a melamine compound, a polyol, and a multimeric benzotriazole compound. The coating of the coated article retains its UV absorbance during curing and exposure to elevated temperatures.
    Type: Grant
    Filed: December 31, 1987
    Date of Patent: April 3, 1990
    Assignee: General Electric Company
    Inventors: James E. Moore, Arnold Factor, Peter M. Miranda
  • Photocurable acrylic coating composition
    Patent number: 4902724
    Abstract: A photocured acrylic coating comprised of the photoreaction products of:(i) at least one photocurable polyfunctional acrylate monomer;(ii) at least one acetophenone photoinitiator; and(iii) at least one active ultraviolet radiation absorber selected from benzotriazoles, cyanoacrylate, and hydroxybenzophenones. The coating is substantially or completely cured and provides improved protection to the substrate against ultraviolet radiation.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: February 20, 1990
    Assignee: General Electric Company
    Inventor: James E. Moore
  • Radiation-curable coating for thermoplastic substrates
    Patent number: 4902578
    Abstract: A novel radiation curable coating composition for thermoplastic substrates contains a polyfunctional acrylic monomer, a mono-, di- or trifunctional acrylic monomer, a thermoplastic or elastomeric polymer and a photoinitiator. The coatings can be cured to hard, abrasion resistant coatings, yet retain a significant degree of residual unsaturation. The residual unsaturation and the thermoplastic or elastomeric polymer provide excellent adhesion between the coating and topcoats.
    Type: Grant
    Filed: December 31, 1987
    Date of Patent: February 20, 1990
    Assignee: General Electric Company
    Inventor: Stuart R. Kerr, III
  • Photocurable acrylic coating composition
    Patent number: 4902725
    Abstract: A photocured acrylic coat comprised of the photoreaction products of:(i) at least one photocurable polyfunctional acrylate monomer;(ii) at least one phenyl ketone photoinitiator; and(iii) at least one active ultraviolet radiation absorber selected from benzotriazoles, cyanoacrylates, and hydroxybenzophenones. The coating is substantially completely or completely cured and provides improved protection to the substrate against ultraviolet radiation. The coating is also nonopaque or transparent.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: February 20, 1990
    Assignee: General Electric Company
    Inventor: James E. Moore
  • Enhancing color stability to sterilizing radiation of polymer compositions
    Patent number: 4882366
    Abstract: Compounds having defined nitrogen containing functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: November 21, 1989
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Enhancing color stability to sterilizing radiation of polymer compositions
    Patent number: 4880854
    Abstract: Compounds having defined triazine functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: November 14, 1989
    Assignee: General Electric Company
    Inventor: Roger W. Avakian
  • Enhancing color stability to sterilizing radiation of polymer compositions
    Patent number: 4880850
    Abstract: Compounds having defined functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: February 7, 1989
    Date of Patent: November 14, 1989
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Enhancing color stability to sterilizing radiation of polymer compositions
    Patent number: 4880853
    Abstract: Compounds havign defined ketone functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: November 14, 1989
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Enhancing color stability to sterilizing radiation of polymer compositions
    Patent number: 4880855
    Abstract: Compounds having defined sulfone functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: November 14, 1989
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Thermoplastic blends containing polyamide and epoxy functional compound
    Patent number: 4877848
    Abstract: Thermoplastic blends of polyamide with a resin selected from the group consisting of polycarbonate, poly(ester-carbonate), and polyarylate have improved physical properties with the incorporation therein of an epoxy functional compatibilizing agent.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: October 31, 1989
    Assignee: General Electric Company
    Inventor: Louis M. Maresca
  • Enhancing color stability to sterlizing radiation of polymer compositions
    Patent number: 4876309
    Abstract: Pyran-derived compounds having defined functional groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: October 24, 1989
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor
  • Enhancing color stability to sterilizing radiation of polymer compositions
    Patent number: 4874783
    Abstract: Compounds having defined unsaturated alicyclic groups are described which color stabilize aromatic carbonate polymers or blends therewith upon exposure to sterilizing radiation.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: October 17, 1989
    Assignee: General Electric Company
    Inventors: Linda H. Nelson, Roger W. Avakian, Arnold Factor