Patents Assigned to Nu-Chem, Inc.
  • Patent number: 6855401
    Abstract: A composite system capable of protecting a substrate from a jet fire including a lower layer of an active fire protective material and an upper layer of a fire protective material. The upper layer forms an open cell matrix when exposed to a jet fire to permit passage of gasses from the lower layer to ambient. The upper layer comprises a fill of refractory material and protects the system during initial exposure to a hyperthermal condition. The upper layer swells on exposure to hyperthermal conditions, but swells less than the lower layer.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: February 15, 2005
    Assignee: Nu-Chem, Inc.
    Inventors: Edward W. Taylor, Jr., Rubin Feldman, James A. Rippe, Jr.
  • Patent number: 6001437
    Abstract: A glass fiber capable of withstanding temperatures in excess of 1900.degree. F. is produced by treating a glass, preferably E-glass, fiber. The glass fiber is first leached with selected acids, and then the leached fiber is treated with organo-metallic materials of low viscosity, such as a dispersion of low molecular weight water-in-oil emulsion of dimethyl polysiloxane. The fiber is used in such applications as embedding it in a fire-resistant active coating material or embedding it into one surface of a polyolefin or composite plastic, such as a polypropylene sheet. The treated fiberglass can be used as a sole component or in concert with a fire-resistant or fire retardant material to further enhance its fire-resistant properties.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: December 14, 1999
    Assignee: Nu-Chem, Inc.
    Inventors: Allen W. Thorpe, Edward W. Taylor, Jr., Rubin Feldman, Malkit S. Deogon
  • Patent number: 5974784
    Abstract: A heat shield for an exhaust system of a vehicle includes a resinified spaced layer fabric having at least one inner layer, at least one outer layer, and at least one spacer between the inner layer or layers and the outer layer or layers to form one or more insulative spaces. The heat shield includes an emissivity reducing material. The insulative space is between about one and about eight millimeters thick, to reduce convective heat transfer.
    Type: Grant
    Filed: October 12, 1998
    Date of Patent: November 2, 1999
    Assignee: Nu-Chem, Inc.
    Inventor: Rubin Feldman
  • Patent number: 5900281
    Abstract: An intumescent composition for protecting a substrate against fire and thermal extremes includes a polymer binder containing a small amount of platinum, preferably in the form of a coordination complex. The binder is a non-silicone based polymer, and the platinum acts as a catalyst under fire conditions to protect the char and increase char life, thereby increasing the time of protection. The binder is preferably an epoxy, most preferably an epoxy polysulfide. The platinum is preferably mixed with nickel, most preferably as a nickel-platinum ammonia complex, the complex being present in an amount of less than two percent by weight of the composition. The complexes are preferably tetrafluoroborate salts. The composition also preferably includes a solvent, a carbonific, a spumific, and a polymerization catalyst.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: May 4, 1999
    Assignee: Nu-Chem, Inc.
    Inventors: Malkit S. Deogan, Rubin Feldman, Allen W. Thorpe, Edward W. Taylor, Jr.
  • Patent number: 5591791
    Abstract: A thin-film intumescent composition for protecting a substrate against fire and thermal extremes includes a polymer binder, a solvent, a carbonific, a spumific, a catalyst, and at least some additives chosen from a source of carbon, finely divided elemental boron, a metal stearate adduct with alumina, and a conjugated fatty acid, preferably a conjugated triglyceride. The compositions provide chars having greatly increased efficiency, greater thickness, better physical characteristics including cell structure and physical toughness, and greater resistance to oxidation by fires and by chemicals present in fires.
    Type: Grant
    Filed: June 27, 1995
    Date of Patent: January 7, 1997
    Assignee: Nu-Chem, Inc.
    Inventor: Malkit S. Deogon
  • Patent number: 5372846
    Abstract: A product and process by which heat from hyperthermal sources is blocked by compositions including coordination complexes. The compositions provide a sustained, uniform, and controlled method of heat blockage in an artificial boundary layer or heat exchange matrix. When the compositions are incorporated in a coating composition, the rate of discharge of the coating medium is continuous, gradual, and controlled to the desired rate level for a given thermal environment.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: December 13, 1994
    Assignee: Nu-Chem, Inc.
    Inventors: Rubin Feldman, Sina Ghatan