Natural Cellulose Substrate Patents (Class 427/499)
  • Patent number: 6821631
    Abstract: A method of treating substrates, such as wood, including the steps of applying an alkali silicate solution to one or more substrates and applying an alkali borate solution with boric oxide (B2O3) content to the substrates. Substrates that have been treated using the present method include a borate-silicate polymer within the substrate. When the present substrates are wood, wood products, or green lumber, they may be used to build structures.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: November 23, 2004
    Assignee: Wood treatment Products, Inc.
    Inventors: Robert N. Grantham, Robert R. Weaver, III
  • Patent number: 6093257
    Abstract: A method of cleaning a substrate by covering the substrate with a composition in a sufficient amount to clean the substrate. The composition includes a substantial amount of at least one low viscosity organic compound which includes a radiation curable group. The compound is reclaimed for further use. The reclaimed compound may be used as a reactive diluent in a radiation curable coating composition.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: July 25, 2000
    Assignee: DSM N.V.
    Inventor: George Pasternack
  • Patent number: 5994424
    Abstract: A free-radical curable polish composition is described. The composition can be applied and cured as an ultra thin film on finished surfaces to provide enhanced chemical and mar resistance. The composition comprises an aqueous emulsion including an olefin-functional polymer or an olefin-functional prepolymer, and a silicone or silicone copolymer preferably with photoinitiators for UV and EB cure. The polish/emulsion can be applied, for example, to wet the surface of nitrocellulose lacquer wood finishes. The polish wet surface is first wiped to remove excess polish and thereafter exposed to UV radiation to provide a thin, polymerized protective film.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: November 30, 1999
    Assignee: Lilly Industries, Inc.
    Inventors: Eugen Safta, Frank Chen, Greg Muselman, James V. Mirante, Danny R. Linthicum
  • Patent number: 5801033
    Abstract: This invention provides novel methods for the formation of biocompatible membranes around biological materials using photopolymerization of water soluble molecules. The membranes can be used as a covering to encapsulate biological materials or biomedical devices, as a "glue" to cause more than one biological substance to adhere together, or as carriers for biologically active species. Several methods for forming these membranes are provided. Each of these methods utilizes a polymerization system containing water-soluble macromers, species which are at once polymers and macromolecules capable of further polymerization. The macromers are polymerized using a photoinitiator (such as a dye), optionally a cocatalyst, optionally an accelerator, and radiation in the form of visible or long wavelength UV light. The reaction occurs either by suspension polymerization or by interfacial polymerization.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 1, 1998
    Assignee: The Board of Regents, The University of Texas System
    Inventors: Jeffrey A. Hubbell, Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Neil P. Desai, Syed F. A. Hossainy
  • Patent number: 5470652
    Abstract: The support sheet for photographic printing paper of the present invention includes a substrate paper sheet, a front surface composite resin coating layer formed on the front surface of the substrate paper sheet and including an inside cured resin layer and outermost cured resin layer including, as a main component, an electron beam-curing product of electron beam-curable unsaturated organic compound, and a back surface resin coating layer formed on the back surface of the substrate paper sheet and including a film-forming synthetic resin, and is produced by a process including the steps of forming at least one inside coating liquid layer including an electron beam-curable unsaturated organic compound on the front surface of the substrate paper sheet;separately forming an outermost coating liquid layer containing an electron beam-curable unsaturated organic compound on a shaping surface and applying thereto a first electron beam irradiation to provide an outermost cured resin layer;superimposing the outermost
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: November 28, 1995
    Assignee: Oji Paper Co., Ltd
    Inventors: Takaharu Miura, Hiroyuki Nemoto, Masataka Ito, Masafumi Kobayashi, Chieko Tanaka