Patents Assigned to PRC-Desoto International, Inc.
  • Patent number: 6217945
    Abstract: In a process for overcoating a substrate having a cured primer coating with a curable topcoat which when cured is swellable by a stripping solvent, a non-volatile polar material is applied to the primed substrate from an aqueous liquid vehicle before coating with the topcoat. The polar material facilitates the removal of the topcoat from the primer by the stripping solvent, as is required for example when repainting aircraft. The polar material has sufficiently high affinity for the primer surface that it is not washed off the primer surface by water rinsing or by application of the topcoat paint.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: April 17, 2001
    Assignee: PRC-DeSoto International, Inc.
    Inventor: Michael Fowler
  • Patent number: 6172179
    Abstract: A polythioether includes a structure having the formula I —R1—[—S—(CH2)2—O—[—R2—O—]m—(CH2)2—S—R1—]n—  I wherein R1 denotes a C2-6 n-alkylene, C3-6 branched alkylene, C6-8cycloalkylene or C6-10 alkylcycloalkylene group, —[(—CH2—)p—X—]q—(—CH2—)r—, or —[(—CH2—)p—X—]q—(—CH2—)r— in which at least one —CH2— unit is substituted with a methyl group, R2 denotes a C2-6 n-alkylene, C2-6 branched alkylene, C6-8 cycloalkylene or C6-10 alkylcycloalkylene group, or —[(—CH2—)p—X—]q—(—CH2—)r—, X denotes one selected from the group consisting of O, S and —NR6, R6 denotes H or methyl, m is a rational number from 0 to 10, n is an integer from 1 to 60, p is an integer from 2 to 6, q is an integer from
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: January 9, 2001
    Assignee: PRC-Desoto International, Inc.
    Inventors: Jonathan Doherty Zook, Suzanna DeMoss, David Weldon Jordan, Chandra B. Rao
  • Patent number: 6136446
    Abstract: This invention relates generally to spacer assemblies for insulating glass units. More specifically, this invention relates to a single component desiccant matrix which can be applied to the interior of a spacer assembly at room temperature. Upon exposure to the ambient atmosphere, the desiccant matrix irreversibly cures.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: October 24, 2000
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Bruce Virnelson, Jin Song
  • Patent number: 6136910
    Abstract: This invention relates generally to spacer assemblies for insulating glass units. More specifically, this invention relates to a single component desiccant matrix which can be applied to the interior of a spacer assembly at room temperature. Upon exposure to the ambient atmosphere, the desiccant matrix irreversibly cures.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: October 24, 2000
    Assignee: PRC-Desoto International, Inc.
    Inventors: Bruce Virnelson, Jin Song
  • Patent number: 6059867
    Abstract: A non-chromate, corrosion-inhibiting coating composition for metal surfaces includes at least one inhibitor selected from the group consisting of phosphates, phosphosilicates, silicates, and mixtures thereof, at least one inhibitor selected from the group consisting of titanates, zinc salts, and mixtures thereof, and a carrier for these inhibitors, the carrier capable of placing the inhibitors in proximity with the metal surface. In a preferred embodiment, the coating composition further includes a borate such as boric acid, and a succinate. A preferred phosphate includes calcium dihydrogen phosphate, and sodium titanium oxide is a preferred titanate. The zinc salt can include zinc phosphate or zinc cyanamide.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: May 9, 2000
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Kathrine J. Lewis, Jak Aklian
  • Patent number: D419776
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: February 1, 2000
    Assignee: PRC-DeSoto International, Inc.
    Inventors: John Steven Frost, Nguyen Thai Dang