Patents Assigned to Supresta U.S. LLC
  • Oligomeric, hydroxy-terminated phosphonates
    Patent number: 7449526
    Abstract: Epoxy resins that are suitable for forming epoxy laminates that meet a UL-94 rating of V-0 comprise a hydroxy-terminated oligomeric phosphonate comprising the repeating structure —OP(?O)(R)OArylene-, where R is alkyl, as a flame retardant.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: November 11, 2008
    Assignee: Supresta U.S. LLC
    Inventors: Sergei V Levchik, Sophia Dashevsky, Edward Weil, Qiang Yao
  • Low Heat Release and Low Smoke Reinforcing Fiber/Epoxy Composites
    Publication number: 20080057314
    Abstract: A composite material comprising reinforcing fiber and an adhesive composition comprising an epoxy resin, optionally a resin curing agent, a curing catalyst and a reactive phosphonate flame retardant and method of preparation thereof.
    Type: Application
    Filed: March 23, 2005
    Publication date: March 6, 2008
    Applicant: SUPRESTA U.S. LLC.
    Inventors: Sergei Levchik, Sophia Dashevsky, Andrew Piotrowski
  • Polyurethane foam containing flame retardant blend of non-oligomeric and oligomeric flame retardants
    Patent number: 7288577
    Abstract: A polyurethane foam can be flame retarded by the incorporation therein of a flame retardant blend that comprises: (a) a non-oligomeric non-halogenated organophosphorus flame retardant (e.g., a phosphate ester) that is adapted for use in a polyurethane foam formulation; and (b) an oligomeric organophosphorus flame retardant (e.g., a phosphate ester) having a phosphorus content of no less than about 10%, by weight, and at least three phosphate ester units therein.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: October 30, 2007
    Assignee: Supresta U.S. LLC
    Inventors: Larry L. Bradford, Emanuel Pinzoni, Barbara A. Williams, Theodore Halchak
  • Blend of organophosphorus flame retardant, lactone stabilizer, and phosphate compatibilizer
    Patent number: 7122135
    Abstract: A flame retardant blend, suitable for incorporation into a polyurethane foam, comprises: an oligomeric organophosphourus flame retardant, preferably an organophosphate, having a phosphorus content of no less than about 10%; a benzofuran-2-one stabilizer; and a monomeric phosphate ester containing alkyl and/or haloalkyl groups to act as a solubilizing addtive for the oligomeric organophosphorus flame retardant and benzofuran-2-one stabilizer.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: October 17, 2006
    Assignee: Supresta U.S. LLC
    Inventors: Barbara A. Williams, Lambertus A. DeKleine
  • Alkylation of triphenylphosphate
    Patent number: 7074737
    Abstract: A process for the alkylation of triphenylphosphate by reaction of triphenylphosphate with an olefin in the presence of an effective amount of a solid acid catalyst selected from the group consisting of at least one zeolite, heteropolyacid or salt thereof, metal triflate, non-aryl group-containing metal sulfonic acid, metal halide Lewis acid, or compatible mixture of any such catalyst.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: July 11, 2006
    Assignee: Supresta U.S. LLC
    Inventors: Alan J. Abramson, Anantha Desikan, Shuguang Zhang, Zongchao Zhang, James Liang