Patents by Inventor Sophia Dashevsky

Sophia Dashevsky has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8921439
    Abstract: A monohydroxy cyclic phosphonate substantially free of polyhydroxy phosphonate is employed as a reactive flame retardant in flexible polyurethane.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: December 30, 2014
    Assignee: ICL-IP America Inc.
    Inventors: Andrew Piotrowski, Anantha N. Desikan, Sophia Dashevsky
  • Publication number: 20130237623
    Abstract: A monohydroxy cyclic phosphonate substantially free of polyhydroxy phosphonate is employed as a reactive flame retardant in flexible polyurethane.
    Type: Application
    Filed: September 19, 2011
    Publication date: September 12, 2013
    Applicant: ICL-IP America Inc.
    Inventors: Andrew Piotrowski, Anantha N. Desikan, Sophia Dashevsky
  • Publication number: 20120123004
    Abstract: There is provided herein a composition comprising: (a) a flexible polyurethane foam-forming mixture and; an effective flame retarding amount of at least one non halogen-containing cyclic phosphate ester of the general formula (I): wherein R1 and R2, are the same or different, linear or branched alkyl group containing from up to about 10 carbon atoms, optionally containing heteroatom substituents, provided that R1 and R2 are not both methyl; and R3-R7 are each independently hydrogen or the same or different linear or branched alkyl group containing up to about 4 carbon atoms, optionally containing heteroatom substituents; provided that the cyclic phosphate ester is a liquid or is substantially soluble in at least one different liquid flame retardant and/or the hydroxyl-containing component of the flexible polyurethane foam-forming mixture; the cyclic phosphate ester of formula (I) contains at least 8.
    Type: Application
    Filed: February 2, 2010
    Publication date: May 17, 2012
    Inventors: Jeffrey Stowell, Ronald Pirrelli, Sophia Dashevsky
  • Patent number: 8058322
    Abstract: A flexible polyurethane foam-forming composition and the flexible polyurethane foam obtained therefrom contain, as flame-retardant additive, a halogen-free phosphonate compound which is substantially unreactive for isocyanate, contains at least about 5 weight percent phosphorus, has an acid value of about 2 mg KOH/g or less, a volatility as measured by thermogravimetric analysis not exceeding a 5.0 percent weight loss at a temperature of about 150° C., and a weight average molecular weight of from about 200 to about 2000.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: November 15, 2011
    Assignee: ICL-IP America Inc.
    Inventors: Andrew M. Piotrowski, Sophia Dashevsky, Sergei Levchik, Yingzhong Guo
  • Patent number: 7759522
    Abstract: A crude phosphate ester product can be purified by first washing it with chelating agent composition (such as a dilute acidic solution) and then, preferably, water, drying the resulting product, and then treating the resulting product with an acid scavenger, as exemplified by an epoxy-containing compound, such as 3,4-epoxy cyclohexyl methyl-3,4-epoxy cyclohexyl carboxylate.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: July 20, 2010
    Assignee: Supresta LLC
    Inventors: Danielle A. Bright, Eric W. Burkhardt, Antoon ten Kate, Sophia Dashevsky, John Tomko
  • Publication number: 20100174007
    Abstract: A haloneopentyl dialkylphosphate ester possesses the general formula wherein each X is Br or Cl, provided at least two of X are Br, and R1 and R2 each independently is alkyl of up to 12 carbon atoms.
    Type: Application
    Filed: January 2, 2008
    Publication date: July 8, 2010
    Inventors: Yinzhong Guo, Andrew M. Piotrowski, Anantha N. Desikan, Sophia Dashevsky
  • Publication number: 20090281205
    Abstract: A flexible polyurethane foam-forming composition and the flexible polyurethane foam obtained therefrom contain, as flame-retardant additive, a halogen-free phosphonate compound which is substantially unreactive for isocyanate, contains at least about 5 weight percent phosphorus, has an acid value of about 2 mg KOH/g or less, a volatility as measured by thermogravimetric analysis not exceeding a 5.0 percent weight loss at a temperature of about 150° C., and a weight average molecular weight of from about 200 to about 2000.
    Type: Application
    Filed: May 30, 2006
    Publication date: November 12, 2009
    Inventors: Andrew M. Piotrowski, Sophia Dashevsky, Sergei Levchik, Yingzhong Guo
  • 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
  • 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
  • Publication number: 20050020800
    Abstract: Epoxy resins that are suitable for forming epoxy laminates that meet a UL-94 rating of V—O comprise a hydroxy-terminated oligomeric phosphonate comprising the repeating structure —OP(?O)(R)OArylene-, where R is alkyl, as a flame retardant.
    Type: Application
    Filed: October 4, 2002
    Publication date: January 27, 2005
    Inventors: Sergei Levchik, sophia Dashevsky, Edward Weil, Qiang Yao
  • Publication number: 20040116728
    Abstract: A crude phosphate ester product can be purified by first washing it with chelating agent composition (such as a dilute acidic solution) and then, preferably, water, drying the resulting product, and then treating the resulting product with an acid scavenger, as exemplified by an epoxy-containing compound, such as 3,4-epoxy cyclohexyl methyl-3,4-epoxy cyclohexyl carboxylate.
    Type: Application
    Filed: January 16, 2004
    Publication date: June 17, 2004
    Inventors: Danielle A. Bright, Eric W. Burkhardt, Antoon ten Kate, Sophia Dashevsky, John Tomko
  • Patent number: 6717005
    Abstract: A polyphosphate ester composition consisting essentially of an effective amount of a cycloaliphatic epoxy composition for reduction of the total acid number of the composition. The phosphate ester is of the formula: where R can be aryl or alkaryl, R′ can be arylene, arylene-alkylene-arylene, or alkylene, and n ranges from about 1 to about 5.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: April 6, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Eric W. Burkhardt, Danielle A. Bright, Sergei Levchik, Sophia Dashevsky, Mark Buczek
  • Publication number: 20030212287
    Abstract: A polyphosphate ester composition consisting essentially of an effective amount of a cycloaliphatic epoxy composition for reduction of the total acid number of the composition.
    Type: Application
    Filed: May 13, 2002
    Publication date: November 13, 2003
    Inventors: Eric W. Burkhardt, Danielle A. Bright, Sergei Levchik, Sophia Dashevsky, Mark Buczek
  • Patent number: 6100372
    Abstract: A polymer composition, which is useful as a surfactant, formed by the reaction of an alkylene oxide (such as ethylene oxide), carbon dioxide, and a monocarboxylic acid chain terminator, such as one containing a fatty alkyl group.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: August 8, 2000
    Assignee: Akzo Nobel NV
    Inventors: Ki-Soo Kim, Sophia Dashevsky, Claude B. Peterson
  • Patent number: 5833886
    Abstract: The thermostability of an aromatic polyphosphate composition an be improved by the addition of an effective amount of a hydroxy-terminated aromatic polyphosphate composition for such.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: November 10, 1998
    Assignee: Akzo Nobel NV
    Inventors: Sophia Dashevsky, Danielle A. Bright
  • Patent number: 5679288
    Abstract: The disclosure teaches a blend of a predominant amount of a polyphosphate flame retardant and an effective amount of a liquid crystalline additive for viscosity reduction and compatibilization when blended with a thermoplastic polymer, as compared to use of just the polyphosphate flame retardant alone. The polyphosphate can comprise resorcinol bis(diphenyl phosphate) and/or its higher oligomers. The liquid can be a liquid crystalline segmented block copolymer or a liquid crystalline oligomer.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: October 21, 1997
    Assignee: Akzo Nobel nv
    Inventors: Ki-Soo Kim, Sophia Dashevsky, Alan Aaronson, Johst Herman Burk
  • Patent number: 5508338
    Abstract: A single phase, compatiblized blend comprising a polycarbonate resin, a polyester resin, and no more than about 5%, by weight of the combined weight of polycarbonate and polyester, of a liquid crystalline additive as a compatibilizer.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: April 16, 1996
    Assignee: Akzo Nobel NV
    Inventors: Ki-Soo Kim, Sophia Dashevsky
  • Patent number: 5498358
    Abstract: A lubricant composition for an internal combustion engine contains a lubricant basestock and an effective amount for antiwear properties of an oligomer containing at least one mesogenic segment and at least one flexible segment. The oligomer can have a centrally disposed flexible segment, e.g., derived from a polyalkylene glycol such as polypropylene glycol, with mesogenic segments as end caps or it can contain alternating flexible and mesogenic segments, e.g., comprising a repeat unit comprising aromatic ester groups and at least one linear polyalkylene spacer. The oligomer preferably has a molecular weight of from about 1,000 to about 4,000 and is present at from about 0.1% to about 3%, by weight of the basestock.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: March 12, 1996
    Assignee: Akzo Nobel N.V.
    Inventors: Ki-Soo Kim, Sophia Dashevsky, Johst H. Burk
  • Patent number: 5426212
    Abstract: The reaction of methyl p-hydroxybenzoate and a .alpha.,.omega.-alkanediol, in the presence of a transesterification catalyst, such as a metal alkoxide and/or metal acetate, can be used to synthesize an .alpha.,.omega.-bis(p-hydroxybenzoyloxy)alkane monomer.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: June 20, 1995
    Assignee: Akzo Nobel N.V.
    Inventors: Ki-Soo Kim, Sophia Dashevsky, Stanley W. Palmaka
  • Patent number: 5418299
    Abstract: Blends can be formed which comprise a flexible coil polymer substrate, e.g., of a poly(alkylene terephthalate), and a thermotropic, essentially liquid crystalline oligomer which comprises aromatic units and at least one linear polyalkylene spacer. These blends can be used to form fibers or molded articles.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: May 23, 1995
    Assignee: Akzo Nobel N.V.
    Inventors: Ki-Soo Kim, Sophia Dashevsky, Jian-Lin Liu, Stanley W. Palmaka