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Shripathy Vilasagar

age ~73

from Charlotte, NC

Also known as:
  • Shri Vilasagar
  • Shailaja Vilasagar
  • Hemalatha Vilasagar
  • Smitha Vilasagar
  • Y R
  • Shri R
  • Vilasagar Shripathy

Shripathy Vilasagar Phones & Addresses

  • Charlotte, NC
  • 109 Wedgewood Dr, Parkersburg, WV 26104 • 304-4858196
  • Vienna, WV
  • Shawnee Mission, KS
  • Leavenworth, KS
  • Overland Park, KS
  • Midland, MI

Us Patents

  • Enhanced Polymerization Process

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  • US Patent:
    6784253, Aug 31, 2004
  • Filed:
    Jul 23, 2002
  • Appl. No.:
    10/200877
  • Inventors:
    Shripathy Vilasagar - Parkersburg WV
    Vern Lowry - Ottawa IL
    Dane M. Ferraris - Parkersburg WV
    Ke Feng - Vienna WV
    Robert E. Colborn - Niskayuna NY
    Matthew Hal Littlejohn - Green Island NY
    David Francis Townsend - Loganville GA
  • Assignee:
    General Electric Company - Pittsfield MA
  • International Classification:
    C08L 5104
  • US Classification:
    525316, 525 86, 525314, 525263
  • Abstract:
    An emulsion polymerization process for the preparation of polybutadiene grafted with styrene and acrylonitrile monomers in a reaction system is provided. The resultant product has a low end content of unreacted residual monomers, low yellowness index, and improved impact strength. The diene rubber is prepared via a process wherein a chain transfer agent is added on a continuous basis to give a rubber substrate having a low crosslink density. In one embodiment of the invention, the process includes charging the reaction system with a pre-selected diene emulsion with a low crosslink density, adding a first portion of at least one of a styrene monomer and acrylonitrile monomer to the diene emulsion, adding to the reaction system, over a predetermined time, an initiator and a second portion of acrylonitrile and styrene monomer, and polymerizing the catalyzed reaction mixture of diene substrate, styrene and acrylonitrile to form ABS graft polymers. In another embodiment, a third monomer is added after the conversion rate of the monomers is greater than 98%.
  • Core-Shell Particle, Method, And Composition

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  • US Patent:
    8153713, Apr 10, 2012
  • Filed:
    Nov 7, 2008
  • Appl. No.:
    12/266968
  • Inventors:
    Amol Adhikrao Mohite - Bangalore,
    Jaykisor Pal - West Bengal,
    Sathya Narayanan - Bangalore,
    Satishkumar H. Mahanth - Mysore,
    Albin Peter Berzinis - Delmar NY,
    Shripathy Vilasagar - Parkersburg WV,
  • Assignee:
    Sabic Innovative Plastics IP B.V.
  • International Classification:
    C08K 5/5419
    C08G 77/442
  • US Classification:
    524266, 524268, 525100, 525105, 525106, 525431, 525446, 528 25, 528 32, 528 34, 528 37, 528 38
  • Abstract:
    A core-shell particle is formed by a method that includes forming a crosslinked polyorganosiloxane core, reacting a graftlinking agent with the crosslinked polyorganosiloxane core, and polymerizing a poly(alkenyl aromatic) shell around the graftlinking agent-functionalized polyorganosiloxane core. The method produces a core-shell particle with improved adhesion between shell and core. The core-shell particle is useful as an impact modifier in thermoplastic compositions.
  • Method For Reducing Stringiness Of A Resinous Composition During Hot Plate Welding

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  • US Patent:
    2006006, Mar 30, 2006
  • Filed:
    Sep 29, 2004
  • Appl. No.:
    10/953721
  • Inventors:
    Sandeep Dhawan - Vienna WV,
    Shripathy Vilasagar - Parkersburg WV,
  • International Classification:
    B32B 37/00
  • US Classification:
    156309900
  • Abstract:
    Disclosed is a method for reducing stringiness during hot plate welding of an article comprising a resinous composition which comprises at least one step of contacting with water a surface of the article to be welded. The method also results in improved cycle time for preparation of the final article.
  • Weatherable Resinous Composition With Improved Heat Resistance

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  • US Patent:
    2006006, Mar 30, 2006
  • Filed:
    Sep 29, 2004
  • Appl. No.:
    10/953724
  • Inventors:
    Sandeep Dhawan - Vienna WV,
    Satish Gaggar - Parkersburg WV,
    Patricia Sun - Parkersburg WV,
    Shripathy Vilasagar - Parkersburg WV,
  • International Classification:
    C08F 8/00
  • US Classification:
    525191000
  • Abstract:
    Disclosed are compositions comprising: (i) a rubber modified thermoplastic resin comprising a discontinuous elastomeric phase dispersed in a rigid thermoplastic phase, wherein at least a portion of the rigid thermoplastic phase is grafted to the elastomeric phase, and wherein the elastomeric phase comprises a polymer having structural units derived from at least one (C-C)alkyl(meth)acrylate monomer; (ii) a second polymer consisting essentially of structural units derived from at least one (C-C)alkyl(meth)acrylate monomer; and optionally (iii) a third polymer comprising structural units derived from at least one alkenyl aromatic monomer and at least one monoethylenically unsaturated nitrile monomer prepared in a separate polymerization step and added to the composition. In other embodiments the present invention comprises articles made from said compositions.
  • Method For Reducing Stringiness Of A Resinous Composition During Hot Plate Welding

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  • US Patent:
    2006009, May 4, 2006
  • Filed:
    Nov 4, 2004
  • Appl. No.:
    10/981121
  • Inventors:
    Satish Gaggar - Parkersburg WV,
    Shripathy Vilasagar - Parkersburg WV,
  • International Classification:
    C08L 77/00
  • US Classification:
    525178000
  • Abstract:
    Disclosed is a method for reducing stringiness during hot plate welding of an article comprising at least one rubber modified thermoplastic resin, which comprises the step of including an effective amount of a polyamide in the composition of the article to be welded; wherein said resin comprises a discontinuous elastomeric phase dispersed in a rigid thermoplastic phase, and wherein at least a portion of the rigid thermoplastic phase is grafted to the elastomeric phase. The method also results in improved cycle time for preparation of the final article. Final articles made by the said method are also disclosed.
  • Method For Reducing Stringiness Of A Resinous Composition During Hot Plate Welding

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  • US Patent:
    2008028, Nov 20, 2008
  • Filed:
    Nov 1, 2007
  • Appl. No.:
    11/933718
  • Inventors:
    Sandeep Dhawan - Vienna WV,
    Shripathy Vilasagar - Parkersburg WV,
  • Assignee:
    SABIC INNOVATIVE PLASTICS IP BV - Pittsfield MA
  • International Classification:
    B32B 37/00
  • US Classification:
    156281
  • Abstract:
    Disclosed is a method for reducing stringiness during hot plate welding of an article comprising a resinous composition which comprises at least one step of contacting with water a surface of the article to be welded. The method also results in improved cycle time for preparation of the final article.
  • Low Gloss Polycarbonate Blends Obtained By Using Hydroxy Functionalized Graft Copolymer

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  • US Patent:
    5310791, May 10, 1994
  • Filed:
    Feb 28, 1992
  • Appl. No.:
    7/843127
  • Inventors:
    Shripathy Vilasagar - Parkersburg WV
  • Assignee:
    General Electric Company - Pittsfield MA
  • International Classification:
    C08L 6900
  • US Classification:
    525 67
  • Abstract:
    A thermoplastic blend composition is provided containing an aromatic polycarbonate and a hydroxy functional graft copolymer. The compositions exhibit reduced gloss and are useful as molding resins.
  • Low Gloss Polycarbonate/Abs Blends Obtained By Using A Hydroxy Functional Rigid Polymer

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  • US Patent:
    5236990, Aug 17, 1993
  • Filed:
    Feb 28, 1992
  • Appl. No.:
    7/843662
  • Inventors:
    Shripathy Vilasagar - Parkersburg WV
  • Assignee:
    General Electric Company - Pittsfield MA
  • International Classification:
    C08L 6900
    C08L 5502
    C08L 2514
  • US Classification:
    525 67
  • Abstract:
    A thermoplastic blend composition is provided containing an aromatic polycarbonate, a graft copolymer and a hydroxy functional rigid polymer such as styrene-acrylonitrilehydroxyalkyl methacrylate terpolymer. The compositions exhibit low gloss and are useful as molding resins.

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