Patents by Inventor Sandipan Dutta

Sandipan Dutta 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: 10526480
    Abstract: The present disclosure is directed to an ultra-high solids emulsion comprising a plurality of multiphase polymer particles, in which the multiphase particles comprises an acrylic-based copolymer derived from monomers comprising an alkyl methacrylate; an alkyl acrylate; a hydroxyalkyl acrylate; at least one or more acids; a vinyl aromatic compound; and a vinyl ester or vinyl lactam, a copolymerizable surfactant, at least one or more alkylphenol ethoxylate (APE) free nonionic surfactants, and at least one or more APE free anionic surfactants in aqueous medium in the presence of an initiator and a buffer. Additionally, methods for preparing such ultra-high solids emulsion and applications of such emulsion in coatings and adhesives are disclosed.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: January 7, 2020
    Assignee: HERCULES LLC
    Inventors: Leo Ternorutsky, Lars Kilian, Sandipan Dutta, Kang I. Lee, Nathan K. Ramsey
  • Publication number: 20180134888
    Abstract: The present disclosure is directed to an ultra-high solids emulsion comprising a plurality of multiphase polymer particles, in which the multiphase particles comprises an acrylic-based copolymer derived from monomers comprising an alkyl methacrylate; an alkyl acrylate; a hydroxyalkyl acrylate; at least one or more acids; a vinyl aromatic compound; and a vinyl ester or vinyl lactam, a copolymerizable surfactant, at least one or more alkylphenol ethoxylate (APE) free nonionic surfactants, and at least one or more APE free anionic surfactants in aqueous medium in the presence of an initiator and a buffer. Additionally, methods for preparing such ultra-high solids emulsion and applications of such emulsion in coatings and adhesives are disclosed.
    Type: Application
    Filed: November 13, 2017
    Publication date: May 17, 2018
    Applicant: HERCULES LLC
    Inventors: Leo Ternorutsky, Lars Kilian, Sandipan Dutta, Kang I. Lee, Nathan K. Ramsey
  • Patent number: 7999030
    Abstract: An ethylenically unsaturated vegetable oil is modified by the addition of an enophile or dienophile having an acid, ester or anhydride functionality. The modified vegetable oil is then reacted with a polyethylene glycol (PEG) derivative along with a functional vinyl monomer or a polyethylene glycol derivative that contains a vinyl functionality to form a vegetable oil derivative. The vegetable oil derivative is useful in forming latexes and coatings.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: August 16, 2011
    Assignee: Southern Diversified Products, LLC
    Inventors: Shelby F. Thames, James W. Rawlins, David Delatte, Sandipan Dutta
  • Patent number: 7786194
    Abstract: Certain exemplary embodiments comprise a composition prepared from a Class 1 member, a Class 2 member, and a Class 3 member, said Class 1 member contributing approximately 0.1 percent to approximately 10 percent by dry weight of said composition, said Class 2 member contributing approximately 1 percent to approximately 10 percent by dry weight of said composition, and said Class 3 member contributing an amount up to a balance by dry weight of said composition.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: August 31, 2010
    Assignee: AgroShield, LLC
    Inventors: Joel Zychick, Shelby F. Thames, Sandipan Dutta, Sharathkumar K. Mendon, Oliver W. Smith
  • Publication number: 20090281233
    Abstract: A process for making VOC-compliant adhesives, sealants, or mastic compositions for use in residential and industrial construction applications, and the products made thereby utilizing VOC-compliant solvents in the polymerization process.
    Type: Application
    Filed: May 6, 2009
    Publication date: November 12, 2009
    Inventors: Mark A. Vrana, Sandipan Dutta, Nicholas J. Ford, Denny Doyle, Tobias N. Thompson, David E. Wortman, E. Jeffrey Davis
  • Patent number: 7361710
    Abstract: An ethylenically unsaturated vegetable oil is modified by the addition of an enophile or dienophile having an acid, ester or anhydride functionality. The modified vegetable oil is then reacted with a functional vinyl monomer to form a vegetable oil derivative. The vegetable oil derivative is useful in forming latexes and coatings.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: April 22, 2008
    Assignee: Southern Diversified Products, LLC
    Inventors: Shelby F. Thames, Oliver W. Smith, James M. Evans, Sandipan Dutta, Lianzhou Chen
  • Publication number: 20070155865
    Abstract: Certain exemplary embodiments comprise a composition prepared from a Class 1 member, a Class 2 member, and a Class 3 member, said Class 1 member contributing approximately 0.1 percent to approximately 10 percent by dry weight of said composition, said Class 2 member contributing approximately 1 percent to approximately 10 percent by dry weight of said composition, and said Class 3 member contributing an amount up to a balance by dry weight of said composition.
    Type: Application
    Filed: April 2, 2004
    Publication date: July 5, 2007
    Inventors: Joel Zychick, Shelby Thames, Sandipan Dutta, Sharathkumar Mendon, Oliver Smith
  • Publication number: 20060211795
    Abstract: An ethylenically unsaturated vegetable oil is modified by the addition of an enophile or dienophile having an acid, ester or anhydride functionality. The modified vegetable oil is then reacted with a polyethylene glycol (PEG) derivative along with a functional vinyl monomer or a polyethylene glycol derivative that contains a vinyl functionality to form a vegetable oil derivative. The vegetable oil derivative is useful in forming latexes and coatings.
    Type: Application
    Filed: February 1, 2006
    Publication date: September 21, 2006
    Inventors: Shelby Thames, James Rawlins, David Delatte, Sandipan Dutta
  • Publication number: 20050203246
    Abstract: An ethylenically unsaturated vegetable oil is modified by the addition of an enophile or dienophile having an acid, ester or anhydride functionality. The modified vegetable oil is then reacted with a functional vinyl monomer to form a vegetable oil derivative. The vegetable oil derivative is useful in forming latexes and coatings.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 15, 2005
    Inventors: Shelby Thames, Oliver Smith, James Evans, Sandipan Dutta, Lianzhou Chen