Patents by Inventor Raman Subrayan

Raman Subrayan 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).

  • SULFONATE ESTERS AS LATENT ACID CATALYSTS
    Publication number: 20130216723
    Abstract: The present invention is directed towards novel sulfonic acid esters as catalysts for crosslinking of polymers having hydroxyl, carboxyl, and amide functional groups with a crosslinking agent and resin compositions containing the same. The present invention provides polymeric film coatings which have superior hardness, impact resistance, adhesion, improved blister resistance, salt spray characteristics and flexibility. These catalysts are especially effective in coil primer formulations containing calcium ion exchange anticorrosive pigments, where traditional blocked acid catalysts are ineffective.
    Type: Application
    Filed: March 21, 2013
    Publication date: August 22, 2013
    Applicant: King Industries
    Inventors: Farouk Abi-Karam, Ramanathan Ravichandran, Raman Subrayan, Richard A. Abramshe
  • Sulfonate esters as latent acid catalysts
    Patent number: 8431730
    Abstract: The present invention is directed towards novel sulfonic acid esters as catalysts for crosslinking of polymers having hydroxyl, carboxyl, and amide functional groups with a crosslinking agent and resin compositions containing the same. The present invention provides polymeric film coatings which have superior hardness, impact resistance, adhesion, improved blister resistance, salt spray characteristics and flexibility. These catalysts are especially effective in coil primer formulations containing calcium ion exchange anticorrosive pigments, where traditional blocked acid catalysts are ineffective.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: April 30, 2013
    Assignee: King Industries
    Inventors: Farouk Abi-Karam, Ramanathan Ravichandran, Raman Subrayan, Richard A. Abramshe
  • Sulfonate esters as latent acid catalysts
    Publication number: 20090104363
    Abstract: The present invention is directed towards novel sulfonic acid esters as catalysts for crosslinking of polymers having hydroxyl, carboxyl, and amide functional groups with a crosslinking agent and resin compositions containing the same. The present invention provides polymeric film coatings which have superior hardness, impact resistance, adhesion, improved blister resistance, salt spray characteristics and flexibility. These catalysts are especially effective in coil primer formulations containing calcium ion exchange anticorrosive pigments, where traditional blocked acid catalysts are ineffective.
    Type: Application
    Filed: October 2, 2008
    Publication date: April 23, 2009
    Inventors: Farouk Abi-Karam, Ramanathan Ravichandran, Raman Subrayan, Richard A. Abramshe