Patents by Inventor Vrijesh K. Singh

Vrijesh K. Singh 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).

  • Castor oil derived hydroxy functional acrylic copolymers for surface coating applications
    Patent number: 10040886
    Abstract: Acrylic polyols comprising hydroxy functional acrylic copolymers/resin involving an acrylic backbone having modified castor oil sourced hydroxyl functionalities and synthesized by co-reacting modified hydroxy functional Castor Oil with variety of acrylic monomers, styrene or its derivatives and optionally hydroxyalkyl acrylates/methacrylates and ethylenic monomer through solution polymerization in presence of an initiator. The hydroxyl functionality is solely or partially imparted through renewable Castor Oil wherein the resins were synthesized at upto 100% solids and at hydroxyl values ranging from 25-150 (mg KOH/gm). The synthesized resins when cured with suitable polyisocyanates or amino resin cross-linkers provided tough, glossy and chemical & weather resistant coatings.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: August 7, 2018
    Assignee: Asian Paints Ltd.
    Inventors: Rajeev K. Jain, Vrijesh K. Singh, M. L. V. Apparao, Mosongo Moukwa
  • CASTOR OIL DERIVED HYDROXY FUNCTIONAL ACRYLIC COPOLYMERS FOR SURFACE COATING APPLICATIONS
    Publication number: 20160090431
    Abstract: Acrylic polyols comprising hydroxy functional acrylic copolymers/resin involving an acrylic backbone having modified castor oil sourced hydroxyl functionalities and synthesized by co-reacting modified hydroxy functional Castor Oil with variety of acrylic monomers, styrene or its derivatives and optionally hydroxyalkyl acrylates/methacrylates and ethylenic monomer through solution polymerization in presence of an initiator. The hydroxyl functionality is solely or partially imparted through renewable Castor Oil wherein the resins were synthesized at upto 100% solids and at hydroxyl values ranging from 25-150 (mg KOH/gm). The synthesized resins when cured with suitable polyisocyanates or amino resin cross-linkers provided tough, glossy and chemical & weather resistant coatings.
    Type: Application
    Filed: July 22, 2013
    Publication date: March 31, 2016
    Inventors: Rajeev K. Jain, Vrijesh K. Singh, M. L.V. Apparao, Mosongo Moukwa