Patents by Inventor John Agryropoulbs

John Agryropoulbs 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).

  • Preparation of isocyanurate group containing polyisocyanate mixtures
    Publication number: 20060155095
    Abstract: Isocyanurate polyisocyanates compositions derived from bis(isocyanotomethyl)cyclohexane are disclosed. The compositions are prepared by cyclizing (i) 1,3-bis(isocyanotomethyl)cyclohexane or 1,4-bis(isocyanotomethyl)cyclohexane or (ii) an isomeric mixture of two or more of cis-1,3-bis(isocyanotomethyl)cyclohexane, trans-1,3-bis(isocyanotomethyl)cyclohexane, cis-1,4-bis(isocyanotomethyl)cyclohexane and trans-1,4-bis(isocyanotomethyl)cyclohexane in the presence of a trimerization catalysts, and then deactivating these catalysts. The isocyanurate polyisocyanates can be further modified to contain urethane, urea, biuret, allophanate, imino-s-triazine, uretonimine or carbodiimide moieties.
    Type: Application
    Filed: February 27, 2004
    Publication date: July 13, 2006
    Inventors: Rory Daussin, Jorge Jimenez, Debkumar Bhattacharjee, John Agryropoulbs