Patents by Inventor S SHUBASHREE

S SHUBASHREE 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).

  • Methods of manufacture of 2-hydrocarbyl-3,3-bis(hydroxyaryl)phthalimidines
    Patent number: 9822070
    Abstract: A method for the manufacture of a 2-hydrocarbyl-3,3-bis(hydroxyaryl)phthalimidine composition comprises: reacting a phthalimide with a phenol in the presence of a catalyst and optionally a solvent at an elevated temperature to form the 2-hydrocarbyl-3,3-bis(hydroxyaryl)phthalimidine composition.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: November 21, 2017
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Venkata Ramanarayanan Ganapathy Bhotla, Bhaskar Reddy Aluri, S Shubashree
  • METHODS OF MANUFACTURE OF 2-HYDROCARBYL-3,3-BIS(HYDROXYARYL)PHTHALIMIDINES
    Publication number: 20160340307
    Abstract: A method for the manufacture of a 2-hydrocarbyl-3,3-bis(hydroxyaryl)phthalimidine composition comprises: reacting a phthalimide of formula (2) with a phenol of formula (3) I (2) I (3) in the presence of a catalyst and optionally a solvent at an elevated temperature to form the 2-hydrocarbyl-3,3-bis(hydroxyaryl)phthalimidine composition, wherein the 2-hydrocarbyl-3,3-bis(hydroxyaryl)phthalimidine composition comprises a 2-hydrocarbyl-3,3-bis(hydroxyaryl)phthalimidine of formula (1) I (1) wherein in formulas (1), (2) and (3), R1 is hydrogen, C1-6 alkyl, C1-6 alkoxy, or phenyl optionally substituted with 1 to 5 C1-6 alkyls, each occurrence of R2 and R3 is independently a C1-6 alkyl, and p and q are independently 0 to 4.
    Type: Application
    Filed: January 14, 2015
    Publication date: November 24, 2016
    Inventors: VENKATA RAMANARAYANAN GANAPATHY BHOTLA, BHASKAR REDDY ALURI, S SHUBASHREE