Patents by Inventor Bhanu Kiran Vankayala

Bhanu Kiran Vankayala 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).

  • Method for preparing a poly(phenylene ether) and poly(phenylene ether) prepared thereby
    Patent number: 11472920
    Abstract: A method for preparing a poly(phenylene ether) includes feeding air to a continuous flow reactor that contains a reaction mixture including a phenol, a transition metal catalyst, and an organic solvent; and oxidatively polymerizing the reaction mixture at a specified temperature and pressure to form a poly(phenylene ether). The reaction mixture has a residence time in the continuous flow reactor of less than or equal to 30 minutes. Poly(phenylene ether)s prepared by the method and articles including the poly(phenylene ether)s are also described.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: October 18, 2022
    Assignee: SHPP GLOBAL TECHNOLOGIES B.V.
    Inventors: Sivakumar Sreeramagiri, Samir Anapat, Rajesh Chowdhury, Ravinath Manchana, Bhanu Kiran Vankayala, Hareesh Shamrao Deshpande
  • METHOD OF PREPARING A POLY(PHENYLENE ETHER), POLY(PHENYLENE ETHER) MADE THEREBY, AND ARTICLE COMPRISING THE POLY(PHENYLENE ETHER)
    Publication number: 20210347944
    Abstract: A method for preparing a poly(phenylene ether) includes feeding an oxygen-containing gas phase to a single continuous flow reactor containing a reaction mixture, and oxidatively polymerizing the reaction mixture to form a poly(phenylene ether) in the single reactor. The reaction mixture includes a phenol, a transition metal catalyst, and an organic solvent. A poly(phenylene ether) made by the method and articles including the poly(phenylene ether) are also disclosed. Methods for quantifying phenol concentration and poly(phenylene ether) molecular weight in the reaction mixture are also discussed.
    Type: Application
    Filed: October 10, 2019
    Publication date: November 11, 2021
    Inventors: Sivakumar SREERAMAGIRI, Samir ANAPAT, Rajesh CHOWDHURY, Ravinath MANCHANA, Bhanu Kiran VANKAYALA, Shweta HEGDE, Ramesh NARAYANA, Yogesha SUBBAIAH
  • METHOD FOR PREPARING A POLY(PHENYLENE ETHER) AND POLY(PHENYLENE ETHER) PREPARED THEREBY
    Publication number: 20200231750
    Abstract: A method for preparing a poly(phenylene ether) includes feeding air to a continuous flow reactor that contains a reaction mixture including a phenol, a transition metal catalyst, and an organic solvent; and oxidatively polymerizing the reaction mixture at a specified temperature and pressure to form a poly(phenylene ether). The reaction mixture has a residence time in the continuous flow reactor of less than or equal to 30 minutes. Poly(phenylene ether)s prepared by the method and articles including the poly(phenylene ether)s are also described.
    Type: Application
    Filed: November 14, 2019
    Publication date: July 23, 2020
    Inventors: Sivakumar Sreeramagiri, Samir Anapat, Rajesh Chowdhury, Ravinath Manchana, Bhanu Kiran Vankayala, Hareesh Shamrao Deshpande
  • Method and device for carrying out a reaction between at least two reactants
    Patent number: 10336613
    Abstract: A method for carrying out a reaction between at least two reactants in a liquid reaction solution in at least one reaction zone so as to produce a reaction product includes carrying out a reaction continuously in a reaction flow for the at least one reaction zone in an extension of the at least one reaction zone as far as at least one reaction product outlet, introducing each of the at least two reactants over the extension of the at least one reaction zone via inlets in which the reaction flow is introduced, and removing the reaction product via the at least one reaction product outlet.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: July 2, 2019
    Assignee: KARLSRUHER INSTITUT FUER TECHNOLOGIE
    Inventors: Manfred Kraut, Roland Dittmeyer, Bhanu Kiran Vankayala