Patents by Inventor Mukund Parthasarathy

Mukund Parthasarathy 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 of preparing a poly (arylene ether) and a poly (arylene ether) prepared thereby
    Patent number: 6437084
    Abstract: A method of preparing a poly(arylene ether) includes oxidatively coupling a monohydric phenol in a reaction solution at a reaction temperature that exceeds the cloud point temperature of the reaction solution. The oxidative coupling occurs in the presence of a metal complex catalyst, and when the catalyst includes an amine ligand, the method facilitates incorporation of the amine ligand into the poly(arylene ether) resin. The amine-incorporated poly(arylene ether) resins prepared by the method are useful in the preparation of higher molecular weight poly(arylene ether) resins and compatibilized blends of poly(arylene ether) resins with other thermoplastics.
    Type: Grant
    Filed: November 12, 2001
    Date of Patent: August 20, 2002
    Assignee: General Electric Company
    Inventors: Joop Birsak, Hugo Gerard Eduard Ingelbrecht, David Parrillo, Mukund Parthasarathy, Probjot Singh
  • Method of preparing a poly(arylene ether), and a poly(arylene ether) prepared thereby
    Patent number: 6407200
    Abstract: A method of preparing a poly(arylene ether) includes oxidatively polymerizing a monohydric phenol in solution, concentrating the solution by removing a portion of the solvent to form a concentrated solution having a cloud point, Tcloud, and combining the concentrated solution with an anti-solvent to precipitate the poly (arylene ether), wherein the concentrated solution has a temperature of at least about (Tcloud−10° C.) immediately before it is combined with the anti-solvent. The method reduces the formation of undesirably fine particles in the product poly(arylene ether).
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: June 18, 2002
    Assignee: General Electric Company
    Inventors: Probjot Singh, Hugo Gerard Eduard Ingelbrecht, David Parrillo, Mukund Parthasarathy