Patents by Inventor Keith M. Russ

Keith M. Russ 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).

  • Purification means
    Patent number: 6414110
    Abstract: The invention provides a novel process for improving the glass transition temperatures of polymers by partitioning the polymer between immiscible solvents to remove the low molecular weight polymer from the desired product.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: July 2, 2002
    Assignee: Triquest LP
    Inventors: Michael T. Sheehan, James R. Sounik, Keith M. Russ
  • Process for preparing poly(4-hydroxystyrene)
    Patent number: 5578687
    Abstract: A process for preparing a poly(hydroxystyrene) which comprises the steps of (a) heating a carbinol under decomposition conditions in the presence of a solvent for a sufficient period of time to form hydroxystyrene, said solvent having a boiling point in substantially the same range as said hydroxystyrene; and (b) polymerizing said hydroxystyrene under suitable polymerization conditions of pressure and temperature and for a sufficient period of time to form poly(hydroxystyrene).
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: November 26, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: James R. Sounik, Keith M. Russ
  • Process for preparing acetoxystyrene
    Patent number: 5563289
    Abstract: The present invention provides a unique and novel way of producing an acetoxystyrene. In this new process which comprises a single step, a mixture of (a) a carbinol, (b) an acetylating agent, and (c) an acid catalyst is dehydrated under suitable dehydration conditions of temperature and pressure to form said acetoxystyrene.
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: October 8, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: James R. Sounik, Keith M. Russ
  • Process for preparing 4-hydroxystyrene
    Patent number: 5493062
    Abstract: The present invention provides a unique and novel way of producing vinyl phenols such as p-vinyl phenol (4-hydroxystyrene--HSM). In this new process, p-.alpha.-aminoethylphenol (AEP) is heated under suitable deamination conditions of temperature and pressure and for a sufficient period of time to form the 4-hydroxystyrene (HSM).
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: February 20, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: James R. Sounik, William W. Wilkison, III, Keith M. Russ
  • Process for preparing acetoxystyrene
    Patent number: 5463108
    Abstract: The present invention provides a unique and novel way of producing 4-acetoxystyrene. In this new process, 4-hydroxystyrene is acetylated, in the presence of an acetylation agent, under suitable conditions of temperature and pressure and for a sufficient period of time to form acetoxystyrene.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: October 31, 1995
    Assignee: Hoechst Celanese Corporation
    Inventors: James R. Sounik, William W. Wilkison, III, Keith M. Russ, Lynn Massarelli
  • Process for preparing poly(4-hydroxystyrene)
    Patent number: 5463141
    Abstract: The present invention provides a unique and novel way of producing vinyl phenols such as poly(4-hydroxystyrene) (PHS). In this new process, p-.alpha.-aminoethylphenol (AEP) is heated under suitable conditions of temperature and pressure and for a sufficient period of time to form the poly(4-hydroxystyrene) (PHS).
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: October 31, 1995
    Assignee: Hoechst Clanese Corporation
    Inventors: James R. Sounik, William W. Wilkison, III, Keith M. Russ