Patents by Inventor Janice L. Greene

Janice L. Greene 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 liquid polyamide from dinitrile and diamine
    Patent number: 4554345
    Abstract: This invention describes a process for preparing liquid polyamides comprising contacting a nitrile, amine and water in the presence of a carbon dioxide catalyst.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: November 19, 1985
    Assignee: The Standard Oil Company
    Inventors: Janice L. Greene, Roman Loza
  • Preparation of polyamide by contacting diamine, dinitrile, water, dicarboxylic acid
    Patent number: 4501881
    Abstract: This invention describes a process for preparing polyamides comprising contacting a dinitrile, a diamine and water in the presence of a dicarboxylic acid. In one embodiment, nylon-6,6 is prepared by contacting adiponitrile, hexamethylene diamine and water in the presence of adipic acid.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: February 26, 1985
    Assignee: The Standard Oil Company
    Inventors: Janice L. Greene, Roman Loza
  • Electrochemical maintenance of optimum catalytic activity in copper-catalyzed nitrile hydrolysis processes
    Patent number: 4381977
    Abstract: An electrochemical method is provided for maintaining the optimum activity of copper-containing catalysts for the production of amides from nitriles and water. Also provided is a process for producing amides from nitriles and water by hydrolysis.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: May 3, 1983
    Assignee: The Standard Oil Company
    Inventors: V. Frances Gaylor, Janice L. Greene, Arthur F. Miller, Marty A. Pichler
  • Preparation of polyamide from dinitrile, diamine, water, and CO.sub.2 catalyst
    Patent number: 4380623
    Abstract: This invention describes a process for preparing amides comprising contacting a nitrile, amine and water in the presence of a carbon dioxide catalyst. In one embodiment, nylon-6,6 is prepared by contacting adiponitrile, hexamethylene diamine and water in the presence of carbon dioxide.
    Type: Grant
    Filed: April 3, 1981
    Date of Patent: April 19, 1983
    Assignee: Standard Oil Company
    Inventors: Janice L. Greene, Roman Loza
  • Electrochemical maintenance of optimum catalytic activity in copper-catalyzed nitrile hydrolysis processes
    Patent number: 4313803
    Abstract: An electrochemical method is provided for maintaining the optimum activity of copper-containing catalysts for the production of amides from nitriles and water. Also provided is a process for producing amides from nitriles and water by hydrolysis.
    Type: Grant
    Filed: April 1, 1980
    Date of Patent: February 2, 1982
    Assignee: The Standard Oil Company
    Inventors: V. Frances Gaylor, Janice L. Greene, Arthur F. Miller, Marty A. Pichler
  • Manufacture of allene from acetone
    Patent number: 4301319
    Abstract: Acetone is converted to allene by contacting the acetone with an alumina catalyst, such as .gamma.-alumina, at a temperature between about 300.degree. and 700.degree. C.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: November 17, 1981
    Assignee: Standard Oil Company
    Inventor: Janice L. Greene
  • Manufacture of carbamates from cyanogen
    Patent number: 4301087
    Abstract: Carbamates, such as ethyl carbamate, are prepared by contacting an alcohol, such as ethanol, with cyanogen and water in the presence of a dipolar, aprotic solvent, such as acetonitrile, and an acid catalyst, such as hydrochloric acid.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: November 17, 1981
    Assignee: Standard Oil Company
    Inventor: Janice L. Greene
  • Process for polymerization of composition comprising (1) alpha,beta-unsaturated monocarboxylic acid or ammonium salt thereof and (2) ammonia
    Patent number: 4283524
    Abstract: Polymers containing amide linkages can be formed in good yields by the dehydrative addition polymerization of alpha, beta-unsaturated monocarboxylic acids or the ammonium salts thereof. These polymers are suitable for use as fibers, plastics, films and molding resins.
    Type: Grant
    Filed: April 23, 1979
    Date of Patent: August 11, 1981
    Assignee: The Standard Oil Company
    Inventor: Janice L. Greene
  • Process for producing 2-pyrrolidone
    Patent number: 4042599
    Abstract: A process for producing 2-pyrrolidone by the simultaneous hydrolysis and hydrogenation of succinonitrile at elevated temperatures and at hydrogen pressures below 500 psi in the presence of a hydrogenation catalyst.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: August 16, 1977
    Assignee: The Standard Oil Company
    Inventor: Janice L. Greene
  • Process for producing 2-pyrrolidone
    Patent number: 4036836
    Abstract: A process for producing 2-pyrrolidone which comprises the simultaneous hydrolysis and hydrogenation of succinonitrile at elevated temperatures and pressures in the presence of a hydrogenation catalyst consisting essentially of nickel boride.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: July 19, 1977
    Assignee: Standard Oil Company
    Inventor: Janice L. Greene
  • Process for producing 2-pyrrolidone
    Patent number: 3966763
    Abstract: A process for producing 2-pyrrolidone by the simultaneous hydrolysis and hydrogenation of succinonitrile at elevated temperatures and pressures in the presence of a hydrogenation catalyst and a reaction promoter selected from the group consisting of 2-pyrrolidone and N-alkyl-2-pyrrolidone wherein the alkyl group contains from 1 to 6 carbon atoms.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: June 29, 1976
    Assignee: Standard Oil Company
    Inventor: Janice L. Greene