Patents by Inventor Ronald J. McKinney

Ronald J. McKinney 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).

  • Enantioselective hydrocyanation of aromatic vinyl compounds
    Patent number: 5312957
    Abstract: The invention provides a process for enantioselective hydrocyanation of aromatic vinyl compounds which produces nonracemic mixtures of chiral, arylpropionitriles; novel carbohydrate phosphorus and nickel catalyst compositions; and optically pure (S)-(-)-2-(6-methoxy-2-naphthalene)propionitrile.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: May 17, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Albert L. Casalnuovo, Thaliyil V. Rajanbabu, Lawrence W. Gosser, Ronald J. McKinney, Nugent, Jr. William A.
  • Ammonolysis of nylon
    Patent number: 5302756
    Abstract: Useful monomeric products are obtained in the reaction of nylon 6,6 with ammonia. Increased yield of monomer products from nylon 6,6 is obtained from ammonolysis when a mixture with nylon 6 is employed.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: April 12, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ronald J. McKinney
  • Partially fluorinated compounds and polymers
    Patent number: 5286825
    Abstract: Partially fluorinated compounds of specified formulas that are useful as chemical intermediates and monomers are disclosed. Partially fluorinated polymers prepared from one of these compounds are also disclosed. Fluoro-2,2-dimethyldioxolanes and copolymers thereof are further disclosed.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: February 15, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Douglas R. Anton, William B. Farnham, Ming-Hong Hung, Ronald J. McKinney, Paul R. Resnick
  • Partially fluorinated compounds and polymers
    Patent number: 5233058
    Abstract: Partially fluorinated compounds of specified formulas that are useful as chemical intermediates and monomers are disclosed. Partially fluorinated polymers prepared from one of these compounds are also disclosed. Fluoro-2,2-dimethyldioxolanes and copolymers thereof are further disclosed.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: August 3, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Douglas R. Anton, William B. Farnham, Ming-Hong Hung, Ronald J. McKinney
  • Process for the preparation of aminonitriles
    Patent number: 5194657
    Abstract: A process for preparing an alpha aminonitrile comprises providing a cyclic or acyclic aliphatic ketone in a reactor, adding ammonia to the reactor, mixing the ketone and the ammonia, and adding hydrogen cyanide to the reactor to convert the hydrogen cyanide to an aminonitrile. Preferably, the reactor is purged with ammonia before the addition of hydrogen cyanide. The hydrogen cyanide may be added to the reactor at a constant rate, or it may be added to the reactor at a rate that decreases over time. A portion of the ketone may be added to the reactor during the addition of the hydrogen cyanide to the reactor.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: March 16, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ronald J. McKinney, Robert N. McGill
  • Enantioselective hydrocyanation of aromatic vinyl compounds
    Patent number: 5175335
    Abstract: The invention provides a process for enantioselective hydrocyanation of aromatic vinyl compounds which produces nonracemic mixtures of chiral, arylpropionitriles; novel carbohydrate phosphorus and nickel catalyst compositions; and optically pure (S)-(-)-2-(6-metehoxy-2-naphthalene)propionitrile.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: December 29, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Albert L. Casalnuovo, Thaliyil V. Rajanbabu, Lawrence W. Gosser, Ronald J. McKinney, William A. Nugent, Jr.
  • Hydrocyanation of conjugated 2-alkenoates
    Patent number: 5087723
    Abstract: An improved process for the nickel-catalyzed hydrocyanation of alkyl 2-alkenoates is disclosed.
    Type: Grant
    Filed: May 1, 1990
    Date of Patent: February 11, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Ronald J. McKinney
  • Promoter synergism in pentenenitrile hydrocyanation
    Patent number: 4874884
    Abstract: Process for producing adiponitrile by the zerovalent nickel catalyzed hydrocyanation of pentenenitriles is improved by using a synergistic combination of promoters selected in accordance with the reaction kinetics of the synthesis.
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: October 17, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ronald J. McKinney, Robert B. Osborne
  • Triorganotin catalyst promoters for hydrocyanation
    Patent number: 4774353
    Abstract: Zerovalent nickel catalyzed hydrocyanation of mononitriloolefins e.g., 4-pentenenitrile, to dinitriles, e.g., adiponitrile, is improved by using a triorganotin compound as a promoter for the zerovalent nickel.
    Type: Grant
    Filed: June 5, 1986
    Date of Patent: September 27, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William T. Hall, Ronald J. McKinney, William A. Nugent
  • Process for dimerizing acrylates to hexenedioates
    Patent number: 4504674
    Abstract: Alkyl acrylate esters are dimerized to dialkyl hexenedioates in the presence of a metal-treated ruthenium compound, an alcohol, optionally a phosphine, and optionally a carboxamide. The hexenedioate products are useful to prepare adipic acid.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: March 12, 1985
    Assignee: E. I. DuPont de Nemours & Co.
    Inventor: Ronald J. McKinney
  • Dimerizing acrylates to hexenedioates using ruthenium compound catalysts
    Patent number: 4485256
    Abstract: Process for dimerizing alkyl acrylate esters to dialkyl hexenedioates in the presence of an alkali metal-treated or alkaline earth metal-treated ruthenium compound. The hexenedioate products are useful to prepare adipic acid.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: November 27, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ronald J. McKinney