Patents by Inventor Morris Rapoport

Morris Rapoport 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).

  • Hydrocyanation of butadiene
    Patent number: 4714773
    Abstract: Hydrocyanation of butadiene using a mixed ligand zerovalent nickel catalyst wherein the mixture of phosphite ligands there is 10 to 65 mol percent phenyl, and a complemental amount of meta- and para-tolyl.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: December 22, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Morris Rapoport
  • Continuous hydrocyanation process using zinc halide promoter
    Patent number: 4705881
    Abstract: Process for production of dinitriles using zero-valent nickel catalysts having low ligand ratio, and low amounts of zinc halide as the promoter.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Morris Rapoport
  • Recovery of zerovalent nickel complexes
    Patent number: 4539302
    Abstract: Process for recovery of zerovalent nickel organophosphorus containing catalyst from a hydrocyanation product stream by controlling the level of unreacted mononitriles in the stream causing the thus treated stream to form two phases and recovering catalyst from the heavier phase.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: September 3, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William R. Leyendecker, Morris Rapoport
  • Hydrocyanation of olefins
    Patent number: 4371474
    Abstract: An improved process for the production of dinitriles, e.g., adiponitrile, by the hydrocyanation of 3- and/or 4-pentenenitriles using a zero-valent nickel complexed with a phosphorus containing ligand as a catalyst with a molar ratio of total ligand to nickel of about 5.0-7.8.
    Type: Grant
    Filed: January 13, 1982
    Date of Patent: February 1, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Morris Rapoport
  • Treatment of olefin hydrocyanation products
    Patent number: 4339395
    Abstract: Use of ammonia to control interfacial rag formation when olefin hydrocyanation products are contacted with a hydrocarbon.
    Type: Grant
    Filed: April 15, 1981
    Date of Patent: July 13, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Willie J. Barnette, Farland E. Henry, Morris Rapoport
  • Hydrocyanation of olefins
    Patent number: 4330483
    Abstract: An improved process for the production of dinitriles, e.g., adiponitrile, by the hydrocyanation of 3 and/or 4-pentenenitriles by control of temperature and the amount of hydrogen cyanide relative to the other compounds participating in the reaction.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: May 18, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Morris Rapoport
  • Hydrocyanation of olefins
    Patent number: 4328172
    Abstract: An improved process for the production of dinitriles, e.g., adiponitrile, by the hydrocyanation of 3 and/or 4-pentenenitriles by staging the introduction of hydrogen cyanide to the reaction.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: May 4, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Morris Rapoport
  • Process for the oxidation of cyclohexane
    Patent number: 3957876
    Abstract: Preparation of cyclohexyl hydroperoxide substantially free of other peroxides by oxidation of cyclohexane containing a cyclohexane soluble cobalt salt in a zoned oxidation process in which an oxygen containing gas is fed to each zone in the oxidation section in an amount in excess of that which will react under the conditions of that zone.
    Type: Grant
    Filed: May 30, 1973
    Date of Patent: May 18, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Morris Rapoport, Jesse Oris White