Patents by Inventor Peter C. Imm

Peter C. Imm 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).

  • Process for preparing dinitrotoluene
    Patent number: 5057632
    Abstract: Described herein is a continuous process for preparing dinitrotoluene by reacting toluene with dilute nitric acid to produce mononitrotoluene, then reacting the mononitrotoluene with concentrated nitric acid to produce dinitrotoluene.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: October 15, 1991
    Assignee: Olin Corporation
    Inventors: Peter C. Imm, Allan B. Quakenbush
  • Process for purifying aromatic nitration products
    Patent number: 5012019
    Abstract: The present invention relates to a process for purifying an aromatic nitration product mixture comprising a nitrated aromatic compound, water, and nitric or sulfuric acid which comprises without regard to sequence: (a) removing at least a portion of said water from said product mixture by contacting and reacting said water in said mixture with magnesium nitrate trihydrate to form magnesium nitrate pentahydrate or magnesium nitrate hexahydrate and removing said magnesium nitrate pentahydrate or magnesium nitrate hexahydrate from said nitrated aromatic compound in said product mixture, and (b) removing at least a portion of said acid from said product mixture by contacting and reacting said acid with an ionic or non-ionic absorbent to form a reacted absorbent and removing said reacted absorbent from said nitrated aromatic compound in said product mixture.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: April 30, 1991
    Assignee: Olin Corporation
    Inventors: Robert W. Mason, Peter C. Imm, Paul J. Craney, Thomas W. Offill, Robert T. Brooker
  • Process for the production of dinitrotoluene using an inorganic salt as a phase separation agent
    Patent number: 4918250
    Abstract: This invention relates to a process for nitrating toluene to dinitrotoluene and phase separation of the product using an inorganic salt as a phase separation agent.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: April 17, 1990
    Assignee: Olin Corporation
    Inventors: Robert W. Mason, Peter C. Imm, Kent J. Bordelon