Patents by Inventor Darrell E. Bailey

Darrell E. Bailey 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 the production of vinyltoluene
    Patent number: 4558169
    Abstract: A process for preparing vinyltoluene comprising passing ethyltoluene through a dehydrogenation zone to form vaporous crude vinyltoluene, adding from about 50 to about 100 parts per million by weight of a polymerization inhibitor such as a nitrated phenol to the vaporous crude vinyltoluene at a temperature between about 200.degree. and about 300.degree. C., condensing the vaporous crude vinyltoluene, maintaining the pH of the aqueous phase of the condensed crude vinyltoluene at a value between about 5.5 and about 6.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: December 10, 1985
    Assignee: Cosden Technology, Inc.
    Inventors: James M. Watson, Darrell E. Bailey
  • Apparatus for the production of vinyltoluene
    Patent number: 4492675
    Abstract: An apparatus for preparing vinyltoluene comprising passing ethyltoluene through a dehydrogenation zone to form vaporous crude vinyltoluene, adding from about 50 to about 100 parts per million by weight of a polymerization inhibitor such as a nitrated phenol to the vaporous crude vinyltoluene at a temperature between about 200.degree. and about 300.degree. C., condensing the vaporous crude vinyltoluene, maintaining the pH of the aqueous phase of the condensed crude vinyltoluene at a value between about 5.5 and about 6.
    Type: Grant
    Filed: October 29, 1981
    Date of Patent: January 8, 1985
    Assignee: Cosden Technology, Inc.
    Inventors: James M. Watson, Darrell E. Bailey
  • Method and apparatus for controlling the formation of polymer accumulations during distillation of a vinylaromatic monomer
    Patent number: 4442048
    Abstract: A method for controlling the formation of polymer accumulations in a distillation column comprising accumulating liquid phase material containing a polymerization inhibitor in a seal pan; providing the seal pan with liquid-pervious weep hole means through the bottom of the pan and allowing a controlled quantity of polymerization inhibitor-containing liquid phase material to seep through the weep hole means to the underside of the seal pan; and apparatus useful for practicing the disclosed method.
    Type: Grant
    Filed: April 1, 1982
    Date of Patent: April 10, 1984
    Assignee: Cosden Technology, Inc.
    Inventors: Marshall Abernathy, Darrell E. Bailey
  • Method for controlling the formation of polymer accumulations during distillation of a vinylaromatic monomer
    Patent number: 4374000
    Abstract: A method for controlling the formation of polymer accumulations in a distillation column comprising accumulating liquid phase material containing a polymerization inhibitor in a seal pan; providing the seal pan with liquid-pervious weep hole means through the bottom of the pan and allowing a controlled quantity of polymerization inhibitor-containing liquid phase material to seep through the weep hole means to the underside of the seal pan; and apparatus useful for practicing the disclosed method.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: February 15, 1983
    Assignee: Cosden Technology, Inc.
    Inventors: Marshall W. Abernathy, Darrell E. Bailey