Patents Assigned to Union Carbide Chemicals & Plastics Technology Corporaton
  • Method for reducing sheeting and static charges during polymerization of ethylene polymers
    Patent number: 5391657
    Abstract: A method for reducing sheeting during polymerization of an alpha-olefin by feeding either a positive charge generating (MgO, ZnO, Al.sub.2 O.sub.3, CuO, and mixtures thereof) or a negative charge generating (V.sub.2 O.sub.5, SiO.sub.2, TiO.sub.2, Fe.sub.2 O.sub.3, and mixtures thereof) inorganic chemical additive to the reactor responsive to particular static levels in the reactor. The chemical additive is added in amounts which substantially neutralizes the electrostatic charge in the reactor.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: February 21, 1995
    Assignee: Union Carbide Chemicals & Plastics Technology Corporaton
    Inventors: Gyung-Ho Song, Aaron S. Rhee, Gerald R. Lowder