Patents Examined by Carman K. Seccuro
  • Films of blends of linear ethylene polymers and aromatic polymers
    Patent number: 4716201
    Abstract: Linear low density copolymers (LLDPE) are blended with up to about 10 weight percent of an aromatic polymer, e.g., polystyrene or poly(para-methylstyrene), to give films having improved MD tear strength or equivalent MD tear strength and higher stiffness compared to the LLDPE alone. Also, extruder torque is lower and bubble stability is greater in blown film extrusion with the blends as well as in blends in which medium or high density polyethylene is used instead of the LLDPE.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: December 29, 1987
    Assignee: Mobil Oil Corporation
    Inventors: Peter J. Canterino, David V. Dobreski, Richard G. Shaw