Patents Assigned to Royalite Plastics Limited
  • Photosensitive elastomeric composition for flexographic printing plates having improved softness
    Patent number: 4686172
    Abstract: A photosensitive elastomeric composition which comprises a high molecular weight elastomeric diene polymer having a number average molecular weight (Mn) of about 30,000 to 125,000, and a Mooney viscosity (ML-4 at 100.degree. C.) of 35 or higher; a low molecular weight diene polymer having a number average molecular weight of about 1,000 to 25,000; a photopolymerizable, ethylenically unsaturated cross-linking agent; and an addition polymerization initiator activatable by actinic radiation.
    Type: Grant
    Filed: July 18, 1985
    Date of Patent: August 11, 1987
    Assignees: Uniroyal Plastics Co., Inc., Royalite Plastics Limited
    Inventors: John R. Worns, Milton Farber, David T. Hughes