Patents Assigned to Denehunt Ltd.
  • Process for the manufacture of particulate bituminized plastics material
    Patent number: 4797434
    Abstract: A process for the manufacture of particulate material, and particularly material for constructing a horse riding surface, involves mixing raw granulated plastics material, such as PVC from waste electric cable, with a bitumen emulsion and water in such a way that the granules are coated while significant agglomeration is avoided. The bitumen emulsion is preferably 40% cationic. The water may be added as a bulk at lower pressure and a small amount at high pressure which is moved around to promote mixing.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: January 10, 1989
    Assignee: Denehunt Ltd.
    Inventor: Frederick D. Lovatt-Smith