Patents Assigned to Elf Antar France Tour Elf-2 Place de la Coupole
  • Bitumen/polymer compositions with improved stability and their application in carrying out surfacing operations
    Patent number: 6020404
    Abstract: Bitumen/polymer compositions are provided containing a bitumen or a mixture of bitumens and, reckoned by weight of bitumen, 0.3% to 20% of at least one primary polymer selected among certain elastomers and plastomers and 0.01% to 12% of at least one olefinic polymer bearing epoxy or COOH groupings. The compositions are useful, directly or after dilution, to form bitumen/polymer binders for carrying out road surfacing, for coated materials or waterproof coatings.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: February 1, 2000
    Assignee: Elf Antar France Tour Elf-2 Place de la Coupole
    Inventors: Jean-Pascal Planche, Patrick Turello, Claude Lacour