PROCEDE DE PREPARATION DE BASE BITUME
    3.
    发明公开
    PROCEDE DE PREPARATION DE BASE BITUME 有权
    一种用于生产沥青BASIS

    公开(公告)号:EP1917309A1

    公开(公告)日:2008-05-07

    申请号:EP06778047.8

    申请日:2006-07-28

    申请人: Total France

    摘要: The invention concerns a method for preparing a bitumen base, including the following essential steps: a) introducing a bitumen in a container equipped with mixing means, and bringing the bitumen to a temperature of 120°C to 300°C; b) introducing at least one chemical blowing additive into the container, and mixing, said chemical blowing additive being of general formula Ar1-R-Ar2 (I) wherein Ar1 and Ar2 independently of each other represent a benzene ring or a system of condensed aromatic rings of 6 to 20 carbon atoms, substituted by at least one hydroxyl group, and R represents an optionally substituted divalent radical, whereof the main chain comprises 6 to 20 carbon atoms and at least one amide and/or ester group. The invention also concerns a bitumen base obtained by implementing said method, as well as the use of such bitumen bases in road surfacing and industrial applications.