BITUMEN COMPOSITIONS AND A PROCESS FOR THEIR PREPARATION

摘要

The invention provides a process for preparing a bitumen composition comprising blowing a mixture with an oxygen-containing gas which mixture comprises a bitumen having a penetration of at least 300 dmm (as measured by ASTM D 5 at 25.degree.C), a thermoplastic rubber which is present in an amount of less than 10 %w and a bitumen blowing catalyst which is present in an amount in the range of from 1 to 3 %w, both based on total mixture; bitumen compositions obtainable by such process; and the use of such bitumen compositions in a bitumen for industrial applications.