Process for preparing bitumen compositions

Details Process for preparing bitumen compositions Process for preparing bitumen compositions

1997-05-16

1999-01-26

Szekely, Peter A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C08L 9500

Patent

active

058639713

ABSTRACT:
The present invention provides a process for preparing a bitumen composition which comprises mixing at an elevated temperature an oxidised bitumen having a penetration index of at least 0 with a thermoplastic rubber which is present in an amount of less than 5% wt., based on total bitumen composition; bitumen compositions obtainable by such process; and the use of such bitumen compositions in asphalt mixtures for road applications.

REFERENCES:
patent: 4454269 (1984-06-01), Goodrich
patent: 4464427 (1984-08-01), Barlow
patent: 4745155 (1988-05-01), Grossi
patent: 5151456 (1992-09-01), Elias et al.
patent: 5182319 (1993-01-01), Mitchell
patent: 5601642 (1997-02-01), Drieskens et al.

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