Bitumen compositions and a process for their preparation

Details Bitumen compositions and a process for their preparation Bitumen compositions and a process for their preparation

1996-11-21

1998-11-03

Cooney, Jr., John M.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521101, 521146, 521148, 521150, 524 62, 524 68, C08J 910

Patent

active

058309250

ABSTRACT:
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 less than 300 and a thermoplastic rubber which is present in an amount of less than 5% w, based on total mixture; bitumen compositions obtainable by such process; and the use of such bitumen compositions in asphalt mixtures for road applications.

REFERENCES:
patent: 2807596 (1957-09-01), Flickinger
patent: 3853798 (1974-12-01), Oelsner et al.
patent: 4010123 (1977-03-01), Blunt et al.
patent: 4399186 (1983-08-01), Lauderback
patent: 4511679 (1985-04-01), Ariyoshi et al.
patent: 4609695 (1986-09-01), Cogliano
patent: 5342866 (1994-08-01), Trumbore et al.
patent: 5405882 (1995-04-01), Balnpied
International Search Report May 16, 1997.

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