Road asphalt composition

Details Road asphalt composition Road asphalt composition

1988-07-27

1990-03-13

Lieberman, Paul

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

1062843, 1062731, 208 22, 208 39, 208 44, C08L 9500

Patent

active

049080644

ABSTRACT:
Asphalt used for road paving containing catalytic cracking catalyst particles which have been burned to remove hydrocarbons deposited thereon during a petroleum catalytic cracking process. The catalyst particles may be present in the asphalt in amounts of from 0.1% to 5.0% by weight of the asphalt, but more preferably from 0.2% to 2.0% by weight of the asphalt. The particles, which are comprised of crystalline and amorphous silica and alumina and silica-alumina combinations, function to prevent oxidative condensation of the asphalt, thus preventing hardening of the asphalt.

REFERENCES:
patent: 3261269 (1966-07-01), McGovern
patent: 4006075 (1977-02-01), Lukenbach
patent: 4247335 (1981-01-01), Beckham

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