Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue
Patent
1992-04-15
1994-02-08
Brunsman, David
Compositions: coating or plastic
Coating or plastic compositions
Bituminous material or tarry residue
1062841, 1062842, C09D19500, C08L 9500
Patent
active
052845095
ABSTRACT:
A process for preparing a paving asphalt cement comprising two steps. In the first step, a high quality paving asphalt precursor, a low quality paving asphalt precursor, a non-paving asphalt precursor or a mixture thereof are catalytically oxidized to form a paving asphalt cement. In the second step, the catalytically oxidized paving asphalt cement is mixed with one or more of a high quality paving asphalt precursor, a low quality paving asphalt precursor, a non-paving asphalt precursor or a mixture thereof.
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Kamel Nabil I.
Miller Laverne J.
Brunsman David
Petro-Canada Inc.
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