Use of catalytically oxidised asphalt precursors as rutting reducing additives in paving asphalt cements |
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| 申请号 | EP91304916.9 | 申请日 | 1991-05-30 | 公开(公告)号 | EP0459811A3 | 公开(公告)日 | 1992-12-23 |
| 申请人 | PETRO CANADA; | 发明人 | Kamel, Nabil I; Miller, Laverne J.; | ||||
| 摘要 | A process to prepare a paving asphalt cement which comprises (a) catalytically oxidizing an asphalt precursor to form a catalytically oxidized asphalt cement; and, (b) mixing the catalytically oxidized asphalt cement with an asphalt precursor to obtain the desired grade of paving asphalt cement. |
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| 说明书全文 | |||||||
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