Process for improving properties of asphalts |
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| 申请号 | US58417056 | 申请日 | 1956-05-11 | 公开(公告)号 | US2889261A | 公开(公告)日 | 1959-06-02 |
| 申请人 | PHILLIPS PETROLEUM CO; | 发明人 | PITCHFORD ARMIN C; | ||||
| 摘要 | |||||||
| 权利要求 | 8. A PROCESS FOR THE PRODUCTION OF NEGATIVE OLIENSIS ASPHALT FROM A CRUDE OIL NORMALLY NOT YIELDING SUCH A PRODUCT WHICH COMPRISES FILTERING SAID CRUDE OIL TO REMOVE WAX PARTICLES THEREFROM WHICH ARE OF THE ORDER OF MICRON MEASURED SIZES AND THEN PRODUCING THE ASPHALT FROM SAID CRUDE OIL BY SUBJECTING THE FILTERED CRUDE OIL TO A DISTILLATION. |
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| 说明书全文 | |||||||
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