Processes for producing high grade asphaltic materials from low

Details Processes for producing high grade asphaltic materials from low Processes for producing high grade asphaltic materials from low

1981-11-12

1984-06-26

Gantz, Delbert E.

Mineral oils: processes and products

Oxidation of mineral oils

To form asphalts, tars or pitches

208 6, 208 22, C10C 304

Patent

active

044565232

ABSTRACT:
Disclosed is a process for producing high grade asphaltic materials from low grade bituminous materials and the improved products resulting therefrom. More particularly, there is disclosed a process utilizing a particular type of oxidation catalyst in preparing novel high quality paving grade asphalt cements and novel roofing grade asphalts from poor and marginal quality bituminous materials. Also, the process can be used to prepare novel superior quality asphaltic materials from good quality bituminous flux feedstocks. This process consists of catalytically oxidizing asphalt fluxes, for example, in a single or multi-stage oxidation, using the particular type of catalyst disclosed hereinafter in each stage to chemically modify the flux so that the resultant asphaltic material meets physical requirements necessary for a finished product possessing good temperature susceptibility characteristics.

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patent: 3607334 (1971-09-01), Fauber
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