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US 6,258,255 B1Granted
Method for enhancing asphalt properties
AssigneeExxon Research & Engineering Co.
InventorsMary Josephine Gale, Lyle Edwin Moran, James David Bell, Biddanda Umesh Achia
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Abstract
The invention relates to a method for making an asphalt product having an enhanced flash point and lower volatility, comprising vacuum distilling a blend of a high boiling petroleum fraction having an initial boiling point of at least 270° C. and a crude to produce a product asphalt having a flash of from 265° C. to 300° C.
Claims10
A method for enhancing the physical properties of an asphalt product, comprising:
- vacuum distilling a blend of a high boiling petroleum fraction having an initial boiling point of at least 270° C. and essentially no asphaltene content and a crude to produce a product asphalt having a flash of from 265 to 300° C. and a mass loss of less than 1 wt. %.
Dependencies are inferred from the claim text.