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US 11,377,560 B2Granted
Modified asphalts and methods for producing the same
AssigneeExxonMobil Technology and Engineering Company
InventorsJonathan D. Webb, Nadjib Boussad, Katherine L. Sokol, Patrick Brant
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Abstract
Modified asphalts and methods for producing the same are disclosed. The modified asphalts can include asphalt having a T5 boiling point of 400° C. or more, an olefin compound, and an acid promoter. The modified asphalt can include at least a portion of the olefin compound chemically grafted to at least a portion of the asphalt. The method can include exposing the asphalt, olefin compound, and acid promoter to a temperature of about 160° C. or more.
Claims23
A method for modifying an asphalt, comprising:
- exposing an asphalt having a T5 boiling point of 400° C. or more to:
- 1) 0.2 wt. % to 5 wt. % of an olefin compound having a molecular weight of 0.2 kDa to 110 kDa;
- and 2) 0.1 wt. % to 2 wt. % of an acid promoter to form a modified asphalt.
An asphalt composition comprising:
- an asphalt having an initial or T5 boiling point of 400° C. or more;
- 0.2 wt. % to 5 wt. % of an olefin compound having a molecular weight between 50 kDa and 110 kDa;
- and
- 0.1 wt. % to 2 wt. % of an acid promoter selected from AlCl3, H2SO4, polyphosphoric acid, BCl3, ZnCl2, SnCl4, TiCl4, zeolites, or a combination thereof,
- wherein the asphalt composition is formed at a temperature of 160° C. to 230° C., the asphalt composition having a high temperature performance grade of 58° C. or more and a low temperature performance grade of −34° C. to −16° C.
2 more elements
Dependencies are inferred from the claim text.