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US 2026/0308380 A1Published application
Process for producing a binder for a warm mix asphalt composition
AssigneeStora Enso OYJ
InventorsHeikki Lotti, Jesper Ekström
Life of this patent
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Abstract
The present invention is directed to a process for preparing a binder for a warm mix asphalt composition. The binder comprises lignin, a renewable and bio-based material, which replaces part of the fossil-based bitumen when the components are used in preparing a warm mix asphalt, that comprises a reduced amount of wax, fatty acid amides, surfactants and emulsifiers.
Claims14
A process for preparing a binder for an asphalt composition or an asphalt composition, comprising the steps of:
- providing an agglomerated lignin;
- disintegrating the agglomerated lignin to provide a disintegrated lignin;
- and
- mixing, at a temperature in a range of from 100° to 150° C. the disintegrated lignin with a bitumen blend to obtain a binder for an asphalt composition, or mixing, at a temperature in a range of from 100° to 150° C., the disintegrated lignin with an asphalt blend to obtain an asphalt composition,
- wherein a total amount of wax, fatty acid amides, surfactants and emulsifiers in the binder or the asphalt composition is in a range of from 0.01 to 3.0% by weight of bitumen.
2 more elements
Dependencies are inferred from the claim text.