Bitumen composition
AssigneeNederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
InventorsTheodoor Maximiliaan Slaghek, Dave Van Vliet, Cecile Giezen, Ingrid Karin Haaksman
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Abstract
The invention is directed to a bitumen composition, to a paving, to a roofing, to a method for preparing a bitumen composition, to a method for increasing the stiffness of a bitumen composition, to a method of adjusting the physical properties of a bitumen composition, and to the use of a bitumen composition. The bitumen composition of the invention comprises a lignin compound or derivative thereof, wherein 10 wt. % or more by weight of said lignin compound or derivative thereof is molecularly dissolved in said bitumen composition.
Claims18
Bitumen composition comprising a lignin compound or derivative thereof, wherein 25 wt. % or more by weight of said lignin compound or derivative thereof is molecularly dissolved in said bitumen composition,
- wherein the molecularly dissolved lignin compound or derivative thereof has an average particle size of 100 μm or less,
- wherein said lignin compound or derivative thereof is a chemically modified lignin, and
- wherein said chemically modified lignin is chemically modified with one or more groups selected from anhydrides, epoxy carrying reactants, and halide containing compounds.
Method of preparing a bitumen composition comprising molecularly dissolving 25 wt. % or more by weight of a lignin compound or derivative thereof into a bitumen composition, wherein the molecularly dissolved lignin compound or derivative thereof has an average particle size of 100 μm or less, wherein said lignin compound or derivative thereof is a chemically modified lignin, and wherein said chemically modified lignin is chemically modified with one or more groups selected from anhydrides, epoxy carrying reactants, and halide containing compounds.
Dependencies are inferred from the claim text.