Process for producing oxidation bitumen by reaction with air in the presence of free radical-formers

摘要

For producing oxidation bitumen, a finely divided air stream is blown through a residue from crude oil processing at temperatures above 100 DEG C in the presence of substances which decompose at these temperatures into free radicals. The oxidation bitumina produced in this way show a lower penetration and a higher softening point than the starting material.