Patent ID: 8202922

Claim:
A process for preparing cross-linked bitumen/copolymer compositions, the process comprising, reducing emissions of hydrogen sulphide during preparation of cross-linked bitumen/copolymer compositions by bringing into contact at least one bitumen or mixture of bitumens with at least one copolymer, wherein said copolymer is based on conjugated diene units and aromatic monovinyl hydrocarbon units, and at least one cross-linking agent, while operating at temperatures comprises between 100° C. and 230° C. and under stirring, for a duration of at least ten minutes, said cross-linking agent being represented by the general formula HS—R—SH where R is selected from the group consisting of: a linear and saturated, exclusively hydrocarbon group with 8 to 40 carbon atoms and, a linear and saturated hydrocarbon group with 2 to 40 carbon atoms comprising at least one heteroatom and not comprising a carbonyl C—O function and/or carboxylate O—C—O function.