Fluxant agents for hydrocarbon binders

Method for preparing a bituminous product based on solid mineral particles in contact with a hydrocarbon binder, comprising a step of contacting a composition with solid mineral particles, said composition including a hydrocarbon binder, wherein at least one compound with the formula (I)

• R1—X—R—Y—R2 (I)
• where:
• R1 and R2, which can be identical or different, are hydrocarbon chains, linear or branched, at C2-C11;
• each of —X— and —Y—, which can be identical or different, is an —O—(C═O)— group;
• —(C═O)—O—;
• —NR′—(C═O)—, where R′ represents a hydrocarbon atom or an alkyl radical at C1-C4, or —(C═O)—NR′—, where R′ represents a hydrocarbon atom or an alkyl radical at C1-C4,
• the —R— group is a divalent hydrocarbon chain, at C1-C10, linear or branched, and possibly interrupted by one or more oxygen atom(s)
• is added as a fluxant agent to said composition before, at the same time as or after the step of contacting the composition with the solid mineral particles, said step being achieved before complete evaporation of the compound of formula (I) outside the composition.