Total Raffinage Marketing

Centre National De La Recherche Scientifique

Total Marketing Services

Sylvia Harders

Laurence Lapalu

Romuald Botel

Julien Chaminand

Ludwik Leibler

Régis Vincent

Ilias Iliopoulos

Guillaume Dulac

Jean-Pierre Mesnil

Ornella Annabelle Zovi

The use in a bituminous composition of an organogelator molecule of the following general formula (I) is disclosed below: where:

Use of organogelator molecules in bituminous compositions to improve the resistance of same to chemical stress

The disclosure includes the use in a bituminous composition of an organogelator derivative which has a molar mass no higher than 2,000 g/mol and includes at least one hydrogen bonds donor D, at least one hydrogen bonds acceptor A and at least one compatibilizer agent C in the bitumen, the compatibilizer agent C including a group selected among:

Use of organogelator derivatives in bituminous compositions to improve the resistance of same to chemical stress

A process for preparing graft polymers from a polymer is based on conjugated diene units and a graft which is a thiol derivative. The process has an absence of solvent and any radical initiator. The graft polymer can be advantageously be used as additive for a bitumen/polymer composition and in particular permits thermoreversible cross-linking.

Process for preparing graft polymers without initiator and without solvent and bitumen/polymer compositions comprising said graft polymers

The present disclosure relates to the use of 2 to 6% by mass of Fischer-Tropsch waxes in a cross-linked bitumen/polymer composition for improving the cross-linked bitumen/polymer composition's resistance to aggressive chemical agents.

Use of waxes in a cross-linked bitumen/polymer composition for improving its resistance to chemical attack and cross-linked bitumen/ polymer composition comprising said waxes

The present disclosure relates to a mother solution free from oil of petroleum origin including at least one oil of vegetable and/or animal origin, from 20% to 50% by mass of polymer, with respect to the mass of the mother solution, with or without at least one cross-linking agent, the oil of vegetable and/or animal origin being acid, with an acid value measured according to the standard NF EN ISO 660 including between 50 and 300 mg KOH/g. This mother solution with a very high concentration of polymer is stable and does not gel and can therefore be diluted and used for preparing cross-linked bitumen/polymer compositions, then bituminous mixes.

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Buchholz, Germany

Sylvia Harders