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

摘要

The use in a bituminous composition of an organogelator molecule of the following general formula (I) is disclosed below:;
where:
A is a hydrocarbon group which can be straight or branched, saturated or unsaturated, acyclic, cyclic or polycyclic, having 3 to 92 carbon atoms, resulting from the polymerization of lateral chains of at least one unsaturated fatty acid,X is an NH group or an oxygen atom O,R1 is a group chosen from: a straight or branched hydrocarbon group with 2 to 40 carbon atoms, optionally including one or more heteroatoms and optionally including one or more unsaturations, or an aromatic group, substituted or otherwise,R2 is a group selected among: a hydrogen atom, a straight or branched hydrocarbon group with 1 to 40 carbon atoms, including one or more heteroatoms and optionally including one or more unsaturations, or an aromatic group, substituted or otherwise;m and n are, separately from one another, an integer ranging from 1 to 4,p is an integer ranging from 0 to 4,q is an integer ranging from 1 to 4 or a combination of the values,Y is a group including a hydrogen bond donor such as the NH grouping and a hydrogen bond acceptor such as the C═O grouping, to improve the resistance thereof to aggressive chemical agents, in particular to hydrocarbons such as gasolines, diesels and/or kerosenes.

主权项

1. A method for improving resistance of a bituminous composition to petroleum hydrocarbons, the method comprising adding at least one organogelling molecule into a bituminous composition and contacting the bituminous composition containing the organogelling molecule with petroleum hydrocarbons, the at least one organogelling molecule being represented by general formula (I):where:
A represents an acyclic, cyclic or polycyclic, saturated or unsaturated, linear or branched hydrocarbon group, with 3 to 92 carbon atoms, resulting from the polymerization of the side chains of at least one unsaturated fatty acid; X represents an NH group or an oxygen atom O; R1 is selected from the group consisting of: a linear or branched hydrocarbon group with 2 to 40 carbon atoms, a linear or branched hydrocarbon group with 2 to 40 carbon atoms comprising one or more heteroatoms, a linear or branched hydrocarbon group with 2 to 40 carbon atoms comprising one or more unsaturations, and a substituted or unsubstituted aromatic group; R2 is selected from the group consisting of: a hydrogen atom, a linear or branched hydrocarbon group with 1 to 40 carbon atoms comprising one or more heteroatoms, and a linear or branched hydrocarbon group with 1 to 40 carbon atoms comprising one or more heteroatoms and one or more unsaturations, and a substituted or unsubstituted aromatic group; m and n represent independently of each other an integer varying from 1 to 4; p represents an integer varying from 0 to 4; q represents an integer varying from 1 to 4 or a combination of these values; and Y represents a group comprising a hydrogen bond donor and a hydrogen bond acceptor.