Patent ID: 7132534

Claim:
A compound chosen from para-phenylenediamine derivatives substituted with a pyrrolidyl group, wherein said pyrrolidyl-substituted para-phenylenediamine derivatives are chosen from derivatives corresponding to formula (I), and the addition salts thereof, wherein: n is an integer from 0 to 4, provided that when n is greater than or equal to 2, then the radicals R 1 may be identical or different, R 1 is chosen from halogen atoms; saturated and unsaturated, aliphatic and alicyclic C 1 –C 6 hydrocarbon-based chains, wherein at least one carbon atom of the hydrocarbon-based chain may be replaced with at least one entity chosen from oxygen, nitrogen, silicon and sulphur atoms and from SO and SO 2 groups, provided that the radical R 1 does not comprise a peroxide bond or a diazo, nitro or nitroso radical; and further wherein the hydrocarbon-based chain may be substituted with at least one group chosen from halogen atoms and hydroxyl, amino, mono-(C 1 –C 4 )alkylamino, di(C 1 –C 4 )alkylamino and tri(C 1 –C 4 )alkylammonium radicals; Y is chosen from a covalent bond and a linear or branched C 1 –C 14 alkylene chain, wherein at least one carbon atom of the chain may be replaced with at least one atom chosen from oxygen, nitrogen, silicon and sulphur atoms or with a group chosen from SO and SO 2 groups; wherein the chain may be substituted with at least one radical chosen from hydroxyl, C 1 –C 6 alkoxy, amino, C 1 –C 6 alkylamino and C 1 –C 6 dialkylamino radicals; and further wherein the chain may bear at least one ketone functional group, and R 2 is chosen from 3- to 7-membered saturated and unsaturated carbocycles and heterocycles, which may be substituted with at least one radical chosen from C 1 –C 6 alkyl and C 1 –C 6 hydroxyalkyl radicals.