Patent ID: 8669378

Claim:
A compound of formula (I′) tautomers thereof, stereoisomers thereof and mixtures thereof, in which R1, R2 and R3 are each independently selected from a hydrogen, and a C1 to C20 alkyl chain, R′ represents -A-C′, A denoting a chemical bond or a linear or branched divalent radical, containing 1 to 20 carbon atoms, which may optionally comprise one or more heteroatoms selected from O, N, S and P, and which may comprise one or more unsaturations, and which may be optionally substituted with one or more identical or different substituents selected from a halogen, a hydroxyl group and an oxo group, and C′ being a monocyclic or polycyclic group, which may optionally comprise one or more heteroatoms selected from O, N, S and P, optionally containing one or more unsaturations and being optionally substituted with one or more identical or different substituents chosen from a halogen, a linear or branched alkyl chain, a linear or branched alkenyl chain, a hydroxyl, oxo, amino, alkylamino, imino, alkylimino, enamine, acyl, alkyloxy, alkenyloxy, alkynyloxy, aryl or heteroaryl group and a group of poly(alkyloxy) type of formula —O—([C1 to C4 alkyl chain]-O) n —(C1 to C4 alkyl chain), n being 1 to 10.