Patent ID: 7591860

Claim:
A secondary para-phenylene diamine chosen from compounds of formula (I) and the addition salts thereof: wherein: R is chosen from linear and branched C 2 -C 18 alkyl radicals comprising from 2 to 4 hydroxyl groups, wherein the alkyl radicals are unsubstituted or substituted with at least one entity chosen from amino, mono(C 1 -C 15 )alkylamino, di(C 1 -C 15 )alkylamino, (C 1 -C 15 )alkylcarbonyl, amido, mono(C 1 -C 15 )alkylaminocarbonyl, and di(C 1 -C 15 )alkylaminocarbonyl groups, and wherein the alkyl radicals are interrupted with at least one heteroatom chosen from oxygen and nitrogen; R 1 is chosen from hydrogen, C 1 -C 5 alkyl radicals, C 1 -C 15 alkoxy radicals, hydroxy((C 1 -C 15 )alkoxy) radicals, (C 1 -C 15 )alkoxy(C 1 -C 15 )alkyl radicals, C 1 -C 15 monohydroxyalkyl radicals, C 1 -C 15 polyhydroxyalkyl radicals, and halogen atoms; and n is an integer ranging from 1 to 4; with the proviso that the compound of formula (I) is not N-(2,3-dihydroxypropyl)-para-phenylenediamine.