Quinonamines formation: is the oxidation of low reactivity bases with hydrogen peroxide
under alkaline conditions with the formation of monamines from para and ortho-aminophenols, and
diamines from p-phenylenediamine and o-phenylenediamine. The PPD is especially oxidized in a
reactive intermediate, the quinoamine that, in the presence of the reaction modifier, will generate a
colorful polymer [33].