| abstract |
We describe benzotiazole, benzophenone, 3,3-diphenyl-2-cyanoacrylate, 2,2,6,6-tetramethylpiperidine, hindered phenol as well as the diazo derivatives of 4'-hydroxyacetophenone, 4-hydroxystyrene, 1,1,1-tris (4'-hydroxyphenyl) benzene and the like. When included in polymer compositions in the form of monomeric species or in the form of covalently incorporated monomers incorporated in an oligomeric or polymeric structure, or in the form of additives, such derivatives have coloring properties or confer resistance deterioration due to free radicals, oxidation or ultraviolet light. |