| abstract |
Tris-aryl-s-triazines which contain one to three resorcinol-derived residues, at least one of which is substituted in position 5 by an alkyl group, a phenylalkyl group, a halogen, a thio group or a sulfonyl group, have UV spectra shifted to red region of the adjacent ultraviolet region and provide stabilization of polymeric materials against the harmful effects of actinic radiation. |