Photostable, silylated benzotriazole uv absorbers and compositions stabilized therewith

摘要

Photostable, silylated benzotriazole compounds of formula (I) or (II)where at least one of E1, E2, E5, E8, E9, G2 and G7 is a silylated group; and G2 and/or G7 is an electron withdrawing moiety or E1 is alpha-cumyl, are both photostable and particularly compatible in high performance coatings such as organopolysiloxanes.