| abstract |
Disclosed is the use of silane and siloxane bis(biphenyl)triazine derivatives of formula (1), wherein n is a number from 1 to 4; if n = 1, X is * -L-Sil; or a radical of formula (11'), L is a linker selected from a radical of formula (2); R1, R2, R3 independently from each other are C1-C 22 alkyl; C 6 -C 20 aryl; C 1 -C 22 alkoxy; or O-C 6 -C 20 aryl; R4, R5, R6 and R7 independently from each other are hydrogen; C 1 -C 22 alkyl; C 6 -C 20 aryl; C 1 - C 22 alkoxy; or O-C 6 -C 20 aryl; b is a number from 0 to 30; c is a number from 0 to 6; and d is a number from 0 to 1; p is a number from 1 to 250; q is a number from 0 to 250; and Sil, Sil 1 and Sil 2 independently from each other are a a silane-, oligosiloxane or polysiloxane moiety; if n = 2, X is a bivalent radical of formula (1a); or (1b); x is a number from 2 to 250; y is a number from 0 to 250; and z is a number from 1 to 50; if n = 3, X is a trivalent radical containing a silane-, oligosiloxane or polysiloxane moiety; If n = 4, X is a tetravalent radical of formula (1c); and A is a radical of formula (111') as UV absorbers. |