| 摘要 |
Benzotriazolylphenol siloxane or silane cpds. of formula (I)-(III) are new, where R = 1-10C alkyl, phenyl and/or CH2CH2F3, at least 80% being Me; B = R or A; R' = 1-8C alkyl and/or phenyl; r = 0-50; s = 0-20; provided that at least one B is A when s = O; u = 1-6; t = 0-10; provided that t+u = 3 or more; A = a gp. of formula (IV), where Y = 1-8C alkyl, halogen and/or 1-4C alkoxy, or adjacent X+Y = 1-2C alkylenedioxy; X = O or NH; Z = H or 1-4C alkyl; n = 0-3; m = 0 or 1, provided that n = 1-3 and at least one Y is alkoxy when m = 0 or when m = 1 and X = NH; p = 1-10. Also claimed are intermediates of formula (IVa). |
