abstract |
A compound of the formula (I), wherein one or two radicals of the radicals R 1 are independently of one another C 1 -C 20 alkyloxy or C 3 -C 12 cycloalkyloxy and the remaining radicals R 1 are independently of one another hydrogen, C 1 -C 20 alkyl or C 3 -C 12 cycloalkyl; the radicals R 0 and R 2 are independently of one another hydrogen, C 1 -C 20 alkyl, C 3 -C 12 cycloalkyl or a group of the formula (II-a) with R 3 being hydrogen, C 1 -C 20 alkyl, C 3 -C 12 cycloalkyl, C 1 -C 20 alkyloxy or C 3 -C 12 cycloalkyloxy; Y is C 2 -C 12 alkylene; m is 0 or 1; n is 1, 2 or 3; when n is 1, X is hydrogen, C 1 -C 20 alkyl, C 3 -C 12 cycloalkyl or a group of the formula (II-a); when n is 2, X is C 2 -C 12 alkylene; when n is 3, X is a group N(Z—) 3 with Z being C 2 -C 12 alkyl |