| abstract |
Invention Patent: <B> "OXOPIPERAZINIL DERIVATIVES AND LIGHT STABILIZED COMPOSITIONS" <D>. Compounds of formula (I) in which: p is zero or 1; q and r, independently of each other, are an integer from 1 to 6; and s is a number ranging from 1 to 8; X is-O- or, when p is 1, X is also a group; R ~ w ~, R ~ x ~, R ~ y ~ and R ~ z ~ are, independently of one another, C ~ 1 ~ -C ~ 18 ~ alkyl, C ~ 5 ~ -C ~ 12 ~ cycloalkyl or C ~ 1 ~ -C ~ 5 ~ hydroxyalkyl, especially methyl; R ~ 1 ~ is hydrogen; C ~ 1 ~ -C ~ 18 ~ alkyl; oxyl; OH; CH ~ 2 ~ CN; C ~ 1 ~ -C ~ 18 ~ alkoxy; C ~ 5 ~ -C ~ 12 ~ cycloalkoxy; C ~ 3 ~ -C ~ 8 ~ alkenyl; C ~ 3 ~ -C ~ 8 ~ alkynyl; C ~ 7 ~ -C ~ 12 ~ phenylalkyl; C ~ 7 ~ -C ~ 15 ~ phenylalkyl, which is substituted on the phenyl ring with 1,2 or 3 radicals selected from C ~ 1 ~ -C ~ 4 ~ alkyl and C ~ 1 ~ -C ~ 4 ~ alkoxy; C ~ 7 ~ -C ~ 15 ~ phenyl alkoxy; C ~ 7 ~ -C ~ 15 ~ phenyl alkoxy, which is substituted on the phenyl ring with 1,2 or 3 radicals selected from C ~ 1 ~ -C ~ 4 ~ alkyl and C ~ 1 ~ -C ~ 4 ~ alkoxy ; or R ~ 1 ~ is C ~ 1 ~ -C ~ 8 ~ alkanoyl; C ~ 3 ~ -C ~ 5 ~ alkyleneyl; C ~ 1 ~ -C ~ 18 ~ alkanoyloxy; glycidyl; or a CH-2 ~ CH (OH) -G group, in which G is hydrogen, methyl or phenyl; R ~ 2 ~ is hydrogen, C ~ 1 ~ -C ~ 8 ~ alkyl, C ~ 5 ~ -C ~ 12 ~ cycloalkyl or C ~ 1 ~ -C ~ 4 ~ hydroxyalkyl; R ~ 3 ~, R ~ 4 ~, R ~ 5 ~, independently of one another, are hydrogen, C ~ 1 ~ -C ~ 8 ~ alkyl or C ~ 5 ~ -C ~ 12 ~ cycloalkyl; and W and other wastes as described in claim 1, are effective stabilizers for organic materials, for example, thermoplastic organic polymers, coating compositions or photographic materials. |