27-02-2014 дата публикации
Номер: US20140058021A1
A composition, which comprises a) an organic material susceptible to oxidative, thermal or light-induced degradation; and b) a compound of formula I (Formula I) (I) wherein R, R, R, R, R, R, R, R, Rand Rare independently from each other H, C-C-alkyl, C-C-cycloalkyl, phenyl, C-C-alkoxy or halogen; n is 1, 2, 3, or 4; and when n is 1 A is —C(=0)-OR′, —C(=0)-N(R′)(R′), —CN, phenyl, which is unsubstituted or substituted by one or more C-C-alkyl, C-C-alkoxy, C-C-cycloalkyl or halogen, —H or —S0-phenyl; when n is 2 A is —C(=0)-O—Z—O—C(=0)-, —C(=0)-N(R″)—Z—N(R″)—C(=0)- or piperazine-N,N′-biscarbonyl. 2. A composition according to claim 1 , where in the compound of formula I claim 1 ,n is 1, 2, 3 or 4;when n is 1,{'sub': 1', '2', '3', '1', '8', '1', '4', '2, 'A is —C(═O)—OR′, —C(═O)—N(R′)(R′), —CN, phenyl which is unsubstituted or substituted by one to three C-C-alkyl or C-C-alkoxy, —H or —SO-phenyl;'}when n is 2,{'sub': 1', '1', '2', '2, 'A is —C(═O)—O—Z—O—C(═O)—, —C(═O)—N(R″)—Z—N(R″)—C(═O)— or piperazine-N,N′-biscarbonyl;'}when n is 3,A is propane-1,2,3-tri-(oxycarbonyl), 2-methyl-propane-1,2,3-tri-(oxycarbonyl), 2-methyl-butane-1,2,1′-tri-(oxycarbonyl), 2,2-dimethyl-butane-1,1′,1″-tri-(oxycarbonyl), 2,2-dimethyl-pentane-1,1′,1″-tri-(oxycarbonyl) or 3-ethyl-3-azapentane-1,5,2′-tri-(oxycarbonyl);when n is 4,A is 2,2-dimethyl-propane-1,3,1′,1″-tetra-(oxycarbonyl);{'sub': 1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '1', '8', '1', '4', '1', '5', '6', '10, 'R, R, R, R, R, R, R, R, Rand Rare independently from each other H, C-C-alkyl, phenyl or C-C-alkoxy with the proviso that at least Ror Ris H and at least Ror Ris H;'}{'sub': 1', '1', '22', '2', '18', '5', '7', '1', '4', '5', '7', '1', '4', '6', '10', '1', '4', '4', '12', '1', '6', '1', '6, 'R′is H, C-C-alkyl, C-C-alkenyl, C-C-cycloalkyl which is unsubstituted or substituted by one C-C-alkyl, C-C-cycloalkyl-C-C-alkyl, C-C-aryl-C-C-alkyl, C-C-alkyl which is interrupted by one or more oxygen atoms, 2,2,6,6- ...
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