25-04-1990 дата публикации
Номер: CA2001241A1
Принадлежит:
Ciba Geigy AG
A-17278/+ Phenol group-containing compounds as anti-oxidants in organic materials Abstract Compositions containing a) an organic material subject to oxidative, thermal or actinic degradation and b) compounds of general formula I (I), wherein, for example, R1 is alkyl having from 1 to 18 carbon atoms, cycloalkyl having from 5 to 12 carbon atoms, phenyl or aralkyl having from 7 to 9 carbon atoms, R2 is -H, alkyl having from 1 to 18 carbon atoms, cycloalkyl having from 5 to 12 carbon atoms, phenyl or aralkyl having from 7 to 9 carbon atoms, and R3 is -H or CH3, and n is a number from 1 to 4 or 6, and, when n is 1, A is -OR4 or , and, for example, R4 is -H, alkyl having from 1 to 45 carbon atoms, cycloalkyl having from 5 to 12 carbon atoms or alkenyl having from 2 to 18 carbon atoms, and each of R5 and R6, independently of the other, is -H, alkyl having from 1 to 20 carbon atoms, phenyl or cycloalkyl having from 5 to 12 carbon atoms, or, when n is 2, for example A is -O-CxH2x-O-, -O-(CH2CH2O)aCH2CH2O-, -O-CH2-CH2-B-CH2CH2O-, , , , -O-CH2CH=CHCH2-O-, -O-CH2C=CCH2-O-, or wherein a is a number from 1 to 30, x is a number from 2 to 20, B is, for example, -S-, and R7 and R8 are as defined above and b1 is a number from 2 to 10, or, when n is 3, A is , or, when n is 4, A is , or or, when n is 6, A is
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