Patent ID: 7148274

Claim:
A composition stabilized against thermal, oxidative or light-induced degradation which comprises, (a) an organic material subject to thermal, oxidative or light-induced degradation, and (b) an effective stabilizing amount of a compound of formula wherein T is a direct bond, 1,4-phenylene or said phenylene substituted by one or two alkyl of 1 to 12 carbon atoms, E 1 is hydrogen, straight or branched alkyl of 1 to 24 carbon atoms, phenylalkyl of 7 to 15 carbon atoms, phenyl, or said phenyl or said phenylalkyl substituted on the phenyl ring by 1 to 4 alkyl of 1 to 4 carbon atoms, and E 2 is straight or branched alkyl chain of 1 to 24 carbon atoms, straight or branched chain alkenyl of 2 to 18 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenylalkyl of 7 to 15 carbon atoms, phenyl, or said phenyl or said phenylalkyl substituted on the phenyl ring by 1 to 3 alkyl of 1 to 4 carbon atoms; or E 2 is alkyl of 1 to 24 carbon atoms or alkenyl of 2 to 18 carbon atoms substituted by one or more —OH, —OCOE 3 , —NH 2 , —NHCOE 3 or —COOE 3 , or mixtures thereof; or said alkyl or said alkenyl interrupted by one or more —O— which can be unsubstituted or substituted by one or more —OH groups; where E 3 is hydrogen or alkyl of 1 to 24 carbon atoms, and where said alkyl is interrupted by one or more —O— and which can be substituted by one or more —OH or —OR 21 groups where R 21 is alkyl of 1 to 12 carbon atoms.