| abstract |
1464403 Phenolic antioxidants CIBAGEIGY AG 1 Nov 1974 [1 Nov 1973] 47332/74 Heading C3P [Also in Division C2] Polymers may be stabilized with a compound of the formula in which R 1 denotes a straight-chain or branched alkyl group, a cycloalkyl group or an aralkyl group, R 2 denotes H, a straight-chain or branched alkyl group, a cycloalkyl group or an aralkyl group, R 3 and R 3 <SP>1</SP> independently of one another denote H or a lower alkyl group having 1 to 4 carbon atoms, or R 1 conjointly with R 3 <SP>1</SP> or R 2 conjointly with R 3 , denote tetramethylene, R 4 and R 5 independently of one another denote H, phenyl or alkyl or conjointly denote alkylene and R 6 denotes alkyl, phenyl or alkylphenyl, or, conjointly with R 4 or R 5 denotes alkylene or, conjointly with R 4 and R 5 , denotes alkanetriyl. |