| abstract |
The invention concerns new carboxylic acid amides of the formula WHEREIN M denotes a divalent bridge member of the series -S-, S-A-S- and -S-CH2-CH2-(O-CH2-CH2)p-S-, A denotes an alkylene residue containing one to 18 carbon atoms, p denotes an integer from one to three, R1 denotes an alkyl group and R2 denotes alkyl or hydrogen. These compounds are valuable antioxidants for polymers which are damaged by oxidative attacks. |