| abstract |
Compounds of the formula I <IMAGE> I in which is independently hydrogen, alkyl, alkoxy, halogen, trifluoromethyl or nitro, R1 is hydrogen, alkyl, phenyl, substituted phenyl or furyl, R2 is hydrogen or alkyl, R3 and R4 are independently hydrogen, alkyl, allyl, aralkyl, alkoxy, halogen, phenyl or cyclohexyl, and R5 is hydrogen, alkyl or alkenyl, are good corrosion inhibitors for organic materials, especially for coating materials. They can at the same time also act as antioxidants and light stabilizers. |