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US 4,070,338 AGranted
Phenolic imidazolones and polymers stabilized therewith
AssigneeCiba-Geigy Corporation
InventorsSiegfried Rosenberger, Andreas Schmidt
Life of this patent
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Abstract
Compounds of the formula I ##STR1## wherein A is 1,2-cycloalkylene, 1,2-cycloalkenylene or 1,2-arylene, R.sub.1 and R.sub.2 are alkyl, R.sub.3, R.sub.4 and R.sub.5 are hydrogen or alkyl and n is 0, 1 or 2, as stabilizers for organic material.
Claims9
Compounds of the formula I ##STR5## wherein A is 1,2-cycloalkylene, 1,2-cycloalkenylene or 1,2-arylene, R.sub.1 and R.sub.2 are alkyl, R.sub.3, R.sub.4 and R.sub.5 are hydrogen or alkyl and n is 0, 1 or 2.
Dependencies are inferred from the claim text.