1-Diorganocarbamoyl-polyalkylpiperidines

Abstract

Compounds containing a group of the formula I ##STR1## in which R is H or C.sub.1 -C.sub.4 -alkyl, R.sup.1 is H, CN, an acyloxy group or a free valency and R.sup.2 and R.sup.3 are organic radicals can be prepared in a simple manner from the corresponding compounds containing a group of the formula Ia ##STR2## by stepwise reaction with phosgene and a secondary amine R.sup.2 --NH--R.sup.3 in the presence of a molar amount of a base. The N-diorganocarbamoyl compounds containing the group I are outstanding light stabilizers, in particular for organic polymers. They can be converted by secondary reactions into other compounds which contain the group I and which are not accessible by direct phosgenation. Many of the products thus obtainable by phosgenation or conversion are novel compounds.

Dependencies are inferred from the claim text.