2,3,5-Trialkylsubstituted hydroxybenzyl isocyanurates

Abstract

The compounds are 2,3,5-trialkylsubstituted hydroxy benzyl isocyanurates having the formula ##STR1## where R.sub.a is a 2,3,5-trialkylsubstituted hydroxybenzyl group of the formula II or hydrogen, and R.sub.b is a 2,3,5-trialkylsubstituted hydroxybenzyl group of formula II ##STR2## wherein R.sup.1 and R.sup.2 are alkyl or cycloalkyl groups, and R.sup.3 is hydrogen or alkyl One method for making the compounds of this invention is by reacting a 2,3,6-trialkyl-4-(dimethylamino)phenol with cyanuric acid. The compounds are useful as stabilizers of organic materials, especially polyolefins, which deteriorate upon exposure to light and heat.

Dependencies are inferred from the claim text.