Dihydropyridine derivatives as stabilizers for vinyl chloride polymers

Abstract

The instant invention relates to compounds of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, alkenyl, phenyl or phenylalkyl radical, R.sub.2 represents an alkyl, alkenyl or alkynyl radical, a .omega.-halogenoethyl radical, an optionally substituted benzyl radical, a phenylalkenyl radical, an optionally substituted phenyl radical, a radical of the formula R.sub.4 --O--(CH.sub.2).sub.n -- wherein n is 2, 3, or 4 and R.sub.4 represents an optionally substituted alkyl radical or a phenyl radical, R.sub.3 represents a hydrogen atom, an alkyl, alkenyl or phenyl radical. The compounds of formula I have been found to be useful as stabilizers for vinyl resins.

Dependencies are inferred from the claim text.