2-Phenyl-indole derivative stabilizers for PVC resins
申请人:Labaz
公开号:US04096112A1
公开(公告)日:1978-06-20
New stabilizers for polymers of vinyl chloride, the said stabilizers being 2-phenyl-indole derivatives corresponding to the formula: ##STR1## wherein R.sub.1 and R.sub.2, which are the same or different, each represent a branched- or straight-chain alkyl group containing from 1 to 12 carbon atoms, a cyclohexyl radical, a branched- or straight-chain alkyloxy group containing from 1 to 12 carbon atoms, a benzyloxy radical, a hydroxy radical or R.sub.1 and R.sub.2 represent together an alkylenedioxy radical containing from 1 to 3 carbon atoms, R.sub.3 represents a hydrogen atom, a methyl or methoxy radical, with the proviso that one at least of the substituents R.sub.1 or R.sub.2 does not represent an alkyl radical.