Euphorbia and Vernonia seed oil products as plasticizer‐Stabilizers for polyvinyl chloride

Seed oils of Euphorbia lagascae Spreng. and Vernonia anthelmintica (L.) Willd. were prepared, refined and epoxidized; trivernolin was prepared from V. anthelmintica and also epoxidized. These products were each comparatively evaluated as plasticizer‐stabilizers for polyvinyl chloride against commercial controls. Epoxidized Euphorbia and Vernonia oils and epoxidized trivernolin have potential value as primary plasticizers with the added advantage of increased heat and light stability; they could also be used in combination with other plasticizers utilizing the latter properties. Crude and refined Euphorbia and Vernonia oils are not considered suitable primary plasticizers because of poor compatibility and permanence; at low levels they probably could be used as stabilizers.