Seed oil of kara wila mc43 as a source of drying oil

Abstract

Considerable amount of conjugated trienoic (eleosteric acid) or methylene interrupted trienoic (lenolenic acid) acids in fatty oil contribute to form a dried film when thin film of such fatty oil is exposed to air. Generally air drying brushing paint contains long oil alkyds (more than 60% of oil to the solvent free resin) from drying oil (iodine value above 150mgg-l ) and semi drying oil (iodine value between 150mgg-1 and 120mgg-I)I. Long oil alkyd resin from drying oil tends to dry more rapidly than that from semi drying oil. Oil containing fatty acids with conjugated double bonds dry much faster than those with nonconjugated double bonds.