Chemical Engineering - Chemical Process - Discussion

Drying oils, like linseed, tung, and poppy seed oil, are the go-to choice for oil-based paints because of a crucial chemical property: they harden through a process called oxidative polymerisation.

When exposed to air, the unsaturated fatty acids in these oils absorb oxygen and form a tough, solid, and durable film.

Oil paint is a type of slow-drying paint that consists of particles of pigment suspended in a drying oil, commonly linseed oil.

All the oil except drying oil has vaporising capacity less, due to that rate of drying is slow, For paints inherent characteristics require is drying.