Glossary

O

Oil Length
The ratio of oil to resin expressed as a percentage of oil by weight in the resin. Used to determine the physical properties of a resin.

Opacity
The ability of a paint film to obliterate or hide the color of the surface to which it is applied. See “Hiding”.

Orange Peel
The dimpled appearance of a dried paint film resembling the peel of an orange.

Organic
Designation of any chemical compound containing carbon.

Organic Zinc
A zinc rich coating utilizing an organic resin such as an epoxy.

Osmosis
The diffusion of liquid through a paint film or other such membrane.

Overspray
Sprayed coating that is dry when it hits the surface resulting in dusty, granular adhering particles, reducing gloss and presenting a poor appearance.

Oxidation
The formation of an oxide. The combining of oxygen with any compound.