Patent ID: 8846781

Claim:
An ink composition comprising a pigment and a heat treated oil composition, wherein the heat treated oil composition has a viscosity from about 500 centipoise to about 1250 centipoise and the oil composition prior to heat treatment comprises at least one polyunsaturated fatty acid having three or more carbon-carbon double bonds, and either: (a) at least 5.5 wt. % of at least one polyunsaturated fatty acid having four or more carbon-carbon double bonds and at least 16.5 wt. % of linoleic acid based upon the total weight of fatty acids in the oil composition; (b) at least 5.5 wt. % of at least one polyunsaturated fatty acid having four or more carbon-carbon double bonds, less than 14.5 wt. % of palmitic acid, and at least 3.5 wt. % linoleic acid based upon the total weight of fatty acids in the oil composition; (c) at least 7.5 wt. % stearidonic acid based upon the total weight of fatty acids in the oil composition; or (d) at least 20 wt. % gamma-linolenic acid based upon the total weight of fatty acids in the composition.