Patent 7429292 was granted and assigned to Sun Chemical on September, 2008 by the United States Patent and Trademark Office.
Disclosed is a water washable ink for offset lithographic newspaper printing containing: a modified soybean oil-based resin; a pigment; and an acid neutralization agent, wherein the water washable offset lithographic newspaper printing ink does not contain any of the following: a humectant, a surfactant or a modified linseed oil.