Vegetable oil based thermosetting lithographic ink system

Details Vegetable oil based thermosetting lithographic ink system Vegetable oil based thermosetting lithographic ink system

C - Chemistry, Metallurgy

09

D

C09D 11/02 (2006.01) B41M 1/06 (2006.01) C09D 11/06 (2006.01)

Patent

CA 2171046

Rapid thermosetting, low VOC web offset lithographic inks are prepared in the instant invention from solid resin, drying oil alkyds, bodied drying oil, vegetable oil, fatty acids, multifunctional unsaturated polyester, reducing agents and transition metal salts of organic acids. The aqueous lithographic fountain solution contains hydroperoxides or peroxides which promote free radical polymerization of the ink in contact therewith. The metal salts of organic acids function as crosslinking agents in combination with excess carboxylic acid functionality of the ink. Optionally, the reducing agent and the organic hydroperoxide or peroxide may be interchanged.

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