Cylinder Wipe Air-Drying Intaglio Ink Vehicles for U.S. Currency Inks

摘要

A family of air-dry intaglio resin alkyds has been developed. The alkyds are based on pentaerythritol, sebacic, acid, linseed oil fatty acids and succinic anhydride. In laboratory tests, intaglio inks made from these resins washed well and cured to satisfactorily resistant films. Industrial quantities for press trials have been synthesized by a third party. A second series of resins has also been developed. These resins are based on tripentaerythritol, linseed oil fatty acids and succinic anhydride. Satisfactory washing and solvent resistance are obtained in laboratory tests. A third series of resins based on poly(vinyl alcohol) was synthesized but did not appear to be satisfactory for industrial development. The temperature program is important in the synthesis of alkyds. The influence of temperature has been studied so that satisfactory resins can be made industrially in minimum time.