Direct process for the production of printing inks
AssigneeSun Chemical Corporation
InventorsFrancis E. Gleason, Deborah A. Emmert, Matthew McClure, Ronald W. McEwan
Life of this patent
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Abstract
A direct process for the production of a printing ink base consists essentially of the steps of (1) reacting the starting ingredients for a pigment in an agitated vessel to obtain a product that contains pigment in mother liquor, (2) placing the product in a high horsepower, high shear mixer to transfer the pigment from the aqueous phase to a non-aqueous phase, and (3) while the material is still in the mixer, adding the necessary ingredients to make a printing ink base that can further be formulated into a printing ink.
Claims4
A direct process for the production of a printing ink base that consists essentially of the steps of (1) reacting the starting ingredients for an organic pigment in an agitated vessel to obtain a product that contains about 6 to 15 percent of pigment in mother liquor, (2) placing the product of step (1) into a high horsepower, high shear mixer to transfer the pigment from the aqueous phase to a non-aqueous phase, and (3) while the material is still in the mixer, adding the ingredients to make a printing ink base.
Dependencies are inferred from the claim text.