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US 5,958,124 AGranted
Rotogravure or flexographic printing ink composition containing an antiwear agent
AssigneeThe Lubrizol Corporation
InventorsJohn S. Perz, Steven L. Rotz
Life of this patent
Estimating the term…
Abstract
Disclosed is a rotogravure or flexographic printing ink composition, comprising (A) an ink comprising a pigment dispersed in a fluid vehicle, said vehicle comprising resin incorporated into an aqueous or non-aqueous solvent or a mixture of such solvents; and (B) a wear reducing amount of a metal dihydrocarbyl dithiophosphate of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each independently hydrocarbyl groups containing from 3 to about 30 carbon atoms, M is a metal and a is an integer equal to the valence of M.
Claims20
A rotogravure or flexographic printing ink composition, comprising
- (A) an ink comprising a pigment dispersed in a fluid vehicle, said vehicle comprising resin incorporated into an aqueous or non-aqueous solvent or a mixture of such solvents;
- and
- (B) a wear reducing amount of a metal dihydrocarbyl dithiophosphate of the formula ##STR6## wherein R.sup.1 and R.sup.2 are each independently hydrocarbyl groups containing from 3 to about 30 carbon atoms, M is a metal and a is an integer equal to the valence of M.
Dependencies are inferred from the claim text.