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US 7,402,615 B2Granted
Waterless waterwashable offset printing ink and method of production thereof
AssigneeSun Chemical Corporation
InventorsChristian Johnke, Bernard Fritz
Life of this patent
Estimating the term…
Abstract
A water washable waterless offset printing ink comprised of a binding agent having (i) a solid resin in an ester solvent, and (ii) an alkyd resin and/or an oil of one or more aliphatic carboxylic acid esters; a colorant; and a neutralizing agent.
Claims14
A water washable waterless offset printing ink composition comprising:
- a) a binding agent which is the reaction product of (i) a solid resin in an ester solvent, with (ii) an alkyd resin or an oil of one or more aliphatic carboxylic acid esters or both, b) a colorant, and c) a neutralizing agent in an amount sufficient to neutralize the carboxyl groups of the binding agent.
A method for preparing a water washable waterless offset printing ink comprising:
- a) formulating a binding agent, having (i) a solid resin in an ester solvent, and (ii) an alkyd resin and/or an oil of one or more aliphatic carboxylic acid esters;
- b) adding a colorant;
- and c) adding a neutralizing agent prior to adding any rheological adjuvants and solvents for saponification of any free carboxyl groups of the binding agent.
Dependencies are inferred from the claim text.