Water-based offset lithographic printing ink

Details Water-based offset lithographic printing ink Water-based offset lithographic printing ink

C - Chemistry, Metallurgy

09

D

C09D 11/02 (2006.01)

Patent

CA 2242558

A water-based offset lithographic printing ink comprising water; a macromolecular binder which: (i) is optionally present and is of the type which is water-soluble, regardless of the pH of the water phase, (ii) is present and is of the type which is water-soluble only at a pre-determined pH value, or (iii) is optionally present and is an aqueous emulsion; a pigment; and a re-wetting agent. A non ionic surfactant may also be present in the ink.

La présente invention concerne une encre à l'eau pour impression offset constituée d'eau, d'un liant macromoléculaire, d'un pigment et d'un lubrifiant. Le liant macromoléculaire: (i) peut être éventuellement présent et de type hydrosoluble quel que soit le pH de la phase aqueuse, ou (ii) être présent et de type hydrosoluble uniquement pour une valeur définie du pH, ou (iii) être éventuellement présent et sous forme d'une émulsion dans l'eau. Un agent tensio-actif non ionique peut également être présent dans l'encre.

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