Patent ID: 11952500
Assignee: KAO CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. An aqueous gravure ink comprising a pigment, a water-soluble organic solvent, a surfactant and water, in which:
the water-soluble organic solvent comprises a glycol ether having a boiling point of not lower than 100° C. and not higher than 260° C.;
the surfactant comprises a silicone-based surfactant comprising a constitutional unit represented by the following formula (1);
a content of the water-soluble organic solvent in the ink is not less than 1% by mass and not more than 10% by mass; and
a content of water in the ink is not less than 50% by mass and not more than 80% by mass,, wherein m and n are numbers of respective structural units; a is an integer of not less than 0 and not more than 40; b is an integer of not less than 1 and not more than 40; R is a hydrogen atom or an alkyl group; and a ratio of [(a+b)/(m/n)] is not less than 1.60 and not more than 4.5.