| 摘要 |
The present invention relates to a aqueous pigment paste for an offset ink, which paste is suitable for producing an offset ink by a flushing method, a process for the production of the aqueous pigment paste, and an offset ink obtained by a flushing method. The aqueous pigment paste for an offset ink contains a lake pigment of an azo dye obtained by coupling a diazonium salt of an aromatic amine having a soluble group and a coupler component, 3 to 15 % by weight, based on the azo dye, of a rosin, 1 to 20 % by weight, based on the azo dye, of a vehicle for an offset ink, the total amount of the lake pigment, the rosin and the vehicle being 10 to 40 % by weight, and 60 to 90 % by weight of water. |
