| 摘要 |
An ink composition for an oil marking pen is provided which comprises a coloring agent, an organic polar solvent, an oil-soluble resin and an organically modified silicone as principal components thereof. The organically modified silicone is selected from dimethyl silicone, alkyl-modified silicones, polyether-modified silicones such as a polyoxypropylene modified silicone and the like, and is contained in the ink composition in a proportion of 0.005 wt % to 10 wt %. The organic polar solvent is selected from alcohol solvents and glycol ether solvents. The oil-soluble resin is selected from ketone resins, phenol resins, xylene resins, rosin resins, styrene-organic acid copolymers and polyacrylates. The ink composition of the present invention is excellent in the ink film fixability when applied on a nonabsorbent surface such as a metal surface or a plastic surface, and suitable for oil marking pens.
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