| 摘要 |
<p>PURPOSE:To provide a golden ink for marking pen, which has excellent stability with time, by using a mixture of bronze powder treated with a higher satd. fatty acid and aluminum powder as a metallic flake pigment. CONSTITUTION:A mixture of bronze powder, which has a particle size of 40mu or below and whose surface is treated with a higher fatty acid such as stearic or palmitic acid, and aluminum powder in a weight ratio of 100:1-50, is used as a metallic flake pigment. 10-30wt% resin (e.g. polyacrylate or phenolic resin), 20-50wt% metallic flake pigment, an org. solvent (e.g. toluene, hexane or methyl ethyl ketone) and not more than 10wt% colorant are mixed together, each quantity being based on that of ink compsn.</p> |
