| 摘要 |
<p>PURPOSE:To enhance abrasion resistance, by a method wherein a printing ink comprising a specified disperse dye is used to print on the surface of a molded article comprising polybutylene terephthalate as a main constituent, and the dye is made to permeate into the inside part of the molded article. CONSTITUTION:A printing ink is prepared which comprises an ester compound of an aromatic dibasic acid with glycol as a main constituent and comprises a disperse dye in a molar quantity of 10-50% of the molar quantity of the monomer constituting the resin. The ink is used to print on the surface of a molded article comprising a polybutylene terephthalate resin as a main constituent, and the dye is made to permeate into the inside part of the article, whereby a color is formed both at the ink part and in the inside part of the molded article. In a preferable combination, the resin constituting the ink is polyethylene terephthalate and the resin constituting the molded article is polybutylene terephthalate.</p> |
