| abstract |
(57) [Summary] (with correction) [Problem] From the vicinity of 800 nm using a semiconductor laser, Y It has high transparency of laser light having a wavelength of around 1100 nm by an AG laser, has high robustness such as heat resistance and light resistance, and has good migration resistance and chemical resistance, and has a clear hue. SOLUTION: A coloring agent for a laser light transmitting colored resin composition containing an anthraquinone salt forming dye of the formula (1). (1) The anthraquinone-based salt-forming dye can be obtained, for example, by reacting an anthraquinone-based acid dye with an organic amine. Specifically, it can be obtained by an ionic reaction between an anion caused by a sulfonic acid group in an anthraquinone-based acid dye and an ammonium ion caused by an organic amine. |