| 摘要 |
PURPOSE:To provide good stability of heat and storage with high sensitivity relating to a wavelength over an ultraviolet part and a visible part of a spectrum by forming a photopolymerization starting agent with combination of an onium compound and a specific acridine derivative. CONSTITUTION:A photopolymerization starting agent is combination of an onium compound with an acridine derivative expressed by a formula I. Herein, a symbol R<1> represents substituted or not phenyl radical and alkyl group or alkoxy group. Ratio of an use amount of the onium compound to the acridine derivative, shown by the formula I, is suitably 1:100 to 100:1 by weight ratio. Thus by providing high sensitivity relating to an activated light beam in a wide region from ultraviolet light to visible light, each mercury lamp of ultrahigh pressure, high pressure, intermediate pressure, low pressure, chemical lamp, carbon arc lamp, xenon lamp, metal halide lamp, various ultraviolet and visible laser lamps, fluorescent lamp, tungsten lamp, sunlight, etc. can be used as a light source. |
