Visible light-curable resin composition and its use



(57)【要約】 【課題】 可視光に対する感度、安全作業性、作業効 率、製品の品質安定性に優れた可視光硬化性樹脂組成物 を提供する。 【解決手段】 最大波長が500〜620nmの範囲か ら選ばれた最大波長を有する比視感度の大きい安全光の 照射環境下で使用する可視光硬化性樹脂組成物であり、 該組成物が光硬化性樹脂(A)、光反応開始剤(B)及 び下記一般式(1)で表される有機ホウ素化合物を少な くとも1種含む光増感剤(C)とを含有した可視光硬化 性樹脂組成物であって、その組成物から形成される未感 光被膜の吸光度が上記安全光の最大波長の±30nmの 範囲において0.5以下であることを特徴とする可視光 硬化性樹脂組成物。 【化1】
PROBLEM TO BE SOLVED: To obtain a visible light-curable resin compsn. capable of being handled under the condition of bright safelight and having high sensitivity by incorporating a photosensitizer contg. at least one specified organoboron compd., and specifying the absorbance of formed unexposed film a specified value or below. SOLUTION: The resin compsn. used in an environment irradiated with safelight having the max. wavelength selected from the range of 500-620 nm and high luminous efficiency contains a photosetting resin, a photoreaction initiator and a photosensitizer contg. at least one organoboron compd. represented by the formula. The absorbance of an unexposed coating formed from the compsn. is <=0.5 in the range of (the max. wavelength of the safelight) ±30 nm. In the formula, R1-R3 and R5-R7 are each H, a halogen, nitro or the like, R4 is H, cyano, an alkyl or the like and R8 and R9 are each a halogen, alkyl, aralkyl or the like.




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