| 摘要 |
PURPOSE:To obtain a photopolymerizable composition improved in adhesion to metal, by adding a specified pteridine derivative to a photopolymerizable composition based on a thermoplastic organic polymer binder, an ethylenically addition-polymerizable unsaturated compound, a photopolymerization initiator, etc. CONSTITUTION:The purpose photopolymerizable composition is formed by mixing a thermoplastic organic polymer binder (A) (e.g., polymethyl methacrylate) with an addition-polymerizable unsaturated compound (B) having a plurality of ethylenically unsaturated double bonds in the molecule (e.g., trimethylolpropane triacrylate), a photopolymerization initiator (C) (e.g., anthraquinone) and a pteridine derivative (D) of the formula (wherein R1 and R2 are each H, alkyl, hydroxyl or halogen and R3 and R4 are each H, amino or hydroxyl). Examples of component D include pteridine, 2,4-dioxypteridine, etc., and its amount of addition is about 0.006-6wt% based on the total weight of the composition (dry basis). |
