| 摘要 |
PURPOSE:To enhance abrasion resistance, chemical resistance and reliability by incorporating respective microdispersions of a copolymer represented by a specific formula and polyphenol and a colorant on a base material as essential components. CONSTITUTION:A microdispersion of a copolymer represented by formula 1 (wherein R1 is H or CH3 and R2 is either one of CH3, C2H5, C3H7 and C4H9), a microdispersion of polyphenol and a colorant are contained on a base material as essential components. Concretely, as the substance becoming the main material of an ink layer, a copolymer mainly constituted of acrylonitrile or methacrylonitrile and glycidyl methacrylate or glycidyl acrylate is used. The compositional ratio of these comonomers is pref. set so that m is 10-90% and n is 10-90%. Polyphenol is contained in an amount of 0.1-20 pts.wt. per 100 pts.wt. of the copolymer. |
