| 摘要 |
PURPOSE:To obtain the composition absorbing no visible rays, thus useful, e.g. for printing copy-preventive marks, by incorporating a color agent consisting of a specific aluminum compound in a UV-curing resin component comprising a prepolymer, monomer, photopolymerization initiator and auxiliary. CONSTITUTION:The composition can be obtained by incorporating (A) 10.0-90.0wt.% of a UV-curing resin component comprising a prepolymer, monomer, photopolymerization initiator and auxiliary with (B) 10.0-30.0wt.% of a color agent consisting of an aluminum compound of the formula (n is 1 or 2; R is H, 1-12C alkyl, etc.; X is ClO4<->, BF4<->, etc.). This composition, which has high IR absorptivity, is hard to visibly recognize when printed. |
