ULTRAVIOLET-CURING SOLDER-RESISTANT INK COMPOSITION FOR DRY LITHOGRAPHY

摘要

PURPOSE:To provide the titled ink compsn. containing an ultraviolet curing prepolymer and a modified product thereof and forming a printable cured film excellent in resistance to heat of soldering and solvent and pencil hardness without causing ground staining of non-image areas. CONSTITUTION:The titled ink compsn. contains (A) 10-80pts.wt. ultraviolet curing prepolymer (e.g., urethane acrylate, melamine acrylate or epoxy acrylate) and (B) 5-60pts.wt. reaction product obtained by interaction of 20-70pts.wt. said prepolymer, 30-80pts.wt. organopolysiloxane and 1-10pts.wt. aluminum chelate compd.