PUTTY COMPOSITION CURABLE WITH VISIBLE LIGHT AND MENDING COATING METHOD USING THE COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide the above composition containing a resin having polymerizable unsaturated group, a polymerizable unsaturated compound and a visible light polymerization initiator, free from generation of harmful gas, curable in a short time, usable as a one-pack solventless composition, having excellent environmental compatibility and enabling simplified coating for mending. ;SOLUTION: This composition contains (A) a resin having polymerizable unsaturated group such as an unsaturated polyester resin having a number- average molecular weight (Mn) of 500-10,000, an unsaturated epoxy resin having an Mn of 300-10,000 or an unsaturated acrylic resin having an Mn of 2,000-50,000, (B) a polymerizable unsaturated component, (C) a visible light polymerization initiator such as camphorquinone or fluorenone and as necessary further (D) a cellulose derivative and (E) a compound having phosphoric acid group. The weight ratio of the components A and B (A/B) is preferably 90/10 to 10/90 and the amount of the component C is 0.01-10wt.% based on A+B.;COPYRIGHT: (C)1997,JPO