| 摘要 |
PROBLEM TO BE SOLVED: To obtain an adhesive which gives a PET-laminated metal plate which is excellent in long-time usability and blocking resistance of its adhesive layer and is good in adhesiveness, processibility and retort resistance. SOLUTION: This electron beam-curing adhesive contains (a) 100 pts.wt. of a polyester resin which is obtained by adding a polybasic acid to a polyester prepolymer having hydroxyl groups and has a number average molecular weight of 10,000-40,000, the ratio of the weight average molecular weight to the number average molecular weight (Mw/Mn) of 2.5-7.0, a glass transition temperature of 20-55 deg.C, a hydroxyl value of 3-15 KOHmg/g and an acid value of 5-30 KOHmg/g and (b) 3-30 pts.wt. of a polymerizable unsaturated oligomer having polymerizable unsaturated double bonds of 5-15 mol/kg, a number average molecular weight of 200-2,000 and a hydroxyl value of 0-20 KOHmg/g. Another objective polyester film-laminated metal plate is obtained by laminating polyester films, which may have an ink layer, with this adhesive. |
