| 摘要 |
PROBLEM TO BE SOLVED: To provide a moisture-curable hot melt adhesive long in open time, having high initial adhesive strength and further excellent in detachability from aluminium pack.SOLUTION: The moisture-curable hot melt adhesive of the present invention which is a reaction product between a polyisocyanate compound and a raw material containing 20 to 30 mass% of crystalline polyester polyol which is a condensed polymer of linear polycarbonic acid having 6 to 12 carbon atoms and linear polyol having 2 to 6 carbon atoms, 35 to 45 mass% of polyether polyol having number average molecular weight of 400 to 10000, 25 to 35 mass% of an acrylic copolymer having number average molecular weight of 30000 or more and glass transition temperature of 40 to 90°C and 3 to 7 mass% of a higher alcohol having 18 or more carbon atoms and contains an urethane polymer containing an isocyanate group at a terminal.SELECTED DRAWING: Figure 1 |
