| 摘要 |
PROBLEM TO BE SOLVED: To provide a moisture-curable hot melt adhesive which gives a hard film, can therefore allow a decorative material to assure sufficient surface hardness when used, for example, for lamination of a decorative sheet, and has workability nearly equivalent to that of a conventional one in respect of initial tack, tack-free time, and others. SOLUTION: The moisture-curable reactive hot melt adhesive essentially consists of an amorphous polyester polyol of a Tg of 30°C or higher, a crystalline polyester polyol of a molecular weight of 1,000 to below 3,000, and a crystalline polyol of a molecular weight of 3,000-5,000 and desirably further contains a urethane prepolymer obtained by reacting a polyol containing a liquid polyol of a molecular weight of 3,000-5,000 with a polyisocyanate compound. COPYRIGHT: (C)2008,JPO&INPIT
|
