| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an adhesive composition which exhibits high adhesive force between various sheet-like members, especially between layers including a surface treatment layer of a plastic film, maintains high adhesive force even in high-temperature high-humidity environments and is suitable for the production of a backside protective sheet for solar cells. <P>SOLUTION: The adhesive composition for multilayer sheets contains an acrylic polyol (A) and a polyisocyanate (B). The acrylic polyol (A) has a number-average molecular weight of 10,000-100,000, a hydroxyl number of 1-100 mgKOH/g and a glass transition temperature (Tg) of higher than 10°C but 50°C or lower. The equivalent ratio of isocyanate groups derived from the polyisocyanate (B) to the hydroxy groups derived from the acrylic polyol (A), namely NCO/OH is 0.1-10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
