| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an adhesive composition for solar cell back sheets which shows a small reduction in adhesive strength even if it is left in a high temperature and high humidity for a long period of time and which is appropriately usable for bounding polyester films to each other, and to provide a solar cell back sheet using the same. <P>SOLUTION: The adhesive composition for solar cell back sheets contains (C) a modified rubber which is obtained by reacting (a) rubber having two or more hydroxyl groups per molecule with (b) polyisocyanate; (D) an adhesion-imparting agent having a softening point of 85°C or higher; and (E) an crosslinking agent, and in a compounding ratio of the component (a) and the component (b), isocyanate group (NCO) of the component (b) to hydroxyl group (OH) of the component (a) is within the range of isocyanate group (NCO)/hydroxyl group (O)=0.1-0.9. <P>COPYRIGHT: (C)2012,JPO&INPIT |
