| 摘要 |
<p>PROBLEM TO BE SOLVED: To prepare an adhesive tape which can be stuck at relatively low temps., can insulate without fail, and has sufficient heat resistance and reliability by forming polyimide-contg. adhesive resin layers on both sides of a polyimide- contg. resin substrate having a glass transition point higher than those of the adhesive layers. SOLUTION: In an adhesive tape formed by successively laminating an adhesive layer A1, a substrate B, and an adhesive layer A2, each of these three layers is a resin layer having a thickness of 5μm or higher and contg. at least one polyimide comprising 100-40mol% at least one kind of structural units selected from among units represented by formulas I and II (wherein Ar is a divalent group selected from among groups represented by formula III; and R<1> to R<4> are each H, a 1-4C alkyl, or a 1-4C alkoxy) and 0-60mol% at least one kind of structural units selected from among units represented by formulas IV and V (wherein R is a 1-10C alkylene or CH2 OC6 H4 of which the methylene group is bonded to Si), and the substrate B has the highest glass transition point of the three layers.</p> |
