| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an underfill agent excellent in high toughness and viscosity characteristics. <P>SOLUTION: The underfill agent includes: a polyphenyl sulfone resin (a) having a weight-average molecular weight of less than 30,000; and an epoxy resin (b), and is characterized in that the content of a solvent (c) is at most 1 wt.%. <P>COPYRIGHT: (C)2012,JPO&INPIT |
