| 摘要 |
<p>Disclosed is an electret having high long-term stability and thermal stability with respect to electric charges held therein, while exhibiting excellent electric charge-holding characteristics. Also disclosed is an electrostatic induction conversion device comprising the electret. The electret is characterized by being obtained from a composition which contains a compound (A) having two or more polar functional groups and a molecular weight of 50-2,000, and a polymer (B) having a reactive functional group, which is reactive with the polar functional groups, and a number average molecular weight of more than 2,000. The electrostatic induction conversion device comprises the electret.</p> |
