| 发明名称 | Process for producing electret, and electrostatic induction conversion device | ||
| 摘要 | The present invention provides a process for producing an electret which has high thermal stability of retained electric charge and which has excellent charge retention performance. This is accomplished by a process for producing an electret which includes a step of thermally treating a fluorinated polymer and a silane coupling agent, where the fluorinated polymer has an alicyclic structure in its main chain and has a carboxy group or an alkoxycarbonyl group as its terminal group; the silane coupling agent has an amino group; and the weight average molecular weight of the fluorinated polymer is at least 200,000. | ||
| 申请公布号 | US8785555(B2) | 申请公布日期 | 2014.07.22 |
| 申请号 | US201113176690 | 申请日期 | 2011.07.05 |
| 申请人 | Asahi Glass Company, Limited | 发明人 | Kashiwagi Kimiaki |
| 分类号 | C08L27/12;H01G7/02;H04R19/01 | 主分类号 | C08L27/12 |
| 代理机构 | Foley & Lardner LLP | 代理人 | Foley & Lardner LLP |
| 主权项 | 1. A process for producing an electret, which comprises a step of thermally treating a composition comprising a fluorinated polymer and a silane coupling agent, wherein the fluorinated polymer has an alicyclic structure in its main chain and has a carboxy group or an alkoxycarbonyl group as its terminal group; the silane coupling agent has an amino group; and the weight average molecular weight of the fluorinated polymer is from 200,000 to 600,000. | ||
| 地址 | Tokyo JP | ||