Title:
エレクトレットの製造方法及び静電誘導型変換素子
Document Type and Number:
Japanese Patent JP5533852
Kind Code:
B2
Abstract:
To provide a process for producing an electret which has high stability with time and thermal stability of retained electric charge and which has excellent charge retention performance, and an electrostatic induction conversion device comprising such an electret. 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 at least 200,000. An electrostatic induction conversion device comprising such an electret.
Inventors:
Kashiwagi
Application Number:
JP2011500570A
Publication Date:
June 25, 2014
Filing Date:
February 10, 2010
Export Citation:
Assignee:
Asahi Glass Co., Ltd.
International Classes:
H01G7/02; H04R19/01
Domestic Patent References:
| JP2008266563A | 2008-11-06 | |||
| JP2004128361A | 2004-04-22 | |||
| JP2006180450A | 2006-07-06 | |||
| JP2008266563A | 2008-11-06 | |||
| JP2004128361A | 2004-04-22 | |||
| JP2006180450A | 2006-07-06 |
Foreign References:
| WO2008114489A1 | 2008-09-25 | |||
| WO2008133088A1 | 2008-11-06 | |||
| WO2008114489A1 | 2008-09-25 | |||
| WO2008133088A1 | 2008-11-06 |
Attorney, Agent or Firm:
Sumio Tanai
Masatake Shiga
Suzuki Mitsuyoshi
Noriko Yanai
Masatake Shiga
Suzuki Mitsuyoshi
Noriko Yanai