PROCESS FOR MANUFACTURING ELECTRET, AND ELECTROSTATIC INDUCTION-TYPE CONVERSION ELEMENT

WIPO Patent Application WO/2010/095554

A1

Disclosed is a process for manufacturing an electret that can realize high long-term stability of electrical charges carried therein and has high thermal stability and excellent charge-retaining properties. Also disclosed is an electrostatic induction-type conversion element comprising the electret. Specifically disclosed is a process for manufacturing an electret, which is characterized by involving a step of thermally treating a composition comprising a fluorine-containing polymer and a silane coupling agent, wherein the fluorine-containing polymer has an aliphatic ring structure in the main chain thereof and also has a carboxy group or an alkoxycarbonyl group as a terminal group thereof, the silane coupling agent has an amino group, and the thermal treatment is carried out at a temperature ranging from 250 to 330°C. Also specifically disclosed is an electrostatic induction-type conversion element comprising the electret.

JP63287012	ELECTRET FIBER SHEETLIKE MATERIAL AND MANUFACTURE THEREOF
WO/2000/000267	STABLE POLYMERIC ELECTRET MATERIALS
JP57014288	ELECTRET DEVICE

KASHIWAGI, Kimiaki (Limited 12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)

JP2010/051990

August 26, 2010

February 10, 2010

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ASAHI GLASS COMPANY, LIMITED (12-1, Yurakucho 1-chome Chiyoda-k, Tokyo 05, 〒1008405, JP)
旭硝子株式会社 (〒05 東京都千代田区有楽町一丁目１２番１号 Tokyo, 〒1008405, JP)

H01G7/02; H04R19/01; H04R19/04

SENMYO, Kenji et al. (4th Floor, SIA Kanda Square17, Kanda-konyach, Chiyoda-ku Tokyo 35, 〒1010035, JP)

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