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1. (WO2018043003) PROCESS FOR PRODUCING MODIFIED MOLDED ARTICLE, MOLDED ARTICLE, DIAPHRAGM, AND DIAPHRAGM VALVE

Pub. No.:    WO/2018/043003    International Application No.:    PCT/JP2017/027855
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Wed Aug 02 01:59:59 CEST 2017
IPC: C08J 7/00
F16K 7/12
Applicants: DAIKIN INDUSTRIES, LTD.
ダイキン工業株式会社
Inventors: IMAMURA, Hitoshi
今村 均
FUNAOKA, Tatsuya
舩岡 達也
SHIMONO, Takeshi
下野 武司
Title: PROCESS FOR PRODUCING MODIFIED MOLDED ARTICLE, MOLDED ARTICLE, DIAPHRAGM, AND DIAPHRAGM VALVE
Abstract:
A process for producing a modified molded article is provided with which a diaphragm less apt to generate particles is rendered possible. The process for producing a modified molded article is characterized by comprising: a step in which a modified polytetrafluoroethylene comprising tetrafluoroethylene units and modifying-monomer units based on a modifying monomer copolymerizable with tetrafluoroethylene is molded to obtain a molded article; and a step in which the molded article is irradiated at 270-310°C with radiation in a dose of 30 kGy or larger but less than 70 kGy, thereby obtaining a modified molded article.