Invention Grant
- Patent Title: Granulated powder of low-molecular polytetrafluoro-ethylene and powder of low-molecular polytetrafluoro-ethylene and processes for producing both
- Patent Title (中): 低分子量聚四氟乙烯的粉末粉末和低分子聚四氟乙烯的粉末及其制造方法
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Application No.: US10547363Application Date: 2004-03-01
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Publication No.: US07803889B2Publication Date: 2010-09-28
- Inventor: Masayuki Tsuji , Yasuhiko Sawada
- Applicant: Masayuki Tsuji , Yasuhiko Sawada
- Applicant Address: JP Osaka
- Assignee: Daikin Industries, Ltd.
- Current Assignee: Daikin Industries, Ltd.
- Current Assignee Address: JP Osaka
- Agency: Sughrue Mion, PLLC
- Priority: JP2003-054815 20030228; JP2003-139311 20030516
- International Application: PCT/JP2004/002465 WO 20040301
- International Announcement: WO2004/076539 WO 20040910
- Main IPC: C08F214/18
- IPC: C08F214/18
Abstract:
This invention provides a granulated powder of low-molecular-weight polytetrafluoroethylene reduced in the possibility of the powder being blown up or adhering to hoppers, a low-molecular-weight polytetrafluoroethylene powder obtainable by suspension polymerization, and methods of producing these. The present invention provides a low-molecular-weight polytetrafluoroethylene-based granulated powder which is obtained by a granulation treatment of a low-molecular-weight polytetrafluoroethylene particle comprising a low-molecular-weight polytetrafluoroethylene having a number average molecular weight of not higher than 600000.
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