发明授权
- 专利标题： Polytetrafluoroethylene mixed powder used for insulation of product for high frequency signal transmission and product for high frequency signal transmission using the same
- 专利标题（中）： 聚四氟乙烯混合粉末用于高频信号传输产品的绝缘，产品用于高频信号传输使用
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申请号： US10311063申请日： 2001-05-29
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公开(公告)号： US06987224B2公开(公告)日： 2006-01-17
- 发明人: Katsutoshi Yamamoto , Hiroyuki Yoshimoto , Kazuo Ishiwari , Shinichi Yano
- 申请人： Katsutoshi Yamamoto , Hiroyuki Yoshimoto , Kazuo Ishiwari , Shinichi Yano
- 申请人地址： JP Osaka
- 专利权人： Daikin Industries, Ltd.
- 当前专利权人： Daikin Industries, Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Sughrue Mion, PLLC
- 优先权： JP2000-179552 20000615
- 国际申请： PCT/JP01/04497 WO 20010529
- 国际公布： WO01/97234 WO 20011220
- 主分类号： H01B7/34
- IPC分类号： H01B7/34
摘要：
A polytetrafluoroethylene mixed powder, which is obtained by mixing low molecular weight polytetrafluoroetylene powder and high molecular weight polytetrafluoroethylene powder obtained by emulsion polymerization of tetrafluoroethylene, wherein the low molecular weight polytetrafluoroetylene powder has a number average molecular weight of 1,000,000±500,000 and a maximum peak temperature of 327±5° C. in the endothermic curve appearing on the crystalline melting curve obtained by using a differential scanning calorimeter, the high molecular weight polytetrafluoroetylene powder has a number average molecular weight of 4,500,000±1,000,000 and a maximum peak temperature of 340±7° C. in the endothermic curve appearing on the crystalline melting curve obtained by using a differential scanning calorimeter, and the mixed powder has evident peak temperatures of 327±5° C. and 340±7° C. in the endothermic curve appearing on the crystalline melting curve obtained by using a differential scanning calorimeter.