发明名称 |
NOVEL POLYTETRAFLUOROETHYLENE FINE POWDER |
摘要 |
Polytetrafluoroethylne fine powder is disclosed having an average molecular weight of at least 6,000,000, an amorphous index larger than 0.1 and a number average primary particle size of 0.1 to 0.8 micron, and further having a clear endothermic peak at a temperature of 347 DEG +/-3 DEG C. and another endothermic peak or shoulder at a temperature between 330 DEG C. and the temperature of said clear endothermic peak on a crystalline melting chart recorded by a differential scanning calorimeter. An unsintered article is made which is sintered and expanded at a temperature higher than the melting point of the polytetrafluoroethylene to give a porous article having improved properties. |
申请公布号 |
DE3364547(D1) |
申请公布日期 |
1986.08.21 |
申请号 |
DE19833364547 |
申请日期 |
1983.12.10 |
申请人 |
DAIKIN KOGYO CO., LTD. |
发明人 |
HOASHI, JYUZAEMON;FUMOTO, SYOZO;OSHITA, KIYOSHI |
分类号 |
C08F14/00;C08F2/22;C08F14/26;C08F114/26;C08J3/12;(IPC1-7):C08F114/26 |
主分类号 |
C08F14/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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