发明授权
- 专利标题： Polytetrafluoroethylene fine powders and their use
- 专利标题（中）： 聚四氟乙烯细粉及其用途
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申请号： US09051805申请日： 1998-04-23
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公开(公告)号： US06503988B1公开(公告)日： 2003-01-07
- 发明人: Takahiro Kitahara , Kazutaka Hosokawa , Tetsuo Shimizu
- 申请人： Takahiro Kitahara , Kazutaka Hosokawa , Tetsuo Shimizu
- 优先权： JP7-317312 19951109; JP8-237282 19960819
- 主分类号： C08F11418
- IPC分类号： C08F11418
摘要：
A polytetrafluoroethylene fine powder excellent in powder flowability which comprises fine particles (the primary particle) having a mean particle diameter of 0.05 to 1 &mgr;m, an apparent density of 0.52 to 0.70 g/ml, a standard specific gravity (SSG) of 2.14 to 2.23, and a secondary mean particle diameter of 100 to 1000 &mgr;m, antidripping agent using the above polytetrafluoroethylene fine powder, flame resistive resin composition containing this powder, and composition for inhibiting dust characteristics containing this powder.