| 发明名称 |
MODIFIED POLYTETRAFLUOROETHYLENE FINE POWDER AND UNIAXIALLY STRETCHED POROUS BODY |
| 摘要 |
The present invention aims to provide a modified polytetrafluoroethylene fine powder capable of providing a stretched body having high strength, a small pore size, and excellent homogeneity. The modified polytetrafluoroethylene fine powder of the present invention has non-melt-processability, has a standard specific gravity of 2.155 or lower, includes 0.015 mol % or more of a polymer unit derived from perfluoro(methyl vinyl ether) in all the monomer units, is obtained by emulsion polymerizing tetrafluoroethylene and at least the perfluoro(methyl vinyl ether) in the presence of a fluorosurfactant having a LogPOW value of 3.4 or lower, and has an extrusion pressure of 20.0 MPa or lower. |
| 申请公布号 |
US2016289361(A1) |
申请公布日期 |
2016.10.06 |
| 申请号 |
US201415038307 |
申请日期 |
2014.12.01 |
| 申请人 |
DAIKIN INDUSTRIES, LTD. |
发明人 |
YAMANAKA Taku;ONO Makoto;YASUDA Kohei;YAMADA Masahiko;CHAEN Shinichi;SAWADA Yasuhiko;TAIRA Takahiro;YOSHIDA Hirotoshi;KATO Taketo |
| 分类号 |
C08F214/26;C08J5/18 |
主分类号 |
C08F214/26 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A modified polytetrafluoroethylene fine powder,
having non-melt-processability, having a standard specific gravity of 2.155 or lower, comprising 0.015 mol % or more of a polymer unit derived from perfluoro(methyl vinyl ether) in all the monomer units, being obtained by emulsion copolymerizing tetrafluoroethylene and at least the perfluoro(methyl vinyl ether) in the presence of a fluorosurfactant having a LogPOW value of 3.4 or lower, and having an extrusion pressure of 20.0 MPa or lower. |
| 地址 |
Osaka-Shi, Osaka JP |
