| 发明名称 |
Porous PTFE materials and articles produced therefrom |
| 摘要 |
Novel porous PTFE membranes are described possessing a unique combination of high strength, low flow resistance, and small pore size. Additionally, unique constructions with superior filtration and venting properties incorporating porous PTFE membranes are described. |
| 申请公布号 |
US8757395(B2) |
申请公布日期 |
2014.06.24 |
| 申请号 |
US200812211311 |
申请日期 |
2008.09.16 |
| 申请人 |
W. L. Gore & Associates, Inc. |
发明人 |
Bacino John E.;Hobson Alex R.;Strid Jason J. |
| 分类号 |
B01D71/36;B01D69/02;B01D69/06;B01D69/12;B01D39/16;B01D67/00 |
主分类号 |
B01D71/36 |
| 代理机构 |
|
代理人 |
Miller Amy L. |
| 主权项 |
1. An article comprising:
an expanded polytetrafluoroethylene (ePTFE) membrane having a Gurley versus bubble point equal to or below the line defined by the equation log(Gurley)=2.6×10−3(Bubble Point)−0.59, said ePTFE membrane having a surface area of at least 20 m2/g, wherein the bubble point of said ePTFE membrane is greater than or equal to the intersection of the line defined by the equation log(Gurley)=2.6×10−3(Bubble Point)−0.59 and the line defined by the equation log(Gurley) 5.13×10−3(Bubble Point))−1.58, and wherein the bubble point of said ePTFE membrane is less than or equal to about 877 kPa.
|
| 地址 |
Newark DE US |
