| 发明名称 | Porous polytetrafluoroethylene membrane, method for producing the same, gas-permeable membrane and ventilation member using the same | ||
| 摘要 | The present invention provides a porous polytetrafluoroethylene membrane having a surface coated with a liquid-repellent agent. In this porous polytetrafluoroethylene membrane, the liquid-repellent agent is a polymer obtained by polymerization of monomers consisting essentially of CH2═CHCOOCH2CH2C6F13. This porous polytetrafluoroethylene membrane is suitable for use as a gas-permeable membrane that allows passage of gases but prevents entry of liquids and/or dust, specifically as a waterproof sound-transmitting membrane, a waterproof gas-permeable membrane, or a dustproof gas-permeable membrane. | ||
| 申请公布号 | US9630150(B2) | 申请公布日期 | 2017.04.25 |
| 申请号 | US201314418043 | 申请日期 | 2013.07.26 |
| 申请人 | NITTO DENKO CORPORATION | 发明人 | Mori Masaaki;Ikeyama Yoshiki |
| 分类号 | B01D53/22;B01D67/00;B01D71/36;C08J7/04;B01D69/06;B32B5/02;B32B5/16;B32B15/08;B32B27/08;B32B27/12;B32B27/14;B32B27/28;B32B27/32;B32B27/34;B32B27/36 | 主分类号 | B01D53/22 |
| 代理机构 | Hamre, Schumann, Mueller & Larson, P.C. | 代理人 | Hamre, Schumann, Mueller & Larson, P.C. |
| 主权项 | 1. A porous polytetrafluoroethylene membrane having a surface coated with a liquid-repellent agent, wherein the liquid-repellent agent is a polymer obtained by polymerization of a monomer consisting of CH2═CHCOOCH2CH2C6F13, and an elongation of the coated membrane at break is 200 to 600%. | ||
| 地址 | Osaka JP | ||