| 发明名称 | Highly porous separator foil | ||
| 摘要 | The invention relates to a biaxially oriented single- or multilayer porous foil, the porosity of which is generated by transformation of ss-crystalline polypropylene during orientation of the foil. The Gurley value of the foil is <250 s. The invention also relates to a process for producing the foil by using a low transverse stretching velocity for the transverse orientation process. | ||
| 申请公布号 | US9552932(B2) | 申请公布日期 | 2017.01.24 |
| 申请号 | US201414511323 | 申请日期 | 2014.10.10 |
| 申请人 | Treofan Germany GmbH & Co. KG | 发明人 | Busch Detlef;Schmitz Bertram;Klein Dominic |
| 分类号 | H01G11/52;B29C55/00;B29C55/14;C08J5/18;C08K5/098;C08L23/12;H01G9/02;H01G9/00;H01M2/16;B29D7/01;C08K3/22;B29K23/00;B29K105/04;B29K105/16;H01M2/14;H01M10/052 | 主分类号 | H01G11/52 |
| 代理机构 | Drinker Biddle & Reath LLP | 代理人 | Drinker Biddle & Reath LLP |
| 主权项 | 1. A biaxially oriented, single layer or multilayer porous film, porosity of which is generated by transformation of β-crystalline polypropylene during stretching of the film, which comprises at least one porous layer, which layer contains at least one propylene polymer and β-nucleating agent, wherein the film has a Gurley value of <250 s and wherein when the propylene polymer is a propylene block polymer, the propylene block polymer has a melting range that begins at over 120° C. | ||
| 地址 | DE | ||