Multi-layer, microporous membrane, battery separator and battery
US7807287B2 · kind B2 · utility
4Cited by
5References
57Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 31, 2006 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Nov 26, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed herein is a multi-layer, microporous polyolefin membrane comprising a first porous layer of a polyethylene, and a second porous layer comprising a polyethylene, and polypropylene having a weight-average molecular weight of 6×105 or more and a fraction having a molecular weight of 1.8×106 or more being 10% or more by mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.