Porous membrane having single layer structure, battery separator made thereof, preparations thereof and battery equipped with same battery separator
US5453333A · kind A · utility
37Cited by
6References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1992 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Dec 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A porous membrane of a single layer structure formed from a first polymer having a melting point of at least 130.degree. C. and a second polymer having a melting point of up to 120.degree. C., wherein the walls of the pores of the membrane have an amount of second polymer insufficient to block the permeability of the pores under normal operating temperature conditions yet sufficient to do so when the membrane reaches a temperature equal to or greater than the second polymer's melting point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.