Battery separator
US4024323A · kind A · utility
49Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1976 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Apr 19, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery separator comprising a microporous sheet formed substantially of a mixture of polymeric constituents. One of the polymeric constituents is an ultra high molecular weight polyolefin having a standard load melt index of substantially 0 and an intrinsic viscosity greater than about 3.0. The other polymeric constituent is either a copolymer of an olefin and an ethylenically unsaturated monocarboxylic acid selected from the group consisting of acrylic acid and methacrylic acid, or a blend of a low molecular weight polyolefin and a polymer of acrylic or methacrylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.