Lead and sulphuric acid accumulator, separator for a lead/sulphuric acid accumulator and process to reduce the formation of dark deposits in a lead/sulphuric acid accumulator
US5246798A · kind A · utility
11Cited by
5References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1992 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Feb 26, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lead/accumulator with at least one separator made from filled microporous polyolefins is described, in which the formation of colored, mostly dark and often adhesive deposits occurring in practice is reduced in quantity. This is achieved by the fact that in the accumulator, there are present one or more non-ionic surfactants of a specific structure, the HLB value of which amounts to at least 5. In addition a separator made from filled microporous polyolefins is described, which contains one or more of these surfactants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.