Oily mist resistant electret filter media
US5472481A · kind A · utility
130Cited by
24References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1995 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Feb 1, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/39
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An oily mist resistant electret filter media is provided. The filter media includes polypropylene electret fibers and a melt processable fluorochemical additive, the additive having a melting point of at least 25.degree. C. and a molecular weight of about 500 to 2500.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.