Electret fibers and filter webs having a low level of extractable hydrocarbons
US6213122A · kind A · utility
36Cited by
22References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1997 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Oct 1, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/1291
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Electret fibers that contain a polymeric material and a fluorochemical additive. The electret fibers have a low level of extractable hydrocarbon material. Electret filters that have low extractable hydrocarbon levels exhibit improved filtration performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.