Electret webs with charge-enhancing additives
US10724171B2 · kind B2 · utility
1Cited by
63References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2016 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Sep 21, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2101/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Electret webs include a thermoplastic resin and a charge-enhancing additive. The charge-enhancing additive is a substituted benzotriazole phenolate salt or a combination of substituted benzotriazole phenolate salts. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.