Polyamide nanofiber nonwovens
US11674247B2 · kind B2 · utility
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29References
20Claims
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Key dates
| Filing date | Jul 22, 2022 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Jul 22, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y40/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A nanofiber nonwoven product is disclosed which comprises a polyamide with a relative viscosity from 2 to 330, spun into nanofibers with an average diameter of less than 1000 nanometers (1 micron). In general, the inventive products are prepared by: (a) providing a polyamide composition, wherein the polyamide has a relative viscosity from 2 to 330; (b) melt spinning the polyamide composition into a plurality of nanofibers having an average fiber diameter of less than 1 micron, followed by (c) forming the nanofibers into the product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.