High molecular and low molecular weight fine fibers and TPU fine fibers
US10676614B2 · kind B2 · utility
0Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2017 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Aug 25, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In embodiments, the present invention provides a plurality of fine fiber strands made from a first polymer and a second polymer where the second polymer has a higher molecular weight than the first polymer. In preferred embodiments, the fine fiber strands have an average diameter of less than 2 micron, and the fine fiber strands have a length of at least 1 millimeter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.