High melt flow fluoropolymer composition
US11111612B2 · kind B2 · utility
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18References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2015 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Sep 21, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/4318
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to very high melt flow fluoropolymer compositions, having low melt viscosities. The fluoropolymers have low molecular weights of from 5 kDa to 200 kDa and melt viscosities of less than 2 kilopoise (kP) at 232° C. and 100 s−1. One use for the high melt flow fluoropolymers is in the formation of very small diameters fibers, useful for melt-blown non-woven materials. Fiber diameters of less than 9 microns, and preferably 500 to 2000 nm can be produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.