Porous fluorine resin film and preparation method thereof
US11344836B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Nov 23, 2018 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Nov 7, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2433/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A porous fluorine resin film in which a fibril structure is stabilized through impregnation coating of a water-repellent and oil-repellent polymer having a high oil repellency grade, and free shrinkage also proceeds before impregnation and application of the water-repellent and oil-repellent polymer, thereby improving dimensional stability, and a method for preparing the porous fluorine resin film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.