Method of producing porous polymer film and porous polymer film produced by the method
US8916619B2 · kind B2 · utility
1Cited by
6References
5Claims
0Family size
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Key dates
| Filing date | Jun 16, 2010 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Feb 27, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A porosity is freely controlled in preparation of a porous polymer film by a phase separation method. A solvent absorption sheet is used for a solvent in a polymer solution so that the coating film of the polymer solution may be covered with the sheet. After that, the solvent in the film is selectively removed. Then, the resultant is immersed in a poor solvent. Thus, a porous polymer film can be produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.