Porous non-friable polymer film
US6750050B2 · kind B2 · utility
3Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2001 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Sep 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31504
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Porous films are provided which include a blend of a film forming polymer and a non-film forming material, the film having a network of pores or channels throughout the film. The porous polymer films are formed between 0° and 80° C. retain porosity at elevated temperatures and are non-friable. A process for preparing porous polymer films and their applications are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.