Plugged microporous film
US5006187A · kind A · utility
12Cited by
18References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1989 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Jun 15, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3886
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of making a plugged microporous film from a film which comprises a structural component having pores extending therethrough, and a plugging material within the pores, the method comprising: PA0 (a) selectively treating the plugging material so that its susceptibility to a crosslinking treatment differs from a first region of the film to a second region thereof; PA0 (b) crosslinking the plugging material at the second region of the film; and PA0 (c) removing the uncrosslinked plugging material from the first region of the film leaving plugs of crosslinked plugging material in the pores at the second region of the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.