Process for modifying porous polymeric membrane
US4486376A · kind A · utility
21Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1982 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Jun 25, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/68
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A modified polymeric membrane having an excellent separating property is produced by applying, to a porous polymeric membrane, a volatile treating liquid containing a modifying agent which consists of at least one member selected from: (A) volatile dissolving organic liquids each capable of dissolving therein at least 1% by weight of the porous polymeric membrane at a temperature of 25.degree. C.; and PA1 (B) volatile shrinking organic liquids each capable of causing the porous polymeric membrane to shrink at a shrinkage of 3% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.