Method for preparing composite membranes for enhanced gas separation
US4840819A · kind A · utility
20Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1987 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Apr 8, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2323/66
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Composite membranes having advantageous combinations of selectivity and permeability are prepared by the coating of a separation layer on a porous support layer containing a controlled amount of liquid in the range of from about 10% to about 90% by weight of the liquid present in the fully wet support layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.