Novel alicyclic polyimide gas separation membranes
US4988371A · kind A · utility
27Cited by
20References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1989 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Sep 12, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1082
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to novel polyimide gas separation membranes derived from alicyclic dianhydrides and aliphatic, alicyclic, or aromatic diamines, and a process for using such membranes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.