Permeation modified membrane
US4484935A · kind A · utility
17Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1983 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Jun 30, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A multicomponent membrane having improved permeation characteristics for separation of one gas from a mixture of gases by permeation of the one gas through the membrane. The membrane is in the form of a porous, anisotropic substrate membrane and a coating in contact with the substrate membrane, the coating being made of poly(dimethyl siloxane), containing 1 to 20 weight percent of a permeation-modifying radical selected from the group consisting of ##STR1## The coating is applied to the substrate in the form of a solution of 0.05 to 1 weight percent of the coating in a suitable solvent such as pentane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.