Method for controlling membrane permeability by microwave and method for producing organic separation membrane
US6706088B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2002 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Nov 27, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a method for controlling a permeability of a gas to be separated through an organic separation membrane in a separation process of gasses by an organic separation membrane, wherein the method comprises irradiating the organic separation membrane with a microwave to cause vibration/rotation of a molecule or a domain thereof constituting the organic separation membrane and alter the molecular structure and/or polarity of the organic separation membrane, and thus altering a permeability of the gas to be separated; and also a method for producing an organic separation membrane, comprising irradiating with a microwave in a process of producing the organic separation membrane to alter the permeability thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.