Removal of low level ethylene oxide contaminants by treatment of contaminated gases with cationic exchange resins at gas-solid interface reaction conditions
US4828810A · kind A · utility
5Cited by
1References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | May 18, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J39/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of removing low levels of ethylene oxide (1% by volume or less) from ethylene oxide contaminated gases is provided. The removal is effected by contacting the ethylene oxide with a solid, cationic ion exchange resin at conditions such that the quantity of water present in the reaction zone is at a level such that the reaction of the ethylene oxide with resin occurs at a gas-solid interface to form an ethylene oxide derivative polymer which is bound to said resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.