Stabilizers for compositions for acid gas absorbent
US5273679A · kind A · utility
10Cited by
6References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 12, 1991 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Apr 12, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/1493
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composition for acid gas absorbent comprising: PA1 (A): 99.99 to 70 wt % of a polyethylene glycol dimethyl ether composition represented by the following formula: EQU CH.sub.3 O(C.sub.2 H.sub.4 O).sub.n CH.sub.3 PA1 wherein n is an integer of 1 to 10; and, PA1 (B): 0.01 to 30 wt % of a compound containing at least one of an --NH-- group, a phenolic --OH group and an --S-- group in one molecule thereof but free from an alcoholic --OH group, is provided. More particularly, component B may be an amine, preferably a secondary amine, or a phenolic compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.