Amine heat stable salt neutralization having reduced solids
US5912387A · kind A · utility
2Cited by
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21Claims
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Inventor
Key dates
| Filing date | Jan 28, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Jan 28, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/1425
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is disclosed for the neutralization of amine or alkanolamine heat stable salts with aqueous KOH or with alkali metal base, such as potassium hydroxide, sodium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate or potassium bicarbonate formulated with amines or alkanolamines. The process results in less solid formation than commonly used alkali metal bases such as aqueous sodium hydroxide or aqueous potassium carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.