Preparation of tetrahydroiso-.alpha.-acids by the hydrogenation of the metal salts of iso-.alpha.-acids
US5767319A · kind A · utility
15Cited by
6References
34Claims
0Family size
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Key dates
| Filing date | Oct 30, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Oct 30, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12C9/025
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
Tetrahydroiso-.alpha.-acids are prepared from iso-.alpha.-acids metal salts by hydrogenating the salts in a reaction solvent of a lower alkanol containing about 5% to about 20% w/w water and in the presence of up to about 5-50 psig hydrogen and a hydrogenation catalyst at about 30.degree.-50.degree. C. to form tetrahydroiso-.alpha.-acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.