Process for the continuous preparation of glyoxylic acid
US5068417A · kind A · utility
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9Claims
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Key dates
| Filing date | May 25, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | May 25, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/09
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for continuous preparation of a concentrated aqueous solution of glyoxylic acid by hydrolysis of glyoxylic acid ester hemiacetals, wherein glyoxylic acid ester hemiacetals are treated with steam in countercurrent in a reactor cascade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.