Process for producing glyoxylic acid
US4698441A · kind A · utility
4Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1982 |
| Grant date | Oct 6, 1987 |
| Priority date | — |
| Expiry date | Nov 5, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/27
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing glyoxylic acid is disclosed which comprises oxidizing glyoxal with an aqueous oxidizing agent composition obtained from nitric acid and a nonoxidizing strong acid present in a concentration of 6 to 40 wt. % in the reaction mixture. Preferably, the nonoxidizing strong acid is hydrochloric acid and the reaction is carried out while nitric acid is gradually added to the reaction mixture so that the concentration of said nitric acid in said reaction mixture does not exceed 1 wt. % during the reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.