Process for preparing glycolic acid and its polymers
US4052452A · kind A · utility
18Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1975 |
| Grant date | Oct 4, 1977 |
| Priority date | — |
| Expiry date | Jul 29, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for preparing glycolic acid and its polymers starting from formaldehyde, wherein the formaldehyde is reacted with carbon monoxide in concentrated H.sub.2 SO.sub.4 as reaction medium, in the presence of a catalyst based on a compound of Cu (I) or of Ag, and at a temperature ranging from 0.degree. to 90.degree. C and at a pressure between 0.1 and 30 atmospheres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.