Oxidation of polyethylene glycols to dicarboxylic acids
US4256916A · kind A · utility
8Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1979 |
| Grant date | Mar 17, 1981 |
| Priority date | — |
| Expiry date | Aug 15, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/235
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polyethylene glycols of the type EQU HOCH.sub.2 CH.sub.2 O(CH.sub.2 CH.sub.2 O).sub.n CH.sub.2 CH.sub.2 OH wherein n is an integer of from 0 to 5, can be converted to the corresponding dicarboxylic acids of the formula EQU HOOCCH.sub.2 O(CH.sub.2 CH.sub.2 O).sub.n CH.sub.2 COOH wherein n is as previously defined, by oxidation in an aqueous solution over a fixed bed catalyst consisting of platinum on a granular carbon support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.