Color improvement of phosphate esters
US3931362A · kind A · utility
1Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1974 |
| Grant date | Jan 6, 1976 |
| Priority date | — |
| Expiry date | Dec 23, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for decolorizing and stabilizing alkylphenyl esters of phosphoric acid which comprises contacting the esters with an effective amount of an oxidizable nitrogenous compound for a sufficient length of time to decolorize and stabilize the esters against subsequent color formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.