Production of acid orthophosphoric acid ester mixtures
US4141938A · kind A · utility
17Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1977 |
| Grant date | Feb 27, 1979 |
| Priority date | — |
| Expiry date | Nov 16, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/362
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Orthophosphoric acid esters are made by reacting phosphorus(V)-oxide with an alcoholic component. More specifically, phosphorus(V)-oxide is reacted by mixing or kneading it with a blend consisting of a monohydric alcohol and an alkane polyol containing 2 to 12 carbon atoms and 2 to 6 hydroxyl groups, at approximately 0 to 120.degree. C. with the exclusion of moisture, in the presence of an inert gas, and over a period of approximately 1 to 6 hours. The resulting reaction product is cooled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.