Preparation of phosphonic and/or phosphinic acids
US4069247A · kind A · utility
26Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1975 |
| Grant date | Jan 17, 1978 |
| Priority date | — |
| Expiry date | Aug 29, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Preparation of phosphonic and/or phosphinic acids by hydrolytic cleavage of phosphonic and/or phosphinic acid alkyl esters in the presence of the phosphonic and/or phosphinic acid by carrying out the hydrolysis at a temperature of from 170.degree. to 300.degree. C with the use of at least a stoichiometric amount of water, and by distilling off the alkanol formed, optionally together with water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.