Synthesis of mono-alkyl acid phosphates with high mono-content
US4126650A · kind A · utility
15Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1977 |
| Grant date | Nov 21, 1978 |
| Priority date | — |
| Expiry date | Apr 27, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/098
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Mono-alkyl acid phosphates having the formula: ##STR1## wherein R is straight or branched alkyl having from 1 to about 25 carbon atoms, are prepared by reacting alcohol with P.sub.2 O.sub.5. The process involves suspension of P.sub.2 O.sub.5 in a heel of product comprised of a mixture of mono-alkyl acid phosphate, di-alkyl acid phosphate and free H.sub.3 PO.sub.4. Alcohol is added to the heel last, followed by mixing, and then addition of water. A mixture of mono- and dialkyl acid phosphate is obtained with a mono-content of over about 70 percent by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.