Production of dithiophosphoric acid-O,O-diesters
US4020129A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1975 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Apr 29, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/165
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Production of pure dithiophosphoric acid O,O-diesters of the general formula ##STR1## in which the radicals R.sub.1 and R.sub.2, being identical or different, each stand for linear and/or branched alkyl, cycloalkyl, alkenyl, alkinyl, aralkyl or aryl radicals having from 1 to 18 carbon atoms, from their salts of the general formula: ##STR2## in which R.sub.1 and R.sub.2, respectively, have the meanings given hereinabove, M stands for a metal or ammonium cation, and n stands for the valency of the particular cation. The compounds are made by dissolving the salts in the quantity of one or more strong acids necessary to ensure reaction with the resultant formation of two separate liquid phases, and separating the two phases from one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.