Process for preparing phosphorotriamidothioates
US3954798A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1974 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Aug 19, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2223/049
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for preparing novel compounds represented by the formula ##EQU1## wherein R is a C.sub.10 -C.sub.100 alkylene group, R' is a C.sub.1 -C.sub.5 alkylene group, n is an integer of 1 to 4, X is NH.sub.2, NHR", or NR"R", and Y is NH.sub.2, NHR", NR"R", or halogen, wherein, R" is an alkyl or alkylene polyamino group. The process comprises: PA1 1. reacting thiophosphoryl chloride with a monoamine (e.g., diethylamine) to give a reaction product comprising about 60 to about 100 mole percent phosphorochloridodiamidothioate and about 0 to about 40 mole percent phosphoroamidodichloridothioate; PA1 2. reacting the reaction product of step (1) with an alkylene polyamine to give a phosphorotriamidothioate; PA1 3. reacting the phosphorotriamidothioate of step (2) with an alkenyl succinic anhydride or acid; and PA1 4. treating the reaction product of step (3) with a basic material to give the desired product. The product of the process is useful as an additive in lubricating oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.