Basic metal dihydrocarbylphosphorodithioates
US5015402A · kind A · utility
5Cited by
24References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1989 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Oct 24, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Basic metal dihydrocarbylphosphorodithioates and phosphoromonothioates are prepared by employing a catalytic amount of an alkali metal or alkaline earth metal hydroxide or mixtures thereof. Also basic, multiple metal complexes of various dihydrocarbylphosphorodithioic acids have been developed. These salts and complexes are highly effective antiwear and antioxidant additives for functional fluids, e.g., lubricating oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.