Lubricant and fuel additives derived from O,O-dialkyldithiophosphoric acid and a norbornyl reactant
US4729840A · kind A · utility
4Cited by
16References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1986 |
| Grant date | Mar 8, 1988 |
| Priority date | — |
| Expiry date | Jul 11, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Reaction products of 5-norbornene-2,3-dicarboxylic anhydride O,O-dialkyldithiophosphate adduct of the formula ##STR1## have been found to be beneficial additives for functional fluids used in the machinery of motorized vehicles. These additives are effective extreme pressure agents and antiwear agents as well as antioxidants for use in such functional fluids as lubricating oils including automatic transmission fluids and hydraulic fluids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.