Process for producing zinc dialkyldithiophosphates exhibiting improved seal compatibility properties
US7368596B2 · kind B2 · utility
5Cited by
31References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2003 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | Feb 18, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In general terms, the present invention includes a process for producing a new zinc dialkyldithiophosphate (ZDDP) offering improved seal compatibility characteristics in engine and transmission oil packages. The present invention additionally includes zinc dialkyldithiophosphate produced in accordance with the disclosed methodologies, and oil additives, lubricants, and engines and transmission comprising the zinc dialkyldithiophosphate of the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.