Organic tungsten complexes
US8669386B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2012 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Oct 15, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/43
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to an organic tungsten complex prepared by providing a strongly acidic tungsten precursor having pH≦2.5, and either reacting the tungsten precursor with a nitrogenous base to form a tungsten salt intermediate having a pH ranging from ≧5 to ≦8.5, and further reacting the tungsten salt intermediate with a fatty acid derivative of an alcohol, wherein the fatty acid derivative of an alcohol contains at least one free hydroxyl group; or reacting the tungsten precursor with a fatty acid derivative of an alcohol, wherein the fatty acid derivative of an alcohol contains at least one free hydroxyl group and a nitrogenous base. Further, this invention relates to lubricating compositions containing the inventive tungsten complexes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.