Nanosized particles of molybdenum sulfide and derivatives, method for its preparation and uses thereof as lubricant additive
US6878676B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2001 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Jun 15, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M159/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricant composition is disclosed that comprises: (a) a lubricant and (b) at least one molybdenum-containing compound in the form of surface-capped nanosized particles of the general formula: (Z)n(X—R)m wherein Z is an inorganic moiety comprising molybdenum and sulfur in the form of particles having dimensions in the range of from about 1 to about 100 nm; (X—R) is a surface-capping reagent wherein R is a C4 to C20 straight or branched-chain alkyl or alkylated cycloalkyl radical or radicals and X is a functional group capable of specific sorption and/or chemical interaction with molybdenum/sulfur moiety; n is the number of molecules of Z in the particles; m is an integer representing the amount of surface-capping reagents relative to a single particle; and the ratio of m to n is in the range of from about 1:1 to about 10:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.