Odor reduction of lubricant additives packages
US6133207A · kind A · utility
1Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1999 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Dec 22, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2223/121
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sulfurized phosphorous compounds, which are effective anti-wear, extreme pressure agents, may be formed without odor by reacting phosphorous compounds with other reactive sulfur sources, including elemental sulfur, before addition of polysulfides. The process of the present invention yields a lubricant additive package which is odor free or very low odor, thermally stable, and which contains polysulfides. Particularly useful embodiments of this invention include low odor gear lubricant additive packages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.