Grease composition with improved antiwear properties
US5641730A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Nov 29, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2010/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An antiwear additive has an alkali metal borate; and a thiadiazole compound. That thiadiazole compound may be a 2,5-dimercapto-1,3,4-thiadiazole, a 2-alkylpolythio-5-mercapto-1,3,4-thiadiazole, or a 2-alkylestermercapto-5-mercapto-1,3,4-thiadiazole. If the thiadiazole compound is a 2-alkylpolythio-5-mercapto-1,3,4-thiadiazole or a 2-alkylestermercapto-5-mercapto-1,3,4-thiadiazole, the alkyl group has from one to twenty carbon atoms. If the thiadiazole compound is a 2-alkylpolythio-5-mercapto-1,3,4-thiadiazole, the polythio group has from two to eight sulfur atoms. This antiwear additive can be used with a base grease in a grease composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.