Salicylate salts as lubricant additives for two-cycle engines
US5688751A · kind A · utility
25Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1996 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Aug 14, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/025
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Two-stroke cycle engines can be effectively lubricated by supplying to the engine a mixture of an oil of lubricating viscosity and a hydrocarbyl-substituted hydroxyaromatic carboxylic acid or an ester, unsubstituted amide, hydrocarbyl-substituted amide, ammonium salt, hydrocarbylamine salt, or monovalent metal salt thereof in an amount suitable to reduce piston deposits in said engine. The mixture supplied to the engine contains less than 0.06 percent by weight of divalent metals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.