Lubrication oil composition
US5411672A · kind A · utility
36Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1993 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Nov 10, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B77/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The lubricating oil composition of the present invention comprising an ester mixture as the main ingredient consisting of (A) 60-95% by weight of an ester of a hindered alcohol with a straight-chain saturated fatty acid having 8-12 carbon atoms, and (B) 5-40% by weight of a complex ester of a hindered alcohol with a straight-chain saturated fatty acid having 8-12 carbon atoms and also with a dibasic acid having 20-50 carbon atoms, the composition having excellent performances such as biodegradability, high-temperature engine cleanliness, lubricity and piston seizure preventiveness which are conductive to environmental protection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.