Refrigeration oils comprising esters of hindered alcohols
US5705086A · kind A · utility
18Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1996 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | Apr 16, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2205/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improved refrigeration lubricants useful in compression refrigeration units are esters, exhibit an excellent balance of performance characteristics, notably in the combination of good miscibility, hydrolytic stablity, wear resistance coupled with a viscosity within the range required in many commercial refrigeration units. These esters are of a hindered dihydric or trihydric alcohol such as trimethylolpentanediol and a fatty acid, where at least 80 number percent of the acyl groups are straight chain groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.