Lubricating compound for refrigeration compressors
US6224783A · kind A · utility
0Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1994 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Jul 19, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a lubricating oil or a lubricating oil additive, particularly suitable for a R-134a (1,1,1,2-tetrafluoroethane) or R-134 (1,1,2,2-tetrafluoroethane) refrigerant, consisting of a compound (X) that can be prepared by esterification of a polyoxyethoxylated glycerol with at least one polycarboxylic acid compound having from 2 to 20 carbon atoms, preferably from 4 to 13 carbon atoms, and at least one monocarboxylic acid compound having from 2 to 20 carbon atoms, preferably from 6 to 13 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.