Lubricant compositions for refrigerators comprising polyalkylene glycol and a hydrocarbon solvent
US5370812A · kind A · utility
29Cited by
21References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1993 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Jun 28, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Lubricant compositions are disclosed which comprise polyalkylene glycols and hydrocarbon solvents having 15 or less carbon atoms per molecule. The polyalkylene glycols are soluble in fluorocarbon-based refrigerants, such as for example, HFC-134a, and the hydrocarbon solvents are soluble in the polyalkylene glycols. Thus, the lubricant compositions are particularly well suited as lubricants in refrigeration systems, such as for example, automobile air conditioners, which contain fluorocarbon-based refrigerants. Refrigerant/lubricant compositions comprising refrigerants and the lubricant compositions are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.