Phosphorus-containing compositions for refrigeration systems
US5405546A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1993 |
| Grant date | Apr 11, 1995 |
| Priority date | — |
| Expiry date | Aug 24, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is generally directed to a composition comprising: PA0 (A) at least 50% by weight of a fluorine-containing hydrocarbon having one or two carbon atoms; and PA0 (B) from about 9% to about 30% by weight of a phosphorus-containing lubricant composition comprising at least one compound characterized by the formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrocarbyl groups or hydrocarbyloxyalkylene groups and R.sub.1 and R.sub.2 taken together have from 2 to about 24 carbon atoms excluding any oxyalkylene carbon atoms; and Z is a hydrocarbyl group having 1 to about 18 carbon atoms. The present invention provides phosphorous-containing compositions which are compatible with fluorine-containing hydrocarbons used in refrigerators and air-conditioners, and are accordingly useful as refrigeration liquids in refrigerators and air-conditioners including auto, home, and industrial air-conditioners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.