Lubricating oil composition for refrigerant and method of use
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United States of America Patent
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Dec 13, 1994
Grant Date -
N/A
app pub date -
Sep 17, 1993
filing date -
Sep 17, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides for a refrigeration lubricant for use with R-134a refrigerant. The lubrication composition of the invention combines a polyalkylene glycol synthetic lubricant or a polyolester synthetic lubricant with conventional mineral oil. The composition has enhanced lubricity which is unexpected in view of the fact that mineral oil is known to be incompatible with R-134a refrigerant. The lubricant compositions of the present invention are useful to replace the R-12 refrigerant lubricants which are presently in use.
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Family
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