Fluid compositions containing refrigeration oils and chlorine-free fluorocarbon refrigerants
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United States of America Patent
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May 30, 2006
Issued Date -
N/A
app pub date -
Apr 9, 1998
filing date -
Dec 28, 1989
priority date (Note) -
Expired
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Abstract
A fluid composition for a refrigerator, which comprises a chlorine-free fluorocarbon refrigerant and a refrigerator oil, said refrigerator oil consisting essentially of a tetraester of pentaerythritol of formula (1) ##STR00001## with both 2-ethylhexanoic acid and 3,5,5-trimethylhexanoic acid, said refrigerator oil exhibiting a pour point not higher than -10.degree. C.
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