Synthetic refrigeration oil composition for HFC applications
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United States of America Patent
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Feb 28, 2012
Grant Date -
Apr 10, 2008
app pub date -
Sep 13, 2007
filing date -
Sep 15, 2006
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Abstract
Novel refrigeration compositions are disclosed herein. In an embodiment, a refrigeration composition comprises a mixture of an ester of a hydroxycarboxylic acid. The hydroxycarboxylic acid has a chain length ranging from 8 to 22 carbon atoms. The composition also comprises a carrier fluid or base oil, selected from the group consisting of an alkylbenzene, an alkylated naphthenic, a polyalkylene glycol, a polyvinylether, a polyalphaolefin, mineral oil, a polyol ester, and combinations thereof, providing improved fluidity and heat transfer, and enhanced oil return.
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