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REFRIGERATING MACHINE OIL AND WORKING FLUID COMPOSITION FOR REFRIGERATING MACHINES

  • US 20130207024A1
  • Filed: 08/05/2011
  • Published: 08/15/2013
  • Est. Priority Date: 08/24/2010
  • Status: Active Grant
First Claim
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1. A refrigerating machine oil comprising an ester of a polyhydric alcohol and a fatty acid, wherein the molar ratio of C4-C6 fatty acid and C7-C9 branched fatty acid in the fatty acid is between 15:

  • 85 and 90;

    10,the C4-C6 fatty acid includes 2-methylpropanoic acid, andthe ratio of the total C4-C6 fatty acid and C7-C9 branched fatty acid in the total fatty acids composing the ester is at least 20 mol %.

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