Refrigerating machine oil and working fluid composition for refrigerating machines

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United States of America Patent

PATENT NO 9005470
APP PUB NO 20130207024A1
SERIAL NO

13818170

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The refrigerating machine oil of the invention includes 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, and the 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 %. The working fluid composition for a refrigerating machine according to the invention comprises the refrigerating machine oil, a difluoromethane refrigerant and/or an unsaturated fluorinated hydrocarbon refrigerant.

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Patent Owner(s)

  • JX NIPPON OIL & ENERGY CORPORATION;JX NIPPON & ENERGY CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Okido, Takeshi Tokyo, JP 26 112
Saito, Masanori Tokyo, JP 98 1121
Takahashi, Kuniko Tokyo, JP 2 62
Takigawa, Katsuya Tokyo, JP 32 922

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