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US 11,384,309 B2Granted
Refrigerator oil and hydraulic fluid composition for refrigerators
AssigneeEneos Corporation
InventorsYohei Shono, Fumiyuki Nara, Takeshi Okido, Hidetoshi Ogata
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Abstract
One aspect of the present invention is a refrigerating machine oil containing: a base oil containing an ester of an alcohol and a fatty acid; a compound represented by the following formula (1): wherein R1 and R2 each independently represent a monovalent hydrocarbon group, R3 represents a divalent hydrocarbon group, and R4 represents hydrogen atom or a monovalent hydrocarbon group, and the refrigerating machine oil having a kinematic viscosity at 40° C. of 10 mm2/s or less.
Claims6
A refrigerating machine oil comprising:
- 90% by mass or more based on a total amount of the refrigerating machine oil of a base oil comprising an ester of an alcohol and a fatty acid, wherein the base oil has a nonpolar index of 30 or more and 50 or less;
- and
- 0.001% by mass or more and 0.1% by mass or less based on a total amount of the refrigerating machine oil of a compound represented by the following formula (1):
- wherein R1 and R2 each independently represent an alkyl group having 1 to 10 carbon atoms, R3 represents an alkylene group having 1 to 10 carbon atoms, and R4 represents hydrogen atom or an alkyl group having 1 to 10 carbon atoms,
- wherein the refrigerating machine oil has a kinematic viscosity at 40° C. of 1 mm2/s or more and 10 mm2/s or less.
2 more elements
A working fluid composition for a refrigerating machine comprising:
- a refrigerating machine oil;
- and
- a refrigerant,
- wherein the refrigerating machine oil comprises:
- 90% by mass or more based on a total amount of the refrigerating machine oil of a base oil comprising an ester of an alcohol and a fatty acid, wherein the base oil has a nonpolar index of 30 or more and 50 or less;
- and
- 0.001% by mass or more and 0.1% by mass or less based on a total amount of the refrigerating machine oil of a compound represented by the following formula (1):
- wherein R1 and R2 each independently represent an alkyl group having 1 to 10 carbon atoms, R3 represents an alkylene group having 1 to 10 carbon atoms, and R4 represents hydrogen atom or an alkyl group having 1 to 10 carbon atoms,
- wherein the refrigerating machine oil has a kinematic viscosity at 40° C. of 1 mm2/s or more and 10 mm2/s or less.
6 more elements
Dependencies are inferred from the claim text.