Refrigeration machine oil composition, refrigerant lubricating oil mixed composition, and refrigerator
AssigneeIdemitsu Kosan Co., Ltd.
InventorsGenki OKUYAMA, So NAKAJIMA
Life of this patent
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Abstract
A refrigeration machine oil composition may have good lubricating properties and sufficiently reduce friction even when a base oil containing a low-viscosity mineral oil is used and/or prevent seizure between sliding members. Such refrigeration machine oil compositions may contain a base oil containing a mineral oil, (A) at least one type selected from a specific neutral phosphate ester and an amine salt thereof, and (B) at least one type selected from a specific acidic phosphate ester, an acidic phosphite ester, and an amine salt thereof, and having a kinematic viscosity at 40° C. in a range of from 1.0 to 6.0 mm2/s.
Claims15
A refrigeration machine oil composition comprising a base oil comprising a mineral oil;
- (A) at least one type selected from a neutral phosphate ester represented by the following general formula (1) and an amine salt thereof, and (B) at least one type selected from an acidic phosphate ester represented by the following general formula (2), an acidic phosphite ester represented by the following general formula (3), and an amine salt thereof, and having a kinematic viscosity at 40° C. of 1.0 to 6.0 mm2/s:
- wherein R1 to R3 in the general formula (1) each independently represent a hydrocarbon group having 1 to 24 carbon atoms;
- R4 in the general formula (2) represents a hydrogen atom or a hydrocarbon group having 6 to 24 carbon atoms, and R5 represents a hydrocarbon group having 6 to 24 carbon atoms;
- and R6 and R7 in the general formula (3) each independently represent a hydrocarbon group having 6 to 24 carbon atoms.
Dependencies are inferred from the claim text.