Lubricating oil for refrigerator with compressor
AssigneeIdemitsu Kosan Co., Ltd.
InventorsYasuhiro Kawaguchi, Nobuaki Shimizu, Masato Kaneko, Hiroshi Nagakawa
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Abstract
A lubricating oil for compression-type refrigerator includes, as a main component, a polyoxyalkyleneglycol derivative represented by the general formula: R1(OR2)m-OR3]n wherein R1 is a methyl group, R2 is a propylene group, R3 is a methyl group, n is an integer of 1 and m is an integer of 12 to 80, and 1,1,1,2-tetrafluoroethane. The derivative has a kinematic viscosity of 5 to 50 cSt at 100° C.
Claims3
A refrigerant composition which comprises at least one polyoxyalkylene glycol derivative represented by the general formula:
- R1—[—(OR2)m—OR3]n
- wherein R1 is an alkyl group having 1 to 10 carbon atoms, R2 is a propylene group, R3 is an alkyl group having 1 to 10 carbon atoms, n is an integer of 1 and m is an integer of 12 to 80 and at least one hydrogen-containing fluorocarbon compound;
- said derivative having a kinematic viscosity of 2 to 9.70 cSt at 100° C.
A method for effecting lubrication in compression-type refrigerators using at least one hydrogen-containing fluorocarbon compound as a refrigerant which comprises employing as a lubricant a lubricating oil comprising, as a main lubricant component, at least one polyoxyalkyleneglycol derivative represented by the general formula
- R1—[—(OR2)m—OR3]n
- wherein R1 is an alkyl group having 1 to 10 carbon atoms, R2 is a propylene group, R3 is an alkyl group having 1 to 10 carbon atoms, n is an integer of 1 and m is an integer of 12 to 80 and said derivative having a kinematic viscosity of 2 to 9.70 cSt at 100° C.
Dependencies are inferred from the claim text.