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)—mOR3]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;
- said derivative having a kinematic viscosity of 5 to 50 cSt at 100° C.
A refrigerant composition comprising a polyoxyalkylene glycol derivative of ethyleneoxide-propyleneoxide copolymer represented by the general formula:
- R6—O—A—R7
- wherein R6 and R7 are each an alkyl group having 1 to 3 carbon atoms and A is a copolymerization chain of ethyleneoxide and propyleneoxide consisting of p-times ethyleneoxide units and q-times propyleneoxide units, and p and q are numbers satisfying the requirements:
- 0.1≦p/q≦3, 14≦p+q≦100
- and 1,1,1,2-tetrafluoroethane;
- said derivative having a kinematic viscosity of 5 to 50 cSt at 100° C.
Dependencies are inferred from the claim text.