Lubricating oil compositions for refrigerators

Details Lubricating oil compositions for refrigerators Lubricating oil compositions for refrigerators

C - Chemistry, Metallurgy

10

M

253/65

C10M 107/34 (2006.01) C09K 5/04 (2006.01) C10M 111/04 (2006.01) C10M 169/04 (2006.01) C10M 171/00 (2006.01)

Patent

CA 1334750

A lubricating oil composition for a refrigerator using therein 1,1,1,2-tetrafluoroethane as the refrigerant, comprising as the base oil a polyoxyalkylene glycol monoether of the following general formula Image wherein R1 is an alkyl group having 1-18 carbon atoms, m is an integer of 5-70, R2 is an alkylene group having 2-4 carbon atoms and a ratio of 0-0.8 between (the number of - OR2 - group wherein R2 is ethylene group)/m in the molecule, the polyoxyalkylene glycol monoether having a specified pour point and a specified kinematic viscosity. In one embodiment, the lubricating oil composition may further comprise a specified phosphate and at least one kind of a specified epoxy compound to further improve the oil composition in properties.

595643

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