| abstract |
A monocarbonate represented by the formula (R 1 ) n Ph-O(R 2 O) m -CO-O-CH 2 -C(R 3 )(R 4 )(R 5 ), a lubricating oil containing this monocarbonate, and a process for preparing a composition of this monocarbonate, a monocarbonate to which are bonded, via carbonic acid, two (R 5 )(R 4 )(R 3 )C-CH 2 - groups and a monocarbonate to which are bonded, via carbonic acid, two (R 1 ) n Ph-(OR 2 ) m -groups. The monocarbonate exhibits excellent lubricating property, cleaning property and electrically insulating property, exhibits excellent compatibility with hydrogenated fluorocarbons such as R-134a, and can be favorably used as a lubricating oil for refrigerators such as electric refrigerators and air conditioners for room. |