Patent ID: 8926857
Filing Date: 2015-01-06
Classification: C10M,C10N

Abstract:
1. A lubricating oil for a compression type refrigerator, comprising: at least 70% by mass of a polyvinyl ether-based compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in the range of 300 to 3,000 and a carbon/oxygen molar ratio of 4.0 or less; and at least one phosphorous compound selected from the group consisting of dioleyl phosphate and potassium salt of dioleyl phosphate, wherein the polyvinyl ether-based compound has a structure represented by the general formula (I): wherein R R R R when plural R m represents an average value of 15 to 21; k represents a number of 1 to 50; p represents a number of 15 to 50; and when plural ks and ps are present, units may be in block or in random form; and when plural R