REFRIGERATING MACHINE OIL COMPOSITION

摘要

PURPOSE:To obtain the title thermally and chemically stable composition with extremely high lubricity by incorporating a base oil such as a mineral oil with a specified amount of a specific organic phosphate compound. CONSTITUTION:The objective composition can be obtained by incorporating (A) a base oil consisting of at least one kind of synthetic oil selected from mineral oils and/or synthetic hydrocarbon oils, polyether oils and ester oils with (B) (-)5.0 (pref. 0.1-1.0) wt.% of compound(s) of formula I and/or II[X<1>-X<3> are each R<1>O or R<2>O(AO)n (R<1> and R<2> are each 1-30C hydrocarbon; A is 28C alkylene;(n) is integer, 1-70)] and pref. furthermore, (C) <=5.0wt.% of a phosphoric ester of formula III (R<3> is 1-3C alkyl;(a) is integer, 0-2).