Refrigerator oil.

摘要

The invention relates to a refrigerator oil lubricant composition characterised in that it comprises (a) a polyoxyalkylene glycol ether having the formula (I) R1O(AO)nR2 (I) wherein AO is one or more groups selected from the group consisting of <CHEM> -CH2CH2- and -CH2O- and, in the case of two or more groups, they may together form a block copolymer or a random copolymer; n = p + q + r in which p is the average number of the groups represented by <CHEM> q is the average number of the groups represented by -CH2CH2O-, r is the average number of the groups represented by -CH2O-, p is in the range of 1 to 80, q is in the range of 0 to 60, r is 0 or 1 and the relation 0 </= q/(p+q) </= 0.6 holds; and R1 and R2 are each a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms provided that they should not be simultaneously hydrogen atoms, and having a kinematic viscosity at 40 DEG C in the range of 6 to 500 cSt; and (b) 0.01 to 25 parts by weight, based on 100 parts by weight of said polyoxyalkylene glycol ether, of a polyglycidyl ether compound prepared from a dihydric or trihydric alcohol.