Patent ID: 6846430

Claim:
A refrigerating oil composition comprising (A) a synthetic oil component having a pour point of −10° C. or lower comprising one or more polyalkene glycol compounds represented by formula (1): R 1 —O-A-R 2 (1) wherein one of R 1 or R 2 is a hydrogen atom and the other one of R 1 or R 2 is an alkyl group having 1 to 4 carbon atoms, A is a homopolymer of propylene oxide or a copolymer of ethylene oxide and propylene oxide having a number of ethylene oxide units of m and a number of a propylene oxide units of n, wherein m and n satisfy the following relations: 0 ≦m/n≦ 10, and 5 23 m+n≦ 100; (B) a purified mineral oil component comprising one or more sulfur components, wherein the weight ratio (A):(B) is in a range of 25:75 to 99:1 and an amount of the sulfur components derived from component (B) in the composition is in a range of 5 to 1,000 ppm; and (C) ammonia.