Patent ID: 8398881
Filing Date: 2013-03-19
Classification: C09K,C10M,C10N

Abstract:
1. A refrigerating oil composition, comprising: a refrigerant (A) comprising as a predominant component propane; and a base oil (B) comprising a polyvinyl ether represented by formula (II): wherein each of R 3 and R 4 represents a hydrogen atom, a C1-C18 hydrocarbon group, or a C2-C18 acyl group; R 5 represents a methyl group; R 6 represents an ethyl group; p is an integer of 1 or more; and q is an integer of 1 or more and wherein p/(p+q) in formula (II) is 0.5 or more; wherein the composition satisfies the following conditions: (i) solubility of the refrigerant (A) in the base oil (B) is 40 mass % or less at 40° C. and 1.2 MPa; and (ii) mixture viscosity of the refrigerating oil composition is 0.1 mm