Patent ID: 8070978
Filing Date: 2011-12-06
Classification: C09K,C10M,C10N,Y02P

Abstract:
1. A refrigerating machine oil composition comprising a base oil comprising a hydrogenated α-olefin oligomer as a main component and at least one additive selected from the group consisting of an extreme pressure agent, an oiliness agent, an antioxidant, an acid scavenger and a defoaming agent; wherein the hydrogenated α-olefin oligomer is obtained by hydrogenating an oligomer of an α-olefin having 5 to 20 carbon atoms which is obtained by oligomerization of an α-olefin having 5 to 20 carbon atoms in the presence of a metallocene catalyst, a ratio of a weight-average molecular weight to a number-average molecular weight of the hydrogenated α-olefin oligomer is 1.5 or less, and the hydrogenated α-olefin oligomer has a kinematic viscosity of 2.78 to 4.96 mm