Patent ID: 6656891
Filing Date: 2003-12-02
Classification: C10M,C10N

Abstract:
A refrigerating machine oil composition comprising a base oil containing at least one oxygen-containing synthetic oil selected from the group consisting of a polyvinyl ether and a polyol ester and from 1 to 20% by weight, based on the total amount of the composition, of a polyalkylene glycol alkyl ether having a number average molecular weight of 500 to 3,000, as represented by the following general formula (I) or (II)R1â€”Oâ€”(EO)m(PO)nâ€”R2â€ƒâ€ƒ(I) R1â€”Oâ€”(EO)m(BO)nâ€”R2â€ƒâ€ƒ(II) (wherein EO represents an oxyethylene group, PO represents an oxypropylene group, BO represents an oxybutylene group, m and n each represent a positive number that satisfies the molecular weight, and R1 and R2 each represent hydrogen or an alkyl group with 1 to 10 carbon atoms, provided R1 and R2 may be the same but are not hydrogens at the same time).