Patent Number: 6,251,300

Title: Refrigerator oil compositions and fluid compositions for refrigerator

Abstract: A refrigerator oil composition for use with an HFC refrigerant containing HFC-134a, HFC-125 or a mixture thereof, which comprises component (A) and component (B), said component (A) being 70 to 99% by weight of an alkylbenzene oil containing at least 60% by weight, based on the total weight of component (A), of alkylbenzenes having a molecular weight of 200 to 350 and said component (B) being 30 to 1% by weight of at least one synthetic oil containing oxygen selected from the group consisting of an ester, a polyalkylene glycol, an alkyl ether of the polyalkylene glycol, a modified compound of polyglycol, a ketone, a polyphenyl ether, a silicone, a polysiloxane and a perfluoro ether.

Inventors: Takigawa; Katsuya (Yokohama, JP), Sasaki; Umekichi (Yokohama, JP), Suda; Satoshi (Yokohama, JP)

Assignee: Nippon Mitsubishi Oil Corporation

International Classification: C10M 169/00 (20060101); C10M 171/00 (20060101); C10M 169/04 (20060101); C09K 005/00 ()

Expiration Date: 06/26/2018