Patent ID: 6251300
Filing Date: 2001-06-26
Classification: C10M,C10N

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, said alkylbenzenes having a kinematic viscosity of 3 to less than 72.6 mm.sup.2 /s at a temperature of 40.degree. C., said component (B) being 30 to 1% by weight of at least one synthetic oil containing oxygen, said synthetic oil being a member selected from the group consisting of a dibasic ester, a polyol ester, a complex ester, a polyol carbonate, a polyalkylene glycol, an alkyl ether of said polyalkylene glycol, an adduct of a polyol with an alkylene oxide, an alkyl ether of said adduct of a polyol with an alkylene oxide, an ester of a polyalkylene glycol, an ester of a monoalkyl ether of a polyalkylene glycol, an ester of an adduct of said polyol with an alkylene oxide, an ester of a partial alkyl ether of said adduct of a polyol with an alkylene oxide, a ketone and a mixture thereof.