Fluid composition comprising HFC refrigerant and alkylbenzene-based refrigerator oil
AssigneeNippon Mitsubishi Oil Corporation
InventorsKatsuya Takigawa, Umekichi Sasaki, Satoshi Suda
Life of this patent
Estimating the term…
Abstract
A refrigerator oil for use with an HFC refrigerant containing HFC-134a and/or HFC-125, which comprises an alkylbenzene oil containing at least 60% by weight of alkylbenzenes having a molecular weight of 200 to 350. An oil composition for use in a refrigerator, which comprises the refrigerator oil mentioned above and an HFC refrigerant containing HFC-134a and/or HFC-125, together with or without an additive such as a phosphoric ester compound.
Claims19
A fluid composition for use in a refrigerating machine which comprises:
- (I) an HFC refrigerant containing at least one of HFC-134a and HFC-125;
- and
- (II) 1 to 500 parts by weight of a refrigerating machine oil comprising an alkylbenzene oil containing at least 60% by weight of alkylbenzenes having a molecular weight of 200 to 350 and having kinematic viscosity of from 3 to less than 72.6 mm2/s at a temperature of 40° C. per 100 pats by weight of the HFC refrigerant as a base oil and 0.005 to 5.0% by weight, based on the total amount of the oil composition, of at least one kind of phosphorus compound selected from the group consisting of phosphoric esters, acid phosphoric esters, amine salts of acid phosphoric esters, chlorinated phosphoric esters and phosphorous esters.
A fluid composition for use in a refrigeration machine comprising:
- an HFC refrigerant;
- and
- a refrigerating machine oil, said refrigerating machine oil comprising an alkylbenzene oil containing at least 60% by weight of alkylbenzenes having a molecular weight of 200 to 350.
A fluid composition for use in an refrigerating machine which comprises:
- (I) an HFC refrigerant containing at last one of HFC-134a and HFC-125;
- and
- (II) 1 to 500 parts by weight of a refrigerating machine oil comprising an alklylbenzene oil containing at least 60% by weight of alkylbenzenes having a molecular weight of 200 to 350 and having a kinematic viscosity of from 3 to less than 72.6 mm2/s at a temperature of 40° C. per 100 parts by weight of the HFC refrigerant.
Dependencies are inferred from the claim text.