Refrigerator oil composition, method for producing same, and working fluid composition for refrigerators
AssigneeJx Nippon Oil & Energy Corporation
InventorsMasanori Saito, Takeshi Okido, Hiroshi Eto, Kuniko Adegawa
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Abstract
A refrigerating machine oil composition comprising at least one ester additive selected from tetraesters of pentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms and hexaesters of dipentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms, and a base oil that is an ester other than the ester additive, in which the content of the ester additive is 2 to 20 mass % based on the total amount of the refrigerating machine oil composition, and the kinematic viscosity of the refrigerating machine oil composition at 40° C. is 3 to 500 mm2/s.
Claims13
A refrigerating machine oil composition comprising:
- at least one ester additive selected from tetraesters of pentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms and hexaesters of dipentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms;
- and
- a base oil that is an ester other than the ester additive,
- wherein a content of the ester additive is 2 to 20 mass % based on a total amount of the refrigerating machine oil composition, and
- wherein a kinematic viscosity of the refrigerating machine oil composition at 40° C. is 3 to 500 mm2/s.
A method for producing a refrigerating machine oil composition comprising:
- a step of blending at least one ester additive selected from tetraesters of pentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms and hexaesters of dipentaerythritol and one selected from fatty acids having 5 to 18 carbon atoms into a base oil that is an ester other than the ester additive to obtain the refrigerating machine oil composition,
- wherein a content of the ester additive is 2 to 20 mass % based on a total amount of the refrigerating machine oil composition, and
- wherein a kinematic viscosity of the refrigerating machine oil composition at 40° C. is 3 to 500 mm2/s.
Dependencies are inferred from the claim text.