Back to results
US 11,453,839 B2Granted
Refrigerator oil
AssigneeEneos Corporation
InventorsYohei Shono, Tatsuki Nakajima, Shogo Hashimoto, Hidetoshi Ogata
Life of this patent
Estimating the term…
Abstract
The present invention provides a refrigerating machine oil containing a lubricating base oil, a dialkyl hydrogen phosphite having two alkyl groups having 1 to 12 carbon atoms in the molecule, and an epoxy compound.
Claims6
A refrigerating machine oil comprising:
- a lubricating base oil;
- a dialkyl hydrogen phosphite having two alkyl groups having 8 to 12 carbon atoms in the molecule;
- and
- an epoxy compound;
- wherein
- the lubricating base oil comprises at least one selected from the group consisting of a polyol ester and a complex ester,
- the dialkyl hydrogen phosphite is at least one selected from the group consisting of a compound represented by the following Formula (b-1) and a compound represented by the following Formula (b-2):
- wherein Ak represents an alkyl group having 8 to 12 carbon atoms,
- the epoxy compound comprises at least one selected from the group consisting of a glycidyl ether-type epoxy compound, a glycidyl ester-type epoxy compound, an oxirane compound, an alkyloxirane compound, an alicyclic epoxy compound, an epoxidized fatty acid monoester, and an epoxidized vegetable oil, and
- a content of the lubricating base oil is 90% by mass or more, a content of the dialkyl hydrogen phosphite is 0.07% by mass or more and 0.5% by mass or less, and a content of the epoxy compound is 0.1 to 4% by mass, based on the total amount of the refrigerating machine oil.
7 more elements
A working fluid composition for a refrigerating machine comprising:
- a refrigerating machine oil;
- and
- a refrigerant,
- wherein the refrigerating machine oil comprises:
- a lubricating base oil;
- a dialkyl hydrogen phosphite having two alkyl groups having 8 to 12 carbon atoms in the molecule;
- and
- an epoxy compound;
- wherein
- the lubricating base oil comprises at least one selected from the group consisting of a polyol ester and a complex ester,
- the dialkyl hydrogen phosphite is at least one selected from the group consisting of a compound represented by the following Formula (b-1) and a compound represented by the following Formula (b-2):
- wherein Ak represents an alkyl group having 8 to 12 carbon atoms,
- the epoxy compound comprises at least one selected from the group consisting of a glycidyl ether-type epoxy compound, a glycidyl ester-type epoxy compound, an oxirane compound, an alkyloxirane compound, an alicyclic epoxy compound, an epoxidized fatty acid monoester, and an epoxidized vegetable oil, and
- a content of the lubricating base oil is 90% by mass or more, a content of the dialkyl hydrogen phosphite is 0.07% by mass or more and 0.5% by mass or less, and a content of the epoxy compound is 0.1 to 4% by mass, based on the total amount of the refrigerating machine oil.
11 more elements
Dependencies are inferred from the claim text.