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US 12,577,448 B2Granted
Refrigerator oil composition and mixed composition for refrigerator
AssigneeIdemitsu Kosan Co., Ltd.
InventorTomoya Matsumoto
Life of this patent
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Abstract
A refrigerator oil composition used in a refrigerant containing one or more unsaturated fluorinated hydrocarbon compounds selected from compounds represented by the following general formula (1): CxFyHz (1), wherein x is an integer of 2 to 6, y is an integer of 1 to 11, z is an integer of 1 to 11, and there are one or more carbon-carbon unsaturated bonds in the molecule, the refrigerator oil composition containing a base oil (A) that includes polyvinyl ether, a modified silicone compound (B), and a specific epoxy compound (C).
Claims11
A mixed composition for a refrigerator, comprising:
- a refrigerant comprising an unsaturated fluorinated hydrocarbon compound, and
- a refrigerator oil composition, comprising
- a base oil (A) that includes polyvinyl ether;
- a modified silicone compound (B);
- and
- an epoxy compound (C):
- which has at least one ester group and has at least one divalent group represented by the following formula (2),
- wherein the polyvinyl ether is a polymer (A-2) having one or more types of constitutional units represented by the following general formula (A-2),
- where R1a, R2a, and R3a each independently represent a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, R4a represents a divalent hydrocarbon group having 2 to 10 carbon atoms, R5a represents a hydrocarbon group having 1 to 10 carbon atoms, r is a number of repeating units of OR4a and is 0 to 10, and when a plurality of OR4a's exists in the constitutional unit represented by the general formula (A-2), the plurality of OR4a's may be the same as or different from each other,
- a content of the base oil (A) is 85.0% by mass to 99.0% by mass, based on a total amount of the refrigerator oil composition,
- the modified silicone compound (B) contains a side chain modified silicone (B1) in which at least a side chain of a polysiloxane skeleton is modified,
- the side chain modified silicone (B1) includes at least one selected from the group consisting of a side chain modified silicone (B1a) having one or more epoxy groups in the side chain and a side chain modified silicone (B2a) having one or more polyether groups in the side chain,
- a content of the modified silicone compound (B) is 0.10% to 3.0% by mass, based on a total amount of the refrigerator oil composition,
- the epoxy compound (C) is one or more selected from the group consisting of an epoxidized fatty acid ester (C1) and an epoxidized vegetable oil (C2), and
- a content of the epoxy compound (C) is 0.05% to 3.0% by mass, based on the total amount of the refrigerator oil composition.
12 more elements
A method for producing a mixed composition for a refrigerator comprising a refrigerator oil composition and a refrigerant, the method comprising:
- mixing a base oil (A) that includes polyvinyl ether, a modified silicone compound (B), a refrigerant comprising an unsaturated fluorinated hydrocarbon compound, and an epoxy compound (C)
- which has at least one ester group and has at least one divalent group represented by the following formula (2),
- wherein the polyvinyl ether is a polymer (A-2) having one or more types of constitutional units represented by the following general formula (A-2),
- where R1a, R2a, and R3a each independently represent a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, R4a represents a divalent hydrocarbon group having 2 to 10 carbon atoms, R5a represents a hydrocarbon group having 1 to 10 carbon atoms, r is a number of repeating units of OR4a and is 0 to 10, and when a plurality of OR4a's exists in the constitutional unit represented by the general formula (A-2), the plurality of OR4a's may be the same as or different from each other,
- a content of the base oil (A) is 85.0% by mass to 99.0% by mass, based on a total amount of the refrigerator oil composition,
- the modified silicone compound (B) contains a side chain modified silicone (B1) in which at least a side chain of a polysiloxane skeleton is modified,
- the side chain modified silicone (B1) includes at least one selected from the group consisting of a side chain modified silicone (B1a) having one or more epoxy groups in the side chain and a side chain modified silicone (B2a) having one or more polyether groups in the side chain,
- a content of the modified silicone compound (B) is 0.10% to 3.0% by mass based on the total amount of the refrigerator oil composition,
- the epoxy compound (C) is one or more selected from the group consisting of an epoxidized fatty acid ester (C1) and an epoxidized vegetable oil (C2), and
- a content of the epoxy compound (C) is 0.05% to 3.0% by mass, based on the total amount of the refrigerator oil composition.
7 more elements
Dependencies are inferred from the claim text.