Composition for heat cycle system, and heat cycle system
US-2016333241-A1 · Nov 17, 2016 · US
Refrigerator oil
US11453839B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11453839-B2 |
| Application number | US-201917270179-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 27, 2019 |
| Priority date | Aug 28, 2018 |
| Publication date | Sep 27, 2022 |
| Grant date | Sep 27, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
The invention claimed is: 1. 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. 2. The refrigerating machine oil according to claim 1 , further comprising at least one selected from the group consisting of an antioxidant, a phosphorus-based antiwear agent other than the dialkyl hydrogen phosphite, an acid scavenger other than the epoxy compound, an extreme pressure agent, an oiliness agent, a defoaming agent, a metal deactivator, an antiwear agent other than the phosphorus-based antiwear agent, a viscosity index improver, a pour point depressant, and a detergent-dispersant. 3. 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. 4. The working fluid composition for a refrigerating machine according to claim 3 , wherein the refrigerating machine oil further comprises at least one selected from the group consisting of an antioxidant, a phosphorus-based antiwear agent other than the dialkyl hydrogen phosphite, an acid scavenger other than the epoxy compound, an extreme pressure agent, an oiliness agent, a defoaming agent, a metal deactivator, an antiwear agent other than the phosphorus-based antiwear agent, a viscosity index improver, a pour point depressant, and a detergent-dispersant. 5. The working fluid composition for a refrigerating machine according to claim 3 , wherein the refrigerant comprises a saturated hydrofluorocarbon refrigerant. 6. The working fluid composition for a refrigerating machine according to claim 3 , wherein the refrigerant comprises difluoromethane.
Assignees
Inventors
Classifications
Containing Hydrofluorocarbons · CPC title
having at least two phenol groups but no condensed ring · CPC title
Phosphate esters · CPC title
Phosphite · CPC title
- C10M129/18Primary
Epoxides · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11453839B2 cover?
- 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.
- Who is the assignee on this patent?
- Eneos Corp
- What technology area does this patent fall under?
- Primary CPC classification C10M129/18. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 27 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).