Refrigeration apparatus
US-2015300698-A1 · Oct 22, 2015 · US
Refrigerating machine oil, and working fluid composition for refrigerating machines
US10626344B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10626344-B2 |
| Application number | US-201815918689-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 12, 2018 |
| Priority date | Feb 26, 2013 |
| Publication date | Apr 21, 2020 |
| Grant date | Apr 21, 2020 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The present invention provides a refrigerating machine oil comprising a base oil; a sulfide compound; and an orthophosphoric acid ester, wherein a content of the sulfide compound is 0.01 to 2.0% by mass and a content of the orthophosphoric acid ester is 0.1 to 5.0% by mass, based on a total amount of the refrigerating machine oil, and the refrigerating machine oil having a kinematic viscosity at 40° C. of 3 to 500 mm2/s.
First claim
Opening claim text (preview).
The invention claimed is: 1. A refrigerating machine oil comprising: a base oil comprising a polyol ester obtainable by synthesis from a polyhydric alcohol comprising pentaerythritol and a fatty acid comprising isobutanoic acid and 3,5,5-trimethylhexanoic acid; a sulfide compound comprising at least one selected from the group consisting of diphenyl sulfide, dibenzyl sulfide, didecyl sulfide, didodecyl sulfide and thiobisphenol compounds; and an orthophosphoric acid ester comprising at least one selected from the group consisting of triphenyl phosphate, tricresyl phosphate, and an alkylphenyl phosphate having a C3-C4 alkyl group, wherein a content of the sulfide compound is 0.1 to 0.5% by mass and a content of the orthophosphoric acid ester is 0.2 to 2.0% by mass, based on a total amount of the refrigerating machine oil, and the refrigerating machine oil having a kinematic viscosity at 40° C. of 5 to 150 mm 2 /s. 2. A working fluid composition for a refrigerating machine comprising: a refrigerant; and the refrigerating machine oil according to claim 1 . 3. The working fluid composition according to claim 2 , wherein the refrigerant comprises at least one selected from the group consisting of difluoromethane, HFO-1234yf and R600a. 4. The working fluid composition according to claim 2 , wherein the refrigerant has a global warming potential of 700 or less. 5. The working fluid composition according to claim 4 , wherein the refrigerant comprises difluoromethane. 6. The working fluid composition according to claim 4 , wherein the refrigerant comprises HFO-1234yf. 7. The working fluid composition according to claim 4 , wherein the refrigerant comprises R600a.
Assignees
Inventors
Classifications
Containing Hydrofluorocarbons · CPC title
Viscosity; Viscosity index · CPC title
Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure · CPC title
Containing Hydrocarbons · CPC title
Pour-point; Viscosity index · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10626344B2 cover?
- The present invention provides a refrigerating machine oil comprising a base oil; a sulfide compound; and an orthophosphoric acid ester, wherein a content of the sulfide compound is 0.01 to 2.0% by mass and a content of the orthophosphoric acid ester is 0.1 to 5.0% by mass, based on a total amount of the refrigerating machine oil, and the refrigerating machine oil having a kinematic viscosity a…
- Who is the assignee on this patent?
- Jxtg Nippon Oil & Energy Corp
- What technology area does this patent fall under?
- Primary CPC classification C10M169/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 21 2020 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).