Multiphase composite lubricant
US-2024093112-A1 · Mar 21, 2024 · US
Lubricant composition
US10633608B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10633608-B2 |
| Application number | US-201815995244-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 1, 2018 |
| Priority date | Dec 4, 2015 |
| Publication date | Apr 28, 2020 |
| Grant date | Apr 28, 2020 |
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Abstract
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A lubricant composition includes a perfluoropolyether as a base oil, a fluororesin as a thickener, and a polyol ester, a urea grease and a zinc dialkyldithiophosphate as additives, wherein a mass ratio of content of the perfluoropolyether to total content of the polyol ester and the urea grease ranges from 78/22 to 95/5, a mass ratio of content of the perfluoropolyether to content of the polyol ester ranges from 90/10 to 96.5/3.5, a mass ratio of content of the polyol ester to content of the urea grease ranges from 40/60 to 65/35, content of the fluororesin ranges from 15 mass % to 24 mass % based on a total amount of the lubricant composition, and content of the zinc dialkyldithiophosphate ranges from 0.5 mass % to 4 mass % based on the total amount of the lubricant composition.
First claim
Opening claim text (preview).
What is claimed is: 1. A lubricant composition comprising: a perfluoropolyether as a base oil; a fluororesin as a thickener; and a polyol ester, a urea grease and a zinc dialkyldithiophosphate as additives the urea grease comprising an ester oil and a urea compound, wherein a mass ratio of content of the perfluoropolyether to total content of the polyol ester and the urea grease ranges from 82.8:17.2 to 93.2:6.8; a mass ratio of content of the perfluoropolyether to content of the polyol ester ranges from 90/10 to 96.5/3.5, a mass ratio of content of the polyol ester to content of the urea grease ranges from 40/60 to 65/35, content of the fluororesin ranges from 15 mass % to 24 mass % based on a total amount of the lubricant composition, and content of the zinc dialkyldithiophosphate ranges from 0.5 mass % to 4 mass % based on the total amount of the lubricant composition. 2. The lubricant composition according to claim 1 , wherein the fluororesin is polytetrafluoroethylene. 3. The lubricant composition according to claim 1 , wherein the lubricant composition is used for a bearing of an automobile accessory. 4. The lubricant composition according to claim 2 , wherein the lubricant composition is used for a bearing of an automobile accessory. 5. The lubricant composition according to claim 3 , wherein the automobile accessory is an exhaust gas recirculation system, an electronic throttle control, an electric variable timing mechanism, or a variable nozzle turbo. 6. The lubricant composition according to claim 4 , wherein the automobile accessory is an exhaust gas recirculation system, an electronic throttle control, an electric variable timing mechanism, or a variable nozzle turbo. 7. The lubricant composition according to claim 1 , wherein the ester oil is a diester or an aromatic ester. 8. The lubricant composition according to claim 1 , wherein the ester oil is different from the polyol ester.
Assignees
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Classifications
used as thickening agents · CPC title
of polyhydroxy compounds · CPC title
Metal containing thio derivatives · CPC title
Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure · CPC title
Viscosity; Viscosity index · CPC title
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Frequently asked questions
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- What does patent US10633608B2 cover?
- A lubricant composition includes a perfluoropolyether as a base oil, a fluororesin as a thickener, and a polyol ester, a urea grease and a zinc dialkyldithiophosphate as additives, wherein a mass ratio of content of the perfluoropolyether to total content of the polyol ester and the urea grease ranges from 78/22 to 95/5, a mass ratio of content of the perfluoropolyether to content of the polyol…
- Who is the assignee on this patent?
- Nok Klueber Co Ltd, Nsk Ltd
- What technology area does this patent fall under?
- Primary CPC classification C10M107/38. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 28 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).