Lubricant composition based on metal nanoparticles
US-2017073612-A1 · Mar 16, 2017 · US
Additive for lubricants
US12415965B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12415965-B2 |
| Application number | US-202218719339-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 14, 2022 |
| Priority date | Dec 14, 2021 |
| Publication date | Sep 16, 2025 |
| Grant date | Sep 16, 2025 |
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Abstract
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An additive for lubricants containing, a ZrO 2 particle coated with a silane coupling agent, and a dispersion medium for the ZrO 2 particle, wherein a BET specific surface area of the ZrO 2 particle coated with the silane coupling agent obtained by removing the dispersion medium is 40% or more of a BET specific surface area of the ZrO 2 particle before coating with the silane coupling agent.
First claim
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The invention claimed is: 1. An additive for lubricants comprising, a ZrO 2 particle coated with a silane coupling agent, and a dispersion medium for the ZrO 2 particle, wherein a BET specific surface area of the ZrO 2 particle coated with the silane coupling agent obtained by removing the dispersion medium is 40% or more of a BET specific surface area of the ZrO 2 particle before coating with the silane coupling agent. 2. The additive for lubricants according to claim 1 , comprising the ZrO 2 particle coated with the silane coupling agent in an amount of 1 mass % or more and 80 mass % or less. 3. A lubricant composition comprising, the additive for lubricants according to claim 1 . 4. A method for producing an additive for lubricants containing a ZrO 2 particle coated with a silane coupling agent, comprising: mixing a ZrO 2 particle with a dispersion medium for the ZrO 2 particle; and reacting the ZrO 2 particle with a silane coupling agent in the obtained mixture until a BET specific surface area of the ZrO 2 particle coated with the silane coupling agent obtained by removing the dispersion medium from the mixture after the reaction of the ZrO 2 particle with the silane coupling agent reaches 40% or more of a BET specific surface area of the ZrO 2 particle before coating with the silane coupling agent. 5. The method for producing an additive for lubricants according to claim 4 , wherein the mixture comprises a catalyst. 6. The method for producing an additive for lubricants according to claim 4 , wherein a reaction temperature of the ZrO 2 particle and the silane coupling agent is 10° C. or more and 100° C. or less. 7. The method for producing an additive for lubricants according to claim 4 , wherein the dispersion medium is removed from the mixture, and resulting powder containing the ZrO 2 particle coated with the silane coupling agent is dispersed in another dispersion medium. 8. A method for producing a lubricant composition comprising, mixing the additive for lubricants according to claim 1 with a lubricant. 9. The method for producing a lubricant composition according to claim 8 , wherein the dispersion medium contained in the additive for lubricants is removed from the mixture of the additive for lubricants and the lubricant.
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Classifications
used as base material · CPC title
inorganic compounds surface treated with organic compounds · CPC title
Mixtures of base-materials and additives · CPC title
- C09C3/12Primary
Treatment with organosilicon compounds {(C09C3/006 takes precedence)} · CPC title
Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes · CPC title
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- What does patent US12415965B2 cover?
- An additive for lubricants containing, a ZrO 2 particle coated with a silane coupling agent, and a dispersion medium for the ZrO 2 particle, wherein a BET specific surface area of the ZrO 2 particle coated with the silane coupling agent obtained by removing the dispersion medium is 40% or more of a BET specific surface area of the ZrO 2 particle before coating with the silane coupling agent.
- Who is the assignee on this patent?
- Kanto Denka Kogyo Kk
- What technology area does this patent fall under?
- Primary CPC classification C09C3/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 16 2025 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).