Grease composition, and lubrication method and device for sliding mechanism, using said grease composition
US-2022145203-A1 · May 12, 2022 · US
Grease composition and production method of grease composition
US12344810B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12344810-B2 |
| Application number | US-202218579569-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 29, 2022 |
| Priority date | Jul 21, 2021 |
| Publication date | Jul 1, 2025 |
| Grant date | Jul 1, 2025 |
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Abstract
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A grease composition includes a base oil and a thickener. The thickener contains a urea compound and a styrene-based polymer. A content of the styrene-based polymer is 2% by mass or more and 30% by mass or less as to a total amount of the urea compound and the styrene-based polymer. In the thickener, an average value of diameter of particles with a diameter of 0.2 μm or more is 0.2 μm or more and 1.0 μm or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of producing a grease composition, comprising: providing a styrene-based polymer, an amine compound, an isocyanate compound, a lubricating oil, a first solvent that does not dissolve a urea compound that is generated, and a second solvent that does not dissolve the urea compound that is generated; wherein a content of the styrene-based polymer is 2% by mass or more and 30% by mass or less relative to a total amount of the urea compound and the styrene-based polymer; dissolving or dispersing the amine compound in the first solvent, dissolving or dispersing the isocyanate compound in the second solvent, dissolving or dispersing the styrene-based polymer in one or both of the first solvent and the second solvent, such that a first blended solution containing at least the amine compound and a second blended solution containing at least the isocyanate compound are prepared; blending the first blended solution and the second blended solution, and carrying out reaction of the amine compound and the isocyanate compound, such that a third blended solution containing the styrene-based polymer and the urea compound is generated; and adding the lubricating oil after removing the first solvent and the second solvent from the third blended solution.
Assignees
Inventors
Classifications
- C10M169/06Primary
Mixtures of thickeners and additives · CPC title
Specific manufacturing methods for lubricant compositions · CPC title
semi-solid; greasy · CPC title
Particles of special shape or size · CPC title
used as thickening material · CPC title
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Frequently asked questions
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- What does patent US12344810B2 cover?
- A grease composition includes a base oil and a thickener. The thickener contains a urea compound and a styrene-based polymer. A content of the styrene-based polymer is 2% by mass or more and 30% by mass or less as to a total amount of the urea compound and the styrene-based polymer. In the thickener, an average value of diameter of particles with a diameter of 0.2 μm or more is 0.2 μm or more a…
- Who is the assignee on this patent?
- Jtekt Corp
- What technology area does this patent fall under?
- Primary CPC classification C10M169/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 01 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).