Grease composition and rolling bearing
US-2020109344-A1 · Apr 9, 2020 · US
Grease composition, and rolling bearing
US12037561B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12037561-B2 |
| Application number | US-202118020743-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 10, 2021 |
| Priority date | Aug 12, 2020 |
| Publication date | Jul 16, 2024 |
| Grant date | Jul 16, 2024 |
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Abstract
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A grease composition including: a base oil; a thickener; a zinc sulfonate; a polysulfide; an overbased calcium sulfonate; and triphenyl phosphite, in which a proportion of the zinc sulfonate with respect to a total mass of the base oil and the thickener is 0.030 mass % to 0.045 mass % in terms of a zinc content, a proportion of the polysulfide with respect to the total mass of the base oil and the thickener is 0.16 mass % to 0.24 mass % in terms of a sulfur content, a proportion of the overbased calcium sulfonate with respect to the total mass of the base oil and the thickener is 0.010 mass % to 0.015 mass % in terms of a calcium content, and a proportion of the triphenyl phosphite with respect to the total mass of the base oil and the thickener is 0.24 mass % to 0.36 mass %.
First claim
Opening claim text (preview).
The invention claimed is: 1. A grease composition comprising: a base oil; a thickener; a zinc sulfonate; a polysulfide; an overbased calcium sulfonate; and triphenyl phosphite, wherein a proportion of the zinc sulfonate with respect to a total mass of the base oil and the thickener is 0.030 mass % to 0.045 mass % in terms of a zinc content, a proportion of the polysulfide with respect to the total mass of the base oil and the thickener is 0.16 mass % to 0.24 mass % in terms of a sulfur content, a proportion of the overbased calcium sulfonate with respect to the total mass of the base oil and the thickener is 0.010 mass % to 0.015 mass % in terms of a calcium content, and a proportion of the triphenyl phosphite with respect to the total mass of the base oil and the thickener is 0.24 mass % to 0.36 mass %. 2. The grease composition according to claim 1 , wherein the base oil is an alkyl diphenyl ether, the thickener is an alicyclic diurea, and a proportion of the thickener with respect to the total mass of the base oil and the thickener is 10 mass % to 14 mass %. 3. A rolling bearing in which the grease composition according to claim 1 is enclosed. 4. A rolling bearing in which the grease composition according to claim 2 is enclosed. 5. The grease composition according to claim 1 , wherein a proportion of the thickener with respect to the total mass of the base oil and the thickener is 10 mass % to 12 mass %.
Assignees
Inventors
Classifications
semi-solid; greasy · CPC title
Bearings · CPC title
Phosphite · CPC title
Thiols; Sulfides; Polysulfides; Mercaptals · CPC title
Overbased sulfonic acid salts · CPC title
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- What does patent US12037561B2 cover?
- A grease composition including: a base oil; a thickener; a zinc sulfonate; a polysulfide; an overbased calcium sulfonate; and triphenyl phosphite, in which a proportion of the zinc sulfonate with respect to a total mass of the base oil and the thickener is 0.030 mass % to 0.045 mass % in terms of a zinc content, a proportion of the polysulfide with respect to the total mass of the base oil and …
- Who is the assignee on this patent?
- Jtekt Corp, Eneos Corp
- What technology area does this patent fall under?
- Primary CPC classification C10M169/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 16 2024 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).