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Lubricating composition containing metal carboxylate
US9309478B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9309478-B2 |
| Application number | US-200913122422-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 21, 2009 |
| Priority date | Oct 23, 2008 |
| Publication date | Apr 12, 2016 |
| Grant date | Apr 12, 2016 |
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- Title
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Abstract
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The invention relates to a lubricating composition comprising (a) at least 0.05 wt % of a non-aromatic metal carboxylate, wherein the metal carboxylate is derived from a branched carboxylic acid, and (b) an oil of lubricating viscosity. The invention further provides for the use of the lubricating composition for lubricating a limited slip differential.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of lubricating a limited slip differential comprising supplying to the limited slip differential a lubricating composition comprising: (a) about 2.3 wt % to about 2.5 wt % of zinc 2-ethylhexanoate, (b) a sulphur-containing compound, wherein the sulphur-containing compound comprises a dimercaptothiadiazole or derivative, or mixtures thereof, and (c) an oil of lubricating viscosity, wherein the lubricating composition has a sulphur content in the range of 0.3 wt % to 5 wt %. 2. The method of claim 1 , wherein the sulphur-containing compound further comprises a polysulphide, or a sulphurised olefin. 3. The method of claim 1 further comprising a phosphorus-containing compound. 4. The method of claim 3 , wherein the phosphorus containing compound is an amine salt of a phosphoric acid ester. 5. The method of claim 4 , wherein the amine salt of a phosphoric acid ester is a sulphur-free phosphorus-containing compound of an amine salt of either (i) a hydroxy-substituted di-ester of phosphoric acid, or (ii) a phosphorylated hydroxy-substituted di- or tri-ester of phosphoric acid. 6. The method of claim 1 further comprising a boron-containing compound. 7. The method of claim 6 , wherein the boron-containing compound is a borated dispersant, a borate ester or a borated phospholipid.
Assignees
Inventors
Classifications
Branched chain compounds · CPC title
polycarboxylic · CPC title
Thiadiazoles · CPC title
Ammonium or amine salts thereof · CPC title
- C10M129/32Primary
monocarboxylic · CPC title
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Frequently asked questions
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- What does patent US9309478B2 cover?
- The invention relates to a lubricating composition comprising (a) at least 0.05 wt % of a non-aromatic metal carboxylate, wherein the metal carboxylate is derived from a branched carboxylic acid, and (b) an oil of lubricating viscosity. The invention further provides for the use of the lubricating composition for lubricating a limited slip differential.
- Who is the assignee on this patent?
- Bartley Stuart L, Baker Mark R, Lubrizol Corp
- What technology area does this patent fall under?
- Primary CPC classification C10M129/32. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 12 2016 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).