Solid particle, solid lubricant, and metal member
US-2015368577-A1 · Dec 24, 2015 · US
Lubricant compositions containing a functionalized dispersant
US8927469B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8927469-B2 |
| Application number | US-201213549697-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 16, 2012 |
| Priority date | Aug 11, 2011 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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Abstract
Official abstract text for this publication.
An engine lubricant composition, a method for maintaining the soot or sludge handling capability of an engine lubricant while not adversely affecting elastomeric seal material in the engine and a method of operating an engine. The engine lubricant includes a base oil and a dispersant. The dispersant is a reaction product of A) a hydrocarbyl-dicarboxylic acid or anhydride, B) a polyamine, C) a dicarboxyl-containing fused aromatic compound, and D) a non-aromatic dicarboxylic acid or anhydride.
First claim
Opening claim text (preview).
What is claimed is: 1. An engine lubricant composition comprising a base oil and a dispersant comprising a reaction product of A) a hydrocarbyl-dicarboxylic acid or anhydride having a number average molecular weight of from about 500 to about 5000, B) a polyamine, C) a dicarboxyl-containing fused aromatic compound or anhydride thereof, and D) a non-aromatic dicarboxylic acid or anhydride having a number average molecular weight of less than about 500. 2. The eng…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8927469B2 cover?
- An engine lubricant composition, a method for maintaining the soot or sludge handling capability of an engine lubricant while not adversely affecting elastomeric seal material in the engine and a method of operating an engine. The engine lubricant includes a base oil and a dispersant. The dispersant is a reaction product of A) a hydrocarbyl-dicarboxylic acid or anhydride, B) a polyamine, C) a d…
- Who is the assignee on this patent?
- Mathur Naresh, Lagona Jason A, Afton Chemical Corp
- What technology area does this patent fall under?
- Primary CPC classification C10M159/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 06 2015 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).