Epoxy resin hardener compositions and epoxy resin compositions containing such hardener compositions
US-2015105523-A1 · Apr 16, 2015 · US
Dispersant suitable for lubricant formulations
US10179885B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10179885-B2 |
| Application number | US-201515124871-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 18, 2015 |
| Priority date | Mar 27, 2014 |
| Publication date | Jan 15, 2019 |
| Grant date | Jan 15, 2019 |
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- Title
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Abstract
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A dispersant includes the reaction product of an amine and at least one equivalent of glycidyl ether where the amine is selected from a group consisting of aminoethylpiperazine, bis(2-(piperazin-1-yl)ethyl)amine, 4,4′-methylenebiscyclohexylamine, m-xylenediamine, diethylenetriamine, and triethylenetetramine and where the glycidyl ether has the structure (A), where R is selected from aromatic carbon chains, non-aromatic carbon chains and polyalkylene glycol groups. The dispersant is useful in a lubricant with a base oil for increasing soot dispersibility of the lubricant.
First claim
Opening claim text (preview).
The invention claimed is: 1. A dispersant comprising the reaction product of an amine and at least one equivalent of glycidyl ether where the amine is selected from a group consisting of aminoethylpiperazine, bis(2-(piperazin-1-yl)ethyl)amine, 4,4′-methylenebiscyclohexylamine, m-xylenediamine, diethylenetriamine, and triethylenetetramine and where the glycidyl ether has the following structure: where R is a polyalkylene glycol, the dispersant having a weight-average molecular weight of 2000 grams per mole or higher and 10,000 grams per mole or lower. 2. The dispersant of claim 1 , further characterized by the polyalkylene glycol having a number-average molecular weight of 800 grams per mole or higher. 3. The dispersant of claim 1 , where R is a poly(propylene glycol) alkyl ether. 4. The dispersant of claim 3 , where R is poly(propylene glycol) methyl ether. 5. A lubricant comprising a base oil and the dispersant of claim 1 . 6. The lubricant of claim 5 , where the base oil comprises a polyalkylene glycol and R in the glycidyl ether structure is selected from polyalkylene glycol groups. 7. A method for increasing soot dispersibility of a lubricating fluid, the method comprising adding to the lubricating fluid the dispersant of claim 1 . 8. The method of claim 7 , further characterized by the lubricating fluid comprising a polyalkylene glycol and where R in the glycidyl ether structure is selected from polyalkylene glycol groups.
Assignees
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Classifications
Six-membered rings containing nitrogen and carbon only · CPC title
having cycloaliphatic groups · CPC title
- C10M133/40Primary
Six-membered ring containing nitrogen and carbon only · CPC title
containing hydroxy groups · CPC title
containing hydroxy groups · CPC title
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- What does patent US10179885B2 cover?
- A dispersant includes the reaction product of an amine and at least one equivalent of glycidyl ether where the amine is selected from a group consisting of aminoethylpiperazine, bis(2-(piperazin-1-yl)ethyl)amine, 4,4′-methylenebiscyclohexylamine, m-xylenediamine, diethylenetriamine, and triethylenetetramine and where the glycidyl ether has the structure (A), where R is selected from aromatic ca…
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification C10M133/40. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 15 2019 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).