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Dispersant suitable for lubricant formulations

A dispersant and reaction product technology, applied in lubricating compositions, additives, petroleum industry, etc., can solve problems such as smoke-induced wear, pollutants deposited on metal surfaces, and lubricant viscosity increase

Inactive Publication Date: 2016-11-09
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soot particles can lead to increased lubricant viscosity, deposition of contaminants on metal surfaces, and soot-induced wear

Method used

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  • Dispersant suitable for lubricant formulations
  • Dispersant suitable for lubricant formulations
  • Dispersant suitable for lubricant formulations

Examples

Experimental program
Comparison scheme
Effect test

example

[0038] Synthetic Glycidyl Ether

[0039] Glycidyl Ether of Polypropylene Glycol Methyl Ether ("GE1")

[0040] A 1000 mL round bottom flask using overhead stirring was charged with 407.8 g of 1000 g / mol polypropylene glycol methyl ether (from Aldrich with a number average molecular weight of 1130 g / mol and a Mw of 1170 g / mol) and 0.6 g of trifluoro Boron compound diethyl ether. The solution was warmed to 70°C and the dropwise addition of 41.10 g (1.1 molar equivalents) of epichlorohydrin was started. The maximum temperature reached during the reaction was 75°C. Stir overnight at 70° C., then dilute the black solution with 53.2 mL of 50% by weight aqueous sodium hydroxide. The organic phase turned brown. Heat at 70°C overnight, then cool to ambient temperature (approximately 23-25°C). The lower aqueous phase was removed. The organic phase was washed with 62.5 g of water containing 17.8 g of sodium chloride. The solution was treated with 5 g of magnesium sulfate, filtered ...

example 1

[0046] Example 1 - GE1 product using aminoethylpiperazine (AEP)

[0047] A 500 mL round bottom flask using magnetic stirring and a water cooled condenser was charged with 37.55 g of GE1, 65.3 g of methanol and 1.4 g of N-aminoethylpiperazine, or "aminoethylpiperazine"). The solution was heated to reflux overnight, then cooled and evaporated on a rotary evaporator to give 38.76 g of a residue. The Mn of the residue was 1340 g / mol and the Mw was 2400 g / mol.

example 2

[0048] Example 2 - GE1 product (BPEA) using bis(2-(piperazin-1-yl)ethyl)amine

[0049] A 250 mL round bottom flask using magnetic stirring and a water cooled condenser was charged with 43.7 g GE1, 43 g methanol and 3.2 g BPEA. The solution was heated to reflux overnight, then cooled and evaporated on a rotary evaporator to give 46.9 g of a residue. The Mn of the residue was 1860 g / mol and the Mw was 3990 g / mol.

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Abstract

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 dispersiblity of the lubricant.

Description

technical field [0001] The present invention relates to a dispersant which is the reaction product of an amine and a glycidyl ether. Background technique [0002] Modern lubricants are used in a variety of applications. Lubricants can serve a variety of functions, including controlling friction between the surfaces of moving parts, reducing wear on moving parts, reducing corrosion on surfaces of moving parts, especially metal surfaces, damping mechanical shocks in gears, and in engine cylinders A sealing portion is formed on the wall. Lubricant compositions contain a base oil and typically one or more additives or modifiers that provide other performance characteristics to the lubricant composition. [0003] Soot or sludge formation is a widespread problem encountered with many lubricants, in particular lubricants suitable for fuel burning internal combustion engines (eg automobile engines, rail engines, power plant diesel engines, etc.). Soot is formed from incomplete co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M133/40C10M133/08C10M133/10C10M133/14C10N30/04
CPCC10M133/08C10M133/10C10M133/14C10M133/40C10M2215/042C10M2215/044C10M2215/221C10N2020/04C10N2030/04C10N2040/25
Inventor C·皮埃尔E·D·道格斯P·R·艾洛维
Owner DOW GLOBAL TECH LLC
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