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Lubricating oil additives

A lubricating oil composition, oil-soluble technology, applied in the directions of additives, lubricating parts, lubricating compositions, etc., can solve problems such as high thickening efficiency

Active Publication Date: 2019-06-04
INFINEUM INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in applications requiring ultra-low viscosity lubricating fluids like 0W-8, 0W-16, 0W-20, the problem with such additives is their high thickening efficiency

Method used

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  • Lubricating oil additives
  • Lubricating oil additives
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Experimental program
Comparison scheme
Effect test

Embodiment

[0129] The invention is now described particularly in the following non-limiting examples.

[0130] Synthesis of polymers P1, P2 and P3

[0131] 2-Heptadecyl-2-oxazine (monomer) (n eq. see table below) and propargyl toluenesulfonate (propOTs) initiator (1.00 eq.) were heated at 100°C for 1 hour and heated at 120 Heat at °C for 1 h and at 140 °C with stirring until NMR shows quantitative conversion of starting material (up to 2 h). The colorless solid was used without further purification as obtained.

[0132] Synthesis of polymers P4, P5 and P6

[0133] Repeat the procedure for polymers P1, P2 and P3 but with 2-oleic acid-2-oxazine (P4), 2-fatty acid-2-oxazine (P5) or 2-linoleic acid-2-oxazine (P6) (the amount of monomer is n eq. in the table below) to replace the 2-heptadecyl-2-oxazine monomer. With reference to the structure of claim 1, the group R in the polymer P4 1 With 1 double bond, the group R in polymer P5 1 has an average of 1.65 double bonds (from rapeseed fat...

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Abstract

A lubricating composition comprises at least 50 percent by mass, based on the mass of the composition of an oil of lubricating viscosity and 0.01 to 25 percent by mass, based on the mass of the composition of an oil-soluble poly(2-oxazine) polymer. The polymer has the repeat unit: -N(COR1)CH2CH2CH2-, where the number (n) of repeat units is an integer between 4 and 500, such as between 4 and 400. The polymer carries an inorganic or organic nucleophilic polymerisation terminating group (t), and an initiator group (i) connected to the N atom of a repeat unit, the initiator group (i) being effective to initiate the polymerisation of linear, branched or cyclic hydrocarbyl moieties. R1 comprises a single or a mixture of linear, branched or cyclic hydrocarbyl groups having 1-50 carbon atoms, someor all having 12-50 carbon atoms, or of at least one macro-monomeric hydrocarbyl group with more than 50 carbon atoms.

Description

field of invention [0001] The present invention relates to polymer additives for use in lubricating oil compositions (lubricants) for lubricating the crankcases of spark-ignition or compression-ignition internal combustion engines. More specifically, the additive is poly(2-oxazine) which provides friction reducing properties to lubricating oils. The additive also does not adversely affect lubricant viscosity. Background of the invention [0002] Interested in improving the fuel economy of gasoline and diesel engines. This can be achieved via the lubricant engine oil by reducing the frictional effect of the bulk fluid (by reducing the oil viscosity) or by improving the friction of contacting parts (by including friction modifier additives). [0003] There is therefore interest in additives with low friction properties in low viscosity oils. [0004] Dispersant viscosity modifier (DVM) additives are known to provide friction modification. Based on polymer technology, examp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M145/18C10M169/04F01M11/10C10N30/06C10N40/04C10N40/25
CPCC10M2203/1006C10M2203/1025C10M149/12C10N2020/04C10N2020/067C10N2030/06C10N2040/25C10N2020/02C10M169/04C10M149/22C10N2030/10C10N2030/04C08G73/0233C10M111/04C10M2203/003C10M2217/046C10N2020/073C10N2040/10
Inventor A·J·斯特朗B·卡托兹D·J·菲利普斯A·D·施瓦茨M·哈特维格R·贝克尔
Owner INFINEUM INT LTD