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A polymer friction modifier with polar ends

A friction modifier, polymer technology, applied in the directions of additives, petroleum industry, lubricating compositions, etc., can solve problems such as no reports on polymer friction modifiers, prevent direct contact, achieve non-wear friction, excellent The effect of anti-wear properties

Active Publication Date: 2017-10-17
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] After searching, there is no relevant report on polymer friction modifiers with polar ends

Method used

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  • A polymer friction modifier with polar ends
  • A polymer friction modifier with polar ends
  • A polymer friction modifier with polar ends

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The first step is to prepare styrene-isoprene copolymer: add 0.5mol styrene, 0.5mol isoprene, 0.05mol α-bromoisobutyrate, 40ml toluene to a flask equipped with a thermometer , 0.05mol cuprous bromide CuBr, 0.015mol pentamethyldiethylenetriamine PMDETA, vacuum the system with nitrogen, and stir the reaction at 60-65°C for 8h. After the reaction, the polymer is passed through an alumina chromatography column to remove the catalyst in the polymer. Then use methanol as a precipitating agent to precipitate the polymer and dry it in vacuum. The structure of the resulting styrene-isoprene copolymer is as follows:

[0025]

[0026] The second step is to prepare the hydroxyl-terminated styrene-isoprene copolymer: dissolve the styrene-isoprene copolymer synthesized in step 1 in dimethyl sulfoxide DMSO, and add 30 times the equivalent of triethylamine and 20 times the equivalent of ethanolamine, nitrogen, and stirred at room temperature for 48 hours; after the reaction, methan...

Embodiment 2

[0031] Carry out the preparation of the polymer friction modifier with polar pyridyl two ends: operate according to the 3rd step in the embodiment 1, the difference is to use the corresponding amount of isonicotinic acid instead of 2-imidazolinone-4-carboxylic acid, the obtained has The structure of the polymer friction modifier at both ends of the polar pyridyl group is as follows:

[0032]

Embodiment 3

[0034] Carry out the preparation of the polymer friction modifier with polar thiazole group two ends: according to the 3rd step operation in the embodiment 1, the difference is to use the corresponding amount of benzothiazole-6-carboxylic acid to replace 2-imidazolinone-4- Carboxylic acid, the resulting polymer friction modifier with polar thiazolyl ends has the following structure:

[0035]

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Abstract

The present invention relates to a macromolecule friction modifier with two polar ends. A friction modifier molecule is a straight-chain macromolecule, in a structure shown in formula (I) or formula (II), wherein R1 is phenyl or cyclohexyl, R2 is methyl or a hydrogen atom, m is an integer ranging from 0 to 100, n is an integer ranging from 0 to 100, and P1 and P2 are independently existing polar groups containing nitrogen, oxygen, sulfur, phosphorus, fluorine, boron or chlorine heteroatoms. Compared with a traditional friction modifier molecule with a polar group in one end and a non-polar hydrocarbon in the other end, two functionalized polar groups of a long chain thereof coordinate with metal of surfaces of a friction pair respectively, and meanwhile the long chain makes two metal surfaces of the friction pair completely separated, preventing direct contact of two friction surfaces, implementing non-wear friction, and providing excellent anti-wear performance for lubricating oil.

Description

technical field [0001] The invention relates to a lubricating oil additive, in particular to a polymer friction modifier with two polar ends. Background technique [0002] Typically, an organic friction modifier is a surfactant with a polar group at one end of the molecule and a nonpolar hydrocarbon group at the other end. The friction modifier can form a directional adsorption film on the friction surface, thereby improving the lubrication condition of the friction pair, effectively reducing the friction and wear of the machine, reducing energy consumption and improving fuel economy. The polar group of the friction modifier determines the bonding strength between the friction modifier and the surface, and it is generally a compound containing heteroatoms such as nitrogen, oxygen, sulfur, phosphorus, and boron. [0003] Chinese patent CN102725385A and US patent US20120283158A1 disclose a friction modifier containing one or more amide functional groups: [0004] [0005]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M149/02C10M153/02C10M151/02C08F212/08C08F236/10C08F8/32C08F8/30C08F8/34C08F8/40C10N30/06
CPCC08F236/10C10M143/12C10M177/00C10M2205/06C10N2030/06C10N2060/00C10M2205/04
Inventor 李韶辉汤正林黄东升赵治宇官婷婷崔海涛狄泽超
Owner PETROCHINA CO LTD