Preparations and applications of dialkyl dithiocarbamate hydroxy derivative and borate thereof

A technology of hydroxy derivatives and alkanes, which is applied in the field of preparation and application of dialkyldithiocarbamic acid hydroxy derivatives and borate esters, to achieve good oil solubility, low hydrolysis stability, good anti-friction performance and anti-friction properties. The effect of wear properties

Inactive Publication Date: 2013-01-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Borates prepared from dialkyldithiocarbamic acid hydroxy derivatives are used as environmentally friendly lubricating oil load additives, and there is no patent report

Method used

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  • Preparations and applications of dialkyl dithiocarbamate hydroxy derivative and borate thereof
  • Preparations and applications of dialkyl dithiocarbamate hydroxy derivative and borate thereof
  • Preparations and applications of dialkyl dithiocarbamate hydroxy derivative and borate thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 0.25 mol of di-n-butylamine and 0.25 mol of triethylamine together into the three-necked flask, and slowly add 0.275 mol of carbon disulfide dropwise under ice-water bath. After about 1 hour, the dropwise addition is completed. Continue to stir for 2 hours, and slowly rise to room temperature, the system becomes It is bright yellow translucent liquid. At room temperature, 0.275mol propylene oxide was added dropwise to the reaction system, and the dropwise addition was completed after about 1 hour. After 1 hour of heat preservation, the temperature was raised to 50° C., and stirring was continued for 2 hours. The acid-binding agent triethylamine is evaporated under reduced pressure to obtain di-n-butyldithiocarbamate hydroxy derivative (a);

[0021] Add boric acid and the above product in a molar ratio of 1:3 into a reaction bottle equipped with a water separator, and add an appropriate amount of acidic resin as a catalyst and an appropriate amount of benzene as a wa...

Embodiment 2

[0024] Add equimolar amounts of diisooctylamine and pyridine together into a three-necked flask, and slowly add an excess of 10% carbon disulfide dropwise at room temperature, and control the reaction system not to exceed 45°C by the drop rate, and the dropwise addition is completed within about 2 hours, and continue to stir After 4 hours, the system turned into a bright yellow translucent liquid. At room temperature, add propylene oxide in an equimolar amount to carbon disulfide dropwise to the reaction system. After about 1 hour, the dropwise addition is completed. After 3 hours of heat preservation, the temperature is raised to 60° C., and stirring is continued for 2 hours. The acid-binding agent pyridine is distilled off under reduced pressure to obtain diisooctyl dithiocarbamate hydroxy derivatives;

[0025] Add boric acid and the above product into a reaction bottle equipped with a water separator at a molar ratio of 1:3, and add an appropriate amount of acidic resin as ...

Embodiment 3

[0028] This example is a tribological performance test.

[0029] Get the borate (b) of di-n-butyldithiocarbamate hydroxy derivative (a) and di-n-butyldithiocarbamate hydroxy derivative that example 1 makes, take commercially available refined rapeseed oil as The anti-wear and anti-friction properties of the synthetic additives were evaluated on the base oil on a four-ball friction and wear testing machine. The test conditions were: the maximum non-seizing load PB and sintering load PD of the sample were measured according to the GB / T3142-82 standard method to evaluate the extreme pressure performance ; Under 392N load, measure the wear spot diameter (WSD) of sample according to SH / T 0189-92 standard method to evaluate antiwear performance; Under 392N load, measure sample according to ASTM D5183-95 (1999) standard method The coefficient of friction (μ) under different loads is used to evaluate the anti-friction performance. The test results are listed in Table 1 and Table 2. ...

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Abstract

The invention relates to preparations of dialkyl dithiocarbamate hydroxy derivative (I) and borate (II) of the dialkyl dithiocarbamate hydroxy derivative, both of which can be used as environment-friendly lubricant additives, can effectively improve the antifriction performance of environment-friendly base oils, and play an antiwear role. The preparation method comprises the following steps of: reacting secondary amine and carbon disulfide to generate dialkyl dithiocarbamate in the presence of an acid-binding agent, then reacting with propylene oxide to obtain the hydroxy derivative containing a dialkyl dithiocarbamate functional group; and reacting the latter and borate according to an appropriate stoichiometric ratio so as to generate the borate. The method is simple in process, mild in conditions, and suitable for industrial production.

Description

Technical field: [0001] The present invention relates to the preparation of hydroxyl derivatives containing dialkyldithiocarbamic acid and borates thereof, and their use as environmentally friendly lubricating oil load additives. It belongs to the field of lubricating oil. Background technique: [0002] In order to reduce nitrogen oxides (NOx) in automobile exhaust X ) and other harmful gas emissions, major OEMs (Original Equipment Manufacturers) began to use three-way catalytic converters on gasoline engines. However, the industry has found that element P is harmful to the three-way catalytic converter on gasoline engines, and phosphorus-containing precipitates, especially zinc phosphate, will poison the three-way catalyst and affect the oxygen sensor. To impose restrictions. As a result, the limitations of using ZDDP began to appear, and as the new GF-4 specification issued by ILSAC is about to be fully enforced, this contradiction will become more prominent. So far, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C333/20C07F5/04C10M141/08C10M139/00C10M135/18C10N30/06
Inventor 李久盛张立张梅
Owner PETROCHINA CO LTD
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