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Preparation method of oil-soluble organic molybdenum friction modifier

A technology of friction modifier and organic molybdenum, which is applied in the direction of additives, petroleum industry, lubricating composition, etc., can solve the problems of not being suitable for large-scale industrial production, high production cost, and not easy to filter, etc., and achieve good oil solubility and anti-oxidation ability, low production cost, good wear reduction and anti-wear properties

Inactive Publication Date: 2020-07-17
XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. The above synthesis method requires the use of sodium hydrosulfide, hydrochloric acid, sulfuric acid, methanol, toluene and other reagents. The above reagents or their by-products may be brought into the product, and corrosion problems may occur when used as lubricant additives, and the production process safety issues; if these reagents or their by-products are removed, additional processing costs are required, resulting in high production costs;
[0009] 2. The above synthesis method needs to be washed and filtered, the process is complicated, and the product is viscous, not easy to filter, and not suitable for large-scale industrial production

Method used

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preparation example Construction

[0037] Such as figure 1 As shown, the invention provides a kind of preparation method of oil-soluble organic molybdenum friction modifier, comprising:

[0038] S1. Stir the water, molybdenum source, dialkylamine mixture and diluent oil evenly to form a composite solution, and keep the temperature of the composite solution at 5-14°C; wherein,

[0039] The molybdenum source includes one or more of ammonium heptamolybdate, sodium molybdate and molybdenum trioxide, preferably the molybdenum source is ammonium heptamolybdate;

[0040] Dialkylamine mixture is the mixture of diisooctylamine and isomeric ditridecylamine or the mixture of diphenylamine and isomeric ditridecylamine; the mol ratio of diisooctylamine and isomeric ditridecylamine is (1: 5)-(5:1), the molar ratio of diphenylamine to isomeric ditridecylamine is (1:5)-(5:1).

[0041] The diluent oil is naphthenic base oil or high-boiling aromatic solvent oil, the aromatic content of naphthenic base oil is more than 40%, and...

Embodiment 1

[0053] The invention provides a preparation method of an oil-soluble organic molybdenum friction modifier, comprising:

[0054]Add 17.56 g of ammonium heptamolybdate, 36 g of water, 12.08 g of diisooctylamine, 19.01 g of isomeric ditridecylamine, and 40 g of naphthenic base oil in a 500 mL four-necked flask equipped with mechanical stirring, a thermometer, and a reflux condenser. , stirred evenly until completely dissolved; then added dropwise 15.23g of carbon disulfide at 10°C, after the dropwise addition, raised the temperature to 90°C, and refluxed for 8h; The lower water phase was taken out; then the upper oil phase was distilled under reduced pressure, the vacuum degree was -0.095 MPa, the temperature was gradually raised to 130° C., kept for 4 hours, and the temperature was lowered to obtain a brown oily product.

[0055] The measured Mo content is 10.02%, the S content is 10.99%, the mechanical impurity is 0.004%, and it is completely dissolved in the base oil.

Embodiment 2

[0057] The invention provides a preparation method of an oil-soluble organic molybdenum friction modifier, comprising:

[0058] Add 17.56g of ammonium heptamolybdate, 36g of water, 12.08g of diisooctylamine, 19.01g of isomeric ditridecylamine, and 40g of high-boiling point aromatic hydrocarbon solvent oil into a 500mL four-necked flask equipped with mechanical stirring, a thermometer, and a reflux condenser. , stir evenly until completely dissolved; then add 19g of carbon disulfide dropwise at 12°C, after the dropwise addition, raise the temperature to 95°C, and reflux for 10h; after the reaction, add 120g of 120# solvent oil, stir for 10min, stand for 30min, separate The lower water phase; then the upper oil phase was distilled under reduced pressure, the vacuum degree was -0.095MPa, the temperature was gradually raised to 120°C, kept for 6 hours, and the temperature was lowered to obtain a brown oily product.

[0059] The measured Mo content is 10.15%, the S content is 11.20...

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Abstract

The invention discloses a preparation method of an oil-soluble organic molybdenum friction modifier, wherein the preparation method comprises the steps: uniformly stirring water, a molybdenum source,a dialkylamine mixture and diluent oil to form a composite solution; dropwise adding carbon disulfide into the composite solution, heating to a preset temperature, and carrying out a reflux reaction;after the reaction is finished, adding solvent oil for extraction, standing, and separating out a water phase; and carrying out vacuum-pumping reduced pressure distillation on the upper-layer oil phase to obtain the organic molybdenum friction modifier. According to the preparation method, inorganic and organic reagents such as sodium hydrosulfide, hydrochloric acid, sulfuric acid, methyl alcoholand methylbenzene are not used, equipment under pressure is not needed, the production cost is low, and the production process is safe; the preparation method disclosed by the invention does not needcomplicated processes such as water washing and filtering, adopts solvent oil to extract the product after synthesis is finished, is simple in process and strong in operability and repeatability, andis suitable for large-scale industrial production; meanwhile, the separated water phase and the solvent oil recovered by reduced pressure distillation can be recycled, and basically no three wastes are generated.

Description

technical field [0001] The invention relates to the technical field of organic molybdenum friction modifiers, in particular to a preparation method of an oil-soluble organic molybdenum friction modifier. Background technique [0002] Organic molybdenum friction modifiers are mainly divided into two categories: molybdenum dialkyldithiophosphate (MoDDP) and molybdenum dialkyldithiocarbamate (MoDTc); among them, molybdenum dialkyldithiophosphate contains Phosphorus can cause exhaust gas catalyst poisoning. With the increasing requirements for energy saving, emission reduction and environmental protection, the dosage is gradually decreasing; molybdenum dialkyl dithiocarbamate has anti-wear, anti-wear, anti-oxidation, Low corrosion and other advantages, widely used in internal combustion engine oil, gear oil, hydraulic oil, automatic transmission oil and other lubricating oil products. [0003] Various methods for preparing molybdenum dialkyldithiocarbamate have been disclosed i...

Claims

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Application Information

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IPC IPC(8): C10M135/18C10M169/04C10M177/00C10N30/06C10N30/10
CPCC10M135/18C10M169/04C10M177/00C10M2219/068C10M2227/066C10M2203/1065C10M2203/10
Inventor 王世俊徐坤范金凤
Owner XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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