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Oil-soluble molybdenum dialkyldithiocarbamate additive preparation method

A dialkyl dithiocarbamic acid and molybdenum additive technology, applied in additives, chemical instruments and methods, petroleum industry, etc., can solve the problem that the product does not have oil solubility

Active Publication Date: 2014-01-15
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The products synthesized by the above methods are not oil-soluble. In order to solve the problem of dissolving molybdenum dialkyldithiocarbamate in oil, a cosolvent must be added to the molybdenum dialkyldithiocarbamate product

Method used

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  • Oil-soluble molybdenum dialkyldithiocarbamate additive preparation method
  • Oil-soluble molybdenum dialkyldithiocarbamate additive preparation method
  • Oil-soluble molybdenum dialkyldithiocarbamate additive preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Example 1: In a 500ml reaction flask, add 14.4g of molybdenum trioxide to an aqueous solution containing 38 grams of sodium sulfide, stir at room temperature until completely dissolved, add 80g of Karamay minus second-line naphthenic oil and dropwise add 20 grams of 35% sulfuric acid After completion, add 32.9g of N,N'-di-n-octyldithiocarbamate, heat up to 80°C, react for 4h, filter, wash with water, and distill under reduced pressure to obtain 124.8g of dark brown liquid.

Embodiment 2

[0032] Example 2: In a 500ml reaction flask, add 14.4g of molybdenum trioxide to an aqueous solution containing 28 grams of sodium sulfide, stir at room temperature until completely dissolved, add 80g of Karamay minus three-line naphthenic oil and dropwise add 20 grams of 35% sulfuric acid After completion, 32.9g of N,N'-diisooctyldithiocarbamate was added, heated to 80°C, reacted for 4h, filtered, washed with water, and distilled under reduced pressure to obtain 122.1g of tan liquid.

Embodiment 3

[0033] Example 3: In a 500ml reaction bottle, add 14.4g of molybdenum trioxide to an aqueous solution containing 28 grams of sodium sulfide, stir at room temperature until completely dissolved, add 40g of Karamay minus second-line naphthenic oil, and then add 40g of Karamay minus three-line cycloalkane Add 20 grams of 35% sulfuric acid dropwise to alkane oil, and then add 32.9 g of N,N'-diisooctyldithiocarbamate, heat up to 80°C, react for 4 hours, filter, wash with water, and distill under reduced pressure to obtain brown Brown liquid 121.8g.

[0034] All target compounds are purified by column chromatography. The Mo and S elemental analysis results of the target compounds are shown in Table 1. From the elemental analysis results in Table 1, it can be seen that the measured values ​​of C, H, and N elements of all target compounds are consistent with the molecular formula The calculated theoretical values ​​are basically consistent, and the absolute error is within the allowab...

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Abstract

The present invention provides molybdenum dialkyldithiocarbamate, wherein alkyl groups are the same or different C1-C20 straight chain or branch chain alkyl groups. The present invention further relates to a preparation method for the compound, wherein a hexavalent molybdenum source compound reacts with an alkali metal sulfide or an alkali metal hydrosulfide, and then reacts with dithiocarbamic acid. The prepared compound has characteristics of good friction reduction, good wear resistance and anti-oxidation, and can be added to mineral oils, synthetic oils, vegetable oils, synthetic esters, polyether, hydrogenated oils, lithium base grease, calcium base grease and other lubricating oils (greases) so as to obtain lubricating systems with characteristics of good wear resistance and good friction reduction, wherein the addition amount is 0.1-4.0 wt% when being adopted as the additive.

Description

technical field [0001] The invention relates to a preparation method of oil-soluble molybdenum dialkyl dithiocarbamate, and the compound can be used as an antioxidant and friction-reducing additive of lubricating oil. Background technique [0002] In recent years, fuel economy has become one of the hot topics in the world with the shortage of oil and the rise of fuel prices worldwide. In the API SH specification, the energy-saving test was determined as a customer requirement. The ILSAC specification has taken the energy-saving engine test as one of its requirements from the beginning. The oil products of the GF-1 specification are required to pass the program VI energy-saving test. The energy-saving performance of fuel oil is required to be evaluated through the ⅥA energy-saving test, and the energy-saving performance of fuel oil is required to be evaluated through the ⅥB and ⅥD energy-saving test for GF-3, GF-4, and GF-5 specifications. The energy-saving performance of int...

Claims

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Application Information

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IPC IPC(8): C07F11/00C10M139/00C10N30/06C10N30/10
Inventor 仇建伟李建明周旭光李久盛薛卫国
Owner PETROCHINA CO LTD
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