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High basicity composite mahogany sulfonate and its preparation method and use

A technology of overbased, sulfonate, applied in bimetallic composite overbased sulfonate, its preparation, the application field of sodium-magnesium composite overbased sulfonate used as lubricating oil additive, can solve the problem of overbased The preparation method of sodium sulfonate is complicated and other problems, to achieve the effect of good extreme pressure resistance

Inactive Publication Date: 2007-07-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Compared with overbased magnesium sulfonate, the preparation method of overbased sodium sulfonate is more complicated

Method used

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Effect test

preparation example Construction

[0031] In the preparation method of the present invention, water is mainly used as a solvent for sodium and magnesium basic compounds, so that solid sodium and magnesium basic compounds form a solution or emulsion.

[0032] The sodium-magnesium composite overbased sulfonate of the present invention can be added to lubricating oil as a lubricating oil additive, exhibiting good extreme pressure resistance, oxidation resistance and detergency; preferably, the sodium-magnesium composite overbased sulfonate of the present invention The addition amount of the sulfonate in the oil is no more than 5% by weight.

Embodiment 1

[0045] Preparation of sodium-magnesium complex overbased sulfonate f-1.

[0046] Add 32 grams of synthetic alkylbenzenesulfonic acid, 42 grams of 150SN neutral oil, 2.7 grams of fatty acid, 14 grams of methanol, 102 grams of toluene, 2 grams of sodium hydroxide, and 22 grams of water into a three-necked flask, and mix and stir for 20 minutes at room temperature , add 18 grams of magnesium oxide, continue to stir for 20 minutes, add 3.2 grams of formic acid, 2 grams of ethylenediamine, raise the temperature to 60 ° C, and introduce CO 2 , ventilation rate is 150mL / min, to CO 2 until no longer absorbed. During the aeration process, the reaction temperature was maintained at 60-80°C. After distilling off methanol, toluene, water, etc., add 200 grams of solvent gasoline, centrifuge to remove slag, and flash remove solvent gasoline to obtain 105 grams of sodium-magnesium composite overbased sulfonate, denoted as f-1. Total base number TBN=428mgKOH / g. The sodium content was dete...

Embodiment 2

[0048] Preparation of sodium-magnesium complex overbased sulfonate f-2.

[0049] Repeat the step of embodiment 2, difference is that sodium hydroxide consumption is 4 grams, and magnesium oxide consumption is 16 grams. Obtain 98 grams of sodium-magnesium composite overbased sulfonate, denoted as f-2. Total base number TBN=378mgKOH / g. The sodium content was determined by ICP to be 2.00%, and the magnesium content to be 8.42%.

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PUM

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Abstract

The invention provides a bimetallic compound sulfonate with high alkalinity, sodium and magnesium containing alkylbenzenesulfonate, the preparing method, and the application of said bimetallic compound sulfonate as lubricant additive. The said sulfonate is characterized by good anti-extreme pressure, anti-oxygen and cleaness, high total alkalinity and adjustable sodium and magnesium content. The method comprises following steps: mixing alkylbenzene sulfonic acid, sodium alkali compound, magnesium alkali compound with low carbon alchol, water, diluting oil and accelerator for reaction; feeding carbon dioxide for carbonation, separating and getting final product. The content of said bimetallic compound sulfonate used as lubricatant additive in oil should be less than 5% by weight.

Description

technical field [0001] The present invention relates to a compound overbased sulfonate and its preparation method and application, in particular to a bimetallic compound overbased sulfonate containing sodium and magnesium, its preparation method, and the sodium-magnesium Application of complex overbased sulfonates as lubricating oil additives. Background technique [0002] Sulfonate is a kind of metal detergent, which is an essential additive in internal combustion engine oil. The basic part of the sulfonate can neutralize the oxyacids generated by the oxidation of lubricating oil or fuel, preventing its further oxidative condensation, thereby reducing the formation of deposits. In addition, it can neutralize sulfur oxides (SO 2 , SO 3 ) or HCl, HNO generated from gasoline combustion 3 and other inorganic acids, so as to protect the metal surface of cylinders and other components from corrosion, and also avoid further oxidation of lubricating oil by such inorganic acids....

Claims

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Application Information

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IPC IPC(8): C07C303/02C10M135/10
Inventor 侯典国熊崇翔王秀高大德张玉淑
Owner CHINA PETROLEUM & CHEM CORP
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