High basicity boron-containing composite mahogany sulfonate and its preparation method and use

A technology of overbasic and sulfonate, which is used in the preparation of sodium, magnesium, and boron composite overbasic sulfonate, and the application of boron-containing sodium-magnesium composite overbasic sulfonate as a lubricating oil additive It can solve the problems such as the complexity of the preparation method of overbasic sodium sulfonate

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

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Problems solved by technology

[0005] Compared with overbased magnesium sulfonate, the pre...

Method used

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preparation example Construction

[0018] The method for preparing the boron-containing composite overbased sulfonate of the present invention comprises the following steps:

[0019] 1) In the presence of low-carbon alcohol, water, diluent oil and accelerator, the system containing alkylbenzenesulfonic acid, sodium basic compound and magnesium basic compound is reacted in a solvent;

[0020] 2) Pass into carbon dioxide reaction;

[0021] 3) adding boron compound to react;

[0022] 4) Separate the product.

[0023] Wherein, the reaction temperature in step 1) is room temperature to 60° C., and the reaction time is 20 to 60 minutes. More preferably, the magnesium basic compound may not be added in step 1), and the other reactants are reacted at room temperature to 40°C for 20 to 60 minutes, and then the magnesium basic compound is added to continue to react at room temperature to 60°C. React for 20 to 60 minutes.

[0024] The reaction temperature of step 2) is preferably 60~90 ℃, reacts to CO 2 until no long...

Embodiment 1

[0048] Preparation of boron-containing sodium-magnesium composite overbased sulfonate B-1.

[0049] 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 and 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 reflux to remove methanol, water, etc., lower the three-neck flask to room temperature, add 30 g of methanol and 30 g of boric acid, and heat up to reflux to remove methanol. Add 200 grams of solvent gasoline, centrifuge to remove slag, and flash remove solvent gasoline ...

Embodiment 2

[0051] Preparation of boron-containing sodium-magnesium composite overbased sulfonate B-2.

[0052] Repeat the step of embodiment 1, difference is that the consumption of sodium hydroxide is 2 grams, and the consumption of magnesium oxide is 18 grams. After finishing the CO 2 , Reflux to remove methanol, water, etc., add 15 grams of methanol, 12 grams of boric acid, heat up and reflux to remove methanol. Add 200 grams of solvent gasoline, centrifuge to remove the slag, and flash remove the solvent gasoline to obtain 95 grams of boron-containing sodium-magnesium composite overbased sulfonate, which is denoted as B-2. Total Base Number TBN=377mg KOH / g. ICP determined that the sodium content was 0.66%, the magnesium content was 9.21%, and the boron content was 1.86%.

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Abstract

The invention provides a boron-containing compound sulfonate with high alkalinity, sodium and magnesium containing alkylbenzenesulfonate, preparing method, and the application of said boron-containing compound sulfonate as lubricant additive. 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, adding boron compounds, separating and getting final product. The said boron containing sulfonate is characterized by good anti-extreme pressure, anti-oxygen and cleaness, high total alkalinity and adjustable sodium and magnesium content. The content of said boron-containing 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 boron-containing composite overbased sulfonate and its preparation method and application, specifically, to a composite overbased sulfonate containing sodium, magnesium and boron, its preparation method, and the Application of boron-containing sodium-magnesium composite overbased sulfonate as lubricating oil additive. 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 lubricat...

Claims

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Application Information

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IPC IPC(8): C07C309/01C07C303/02C10M135/10C10N30/04
Inventor 侯典国熊崇翔王秀高大德张玉淑
Owner CHINA PETROLEUM & CHEM CORP
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