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

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

Active Publication Date: 2009-10-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Compared with overbased magnesium sulfonate, the preparation method of overbased sodium sulfonate is more complicated

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 composite overbased sulfonate, including a salt of sodium and magnesium alkylbenzenesulfonic acid, a preparation method thereof, and a method for using the boron-containing composite overbased sulfonate as a lubricating oil additive application. The preparation method of the present invention is to react alkylbenzenesulfonic acid with sodium basic compound and magnesium basic compound in a solvent in the presence of low-carbon alcohol, water, diluent oil and accelerator, and then carbonate with carbon dioxide, A boron compound is then added, and the product is finally isolated. The boron-containing composite overbasic sulfonate of the invention has good extreme pressure resistance, oxidation resistance and cleanliness, and has high total base number and adjustable sodium and magnesium content. When the boron-containing composite overbased sulfonate is used as a lubricating oil additive, its content in the oil is no more 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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Patent Type & Authority Patents(China)
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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