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Preparation method of ultra-overbased synthetic magnesium sulfonate

A technology of ultra-high base number and magnesium sulfonate, applied in lubricating compositions, petroleum industry, additives, etc., can solve the problems of high magnesium content, high precipitation value and high base number

Active Publication Date: 2017-05-17
XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The ultra-high base value synthetic magnesium sulfonate products above TBN400 have high base value and high magnesium content. During the carbonation process, more magnesium salt waste residues are often produced. These magnesium salt waste residues are brought into the finished product due to incomplete treatment, resulting in ultra-high base value synthesis. Magnesium sulfonate products have high turbidity, high precipitation value, and easy skinning

Method used

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  • Preparation method of ultra-overbased synthetic magnesium sulfonate

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[0022] The embodiment of the present invention discloses a preparation method for synthesizing magnesium sulfonate with ultra-high base value, comprising the following steps:

[0023] A), mixing one of polyisobutylene succinic anhydride and polyisobutylene succinamide, organic solvent, small molecule organic acid, saturated fatty acid, low carbon alcohol, heavy alkylbenzene sulfonic acid and linear alkylbenzene sulfonic acid, get the mixture;

[0024] B), add the mixture of magnesia and diluent oil in the mixture, add water and co-accelerator after heating up the reaction, and pass into carbon dioxide, then add the mixture of magnesia and dilute oil, pass into carbon dioxide, will get after reaction The reaction material is heated to remove low-carbon alcohol and water to obtain a liquid material;

[0025] Or, B), adding a mixture of magnesium oxide and diluent oil to the mixture, adding water and a co-accelerator after heating up the reaction, and introducing carbon dioxide,...

Embodiment 1

[0034] The preparation of embodiment 1 linear alkylbenzenesulfonic acid

[0035] Add 10g of red oil and 150g of toluene into the reaction kettle, and drop 100g of C20~C24α-olefins into the reaction kettle at 50~60°C (the mass ratio of C20, C22 and C24 is 40~55:20~35:5~ 25), after the dropwise addition, continue to react for a period of time, stand still for 2 to 4 hours to separate layers, take the supernatant and filter, and then remove unreacted toluene through distillation to obtain 120 g of C20-C24 long-chain linear alkylbenzene; C24 long-chain linear alkylbenzene was slowly passed into 30g of sulfur trioxide gas for sulfonation reaction at 40-60°C for 30 minutes, and then aged to divide the acid to obtain 140g of C20-C24 long-chain linear alkylbenzenesulfonic acid (average molecular weight 470- 530, active material content 83~93wt%).

[0036] Preparation of Heavy Alkylbenzenesulfonic Acids

[0037] Add 200g of heavy alkylbenzene with a distillation range of 385°C to 450...

Embodiment 2

[0040] Add 100g of xylene, 3g of formic acid, 6g of stearic acid, 20g of methanol, and 3g of alkene anhydride into a 500ml flask and mix well, then add 35g of a mixture of heavy alkylbenzenesulfonic acid and linear alkylbenzenesulfonic acid with a mass ratio of 10:90 , add 30g of a mixture of magnesium oxide and base oil with a mass ratio of 1:2, raise the temperature to 40-50°C for neutralization for 30min, add 5g of water, inject 3L of carbon dioxide at a gas rate of 120ml / min, add 15g of 20% ammonia water, and then add Take 30g of magnesium oxide and base oil mixture with a mass ratio of 1:2, keep the temperature constant, then ventilate to 13L, stop ventilating, heat the reaction material to 100°C under the pressure of -0.035mpa, remove the alcohol water in the system, and get 145g of liquid material, the turbidity of the measured material is 120NTU; add 155g of xylene and heat to 50°C and centrifuge under the condition of a centrifugal force of 500g to obtain 297g of super...

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Abstract

The invention provides a preparation method of ultra-overbased synthetic magnesium sulfonate. The preparation method specially comprises the following steps of adding heavy alkylbenzene sulfonate and linear alkyl benzene sulfonate into a reaction system consisting of organic solvent, micromolecule organic acid, saturated fatty acid, low carbon alcohol and the like; adding a magnesium oxide and thinning oil mixture by batches in different phases, adding an accelerant and water, introducing carbon dioxide, removing alcohol and water out of the system under certain conditions, and centrifuging under certain conditions; finally, relieving pressure and distilling, so as to obtain the ultra-overbased synthetic magnesium sulfonate. The preparation method has the advantage that the heavy alkylbenzene sulfonate and the linear alkyl benzene sulfonate are used as reaction raw materials, the magnesium oxide and thinning oil mixture is added by batches in different phases, and finally the ultra-overbased synthetic magnesium sulfonate with low settling value, low turbidity and no caking is obtained.

Description

technical field [0001] The invention relates to the technical field of ultra-high base value synthetic magnesium sulfonate, in particular to a preparation method of ultra-high base value synthetic magnesium sulfonate. Background technique [0002] Ultra-high base value synthetic magnesium sulfonate is a sulfonate metal detergent and dispersant product, characterized by high base value, low ash content, strong neutralization ability, good detergency and rust resistance, and is used in medium and high-grade internal combustion engine oils and certain Widely used in some fuel oils. [0003] The preparation of ultra-high base value synthetic magnesium sulfonate is a complex chemical reaction process of gas, liquid, and solidification. Generally, solvents, accelerators, base oil, magnesium oxide, sulfonic acid or neutral ammonium sulfonate and other raw materials are added to the reaction in sequence. In the still, control a certain reaction temperature to carry out neutralizati...

Claims

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Application Information

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IPC IPC(8): C10M159/24
CPCC10M159/24C10M2219/046
Inventor 卜卫元范金凤李董轩李学文
Owner XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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