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Synthesis method of salicylic acid/sulfonic acid mixed medium calcium-magnesium composite clearing agent

A composite detergent, salicylic acid sulfonic acid technology, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve the problems of salicylate and sulfonate precipitation, less research on metal salt detergents, etc. The effect of improved alkali value, good performance and uniform particle size

Inactive Publication Date: 2015-04-22
QINGDAO BAIZHONG CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two are often used in the form of compounding in the actual application process to make up for their respective shortcomings, but salicylate and sulfonate sometimes precipitate during compounding
Although salicylic acid and salt sulfonate are often used in a compound form in practical applications, there are few studies on the direct synthesis of metal salt detergents with mixed matrix in the preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of synthetic method of salicylic acid sulfonic acid mixed matrix calcium magnesium composite detergent, described method comprises the following steps:

[0015] (1) Add 65 parts of alkyl salicylic acid, 8 parts of petroleum ammonium sulfonate, and 150 parts of xylene into a three-necked flask equipped with a stirrer, reflux condenser, water separator and thermometer, and add 5 parts under stirring Calcium oxide, 20 parts of methanol, 4 parts of accelerator urea, heating up to 75-85°C for neutralization synthesis reaction for 1 hour;

[0016] (3) Then lower the temperature to 60°C, add 20 parts of magnesium oxide and keep it for 20 minutes;

[0017] (3) Then cool down to 40°C, add 10 parts of water, 6 parts of ammonia water and 4 parts of ammonium carbonate, wherein water and ammonia water are added twice within 20 minutes, and carbon dioxide is introduced at the same time. Min-1, increase to 120mL min-1, carry out carbonation reaction for 3 hours;

[0018] (4) ...

Embodiment 2

[0021] A kind of synthetic method of salicylic acid sulfonic acid mixed matrix calcium magnesium composite detergent, described method comprises the following steps:

[0022] (1) Add 75 parts of alkyl salicylic acid, 15 parts of petroleum ammonium sulfonate, and 180 parts of xylene into a three-neck flask equipped with a stirrer, reflux condenser, water separator and thermometer, and add 10 parts under stirring Calcium oxide, 25 parts of methanol, 8 parts of accelerator urea, heated to 75-85°C for neutralization synthesis reaction for 1 hour;

[0023] (4) Then lower the temperature to 60°C, add 25 parts of magnesium oxide and keep it for 20 minutes;

[0024] (3) Then cool down to 40°C, add 15 parts of water, 10 parts of ammonia water and 8 parts of ammonium carbonate, of which water and ammonia water are added twice within 20 minutes, and carbon dioxide is introduced at the same time, carbonation reaction is carried out for 5 hours, and carbon dioxide is introduced The rate i...

Embodiment 3

[0028] A kind of synthetic method of salicylic acid sulfonic acid mixed matrix calcium magnesium composite detergent, described method comprises the following steps:

[0029] (1) Add 70 parts of alkyl salicylic acid, 10 parts of petroleum ammonium sulfonate, and 160 parts of xylene into a three-necked flask equipped with a stirrer, reflux condenser, water separator and thermometer, and add 8 parts under stirring Calcium oxide, 22 parts of methanol, 6 parts of accelerator urea, heated to 75-85°C for neutralization synthesis reaction for 1 hour;

[0030] (5) Then lower the temperature to 60°C, add 22 parts of magnesium oxide and keep it for 20 minutes;

[0031] (3) Then cool down to 40°C, add 12 parts of water, 8 parts of ammonia water and 6 parts of ammonium carbonate, wherein water and ammonia water are added twice within 20 minutes, and carbon dioxide is introduced at the same time. Min-1, increase to 120mL min-1, carry out carbonation reaction for 3-5 hours;

[0032] (4) A...

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Abstract

The invention discloses a synthesis method of a salicylic acid / sulfonic acid mixed medium calcium-magnesium composite clearing agent, belonging to the field of lubricating oil additives. The method comprises the following steps: by using salicylic acid and ammonium sulfonate as raw materials, enabling the raw materials to react with calcium oxide under the action of methanol to generate normal calcium salicylate and normal calcium sulfonate; and enabling the obtained normal calcium salicylate and normal calcium sulfonate to react with magnesium oxide and carbon dioxide under the action of methanol, water, promoter and the like to generate micelles which take nano magnesium carbonate particles as the core and are wrapped by the normal calcium salicylate and normal calcium sulfonate molecules, wherein the micelles are uniformly dispersed in an oil phase to form a stable colloid system. The invention achieves the following beneficial effects: the total base numbers (TBN) of the products prepared by the method are all more than 400mgKOH.g<-1>, the viscosity and turbidity are small, and the dispersivity is favorable.

Description

technical field [0001] The invention belongs to the field of lubricating oil additives, and in particular relates to a synthesis method of a salicylic acid-sulfonic acid mixed matrix calcium-magnesium composite detergent. Background technique [0002] Lubricating oil detergent is one of the five major additives of modern lubricating oil (detergent, dispersant, antioxidant, extreme pressure and anti-wear agent, viscosity index improver). The development of horsepower and high power, as well as the increasing requirements of users for oil change intervals, have put forward higher requirements for the performance of lubricating oil. In order to meet these requirements of lubricating oil, it is necessary to add various types of additives to the lubricating base oil. Lubricating oil detergent is an additive developed to improve the acid neutralization ability and cleaning and dispersing function of lubricating oil. [0003] Salicylate is a kind of commonly used sulfur-free lub...

Claims

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Application Information

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IPC IPC(8): C10M163/00C10M177/00C10N30/04
Inventor 张明
Owner QINGDAO BAIZHONG CHEM TECH
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