Synthesis method of high-base-number basic zinc carbonate lubricant additive

A technology of lubricating oil additives and synthesis methods, applied in the direction of additives, lubricating compositions, petroleum industry, etc.

Active Publication Date: 2012-12-19
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many patents related to the preparation of calcium-based and magnesium-based detergents, and the main ones are low-to-medium alkali value detergents, while there are few reports on the synthesis of zinc-based detergents.

Method used

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  • Synthesis method of high-base-number basic zinc carbonate lubricant additive
  • Synthesis method of high-base-number basic zinc carbonate lubricant additive

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A kind of synthetic method of high alkali value basic zinc carbonate lubricating oil additive, it comprises the following steps:

[0024] 1) Install the three-neck flask with electric stirring, condenser, and dropping funnel, put in the prepared 30 mL 1.25mol / L zinc chloride aqueous solution, adjust the pH value to 8 with ammonia water, and then raise the temperature to 80°C, Start the stirrer, drop 60 mL of 1.5mol / L aqueous sodium bicarbonate solution under stirring conditions, and obtain a white basic zinc carbonate sol after reacting for 2 hours;

[0025] 2) Lower the basic zinc carbonate sol to 25°C, adjust the pH value to 7 with ammonia water, and then add 50 mL of dissolved 4.89 g of alkylbenzenesulfonic acid (molecular formula of alkylbenzenesulfonic acid: C 12 h 25 C 6 h 4 SO 3 H) Toluene solution, after reacting for 5 hours, a transparent oil-water two-phase system was obtained. The oil phase was separated and dried to obtain 9.02 g of oil-soluble basic zi...

Embodiment 2

[0027] A kind of synthetic method of high alkali value basic zinc carbonate lubricating oil additive, it comprises the following steps:

[0028] 1) Install the three-necked flask with electric stirring, condenser, and dropping funnel, put in the prepared 30 mL 1.25mol / L zinc nitrate aqueous solution, adjust the pH value to 7 with ammonia water, then raise the temperature to 50°C, and start Stirrer, drip 60 mL of 1.5mol / L sodium carbonate aqueous solution under stirring condition, obtain white basic zinc carbonate sol after reacting for 1h;

[0029] 2) Lower the basic zinc carbonate sol to room temperature, adjust the pH value to 7 with ammonia water, then add 14.27g stearic acid (C 17 h 35 COOH) in chloroform solution, after 8 hours of reaction, a transparent oil-water two-phase system was obtained. The oil phase was separated and dried to obtain 8.81 g of oil-soluble basic zinc carbonate nanoparticles.

Embodiment 3

[0031] A kind of synthetic method of high alkali value basic zinc carbonate lubricating oil additive, it comprises the following steps:

[0032] 1) Install the three-neck flask with electric stirring, condenser and dropping funnel, put in the prepared 30 mL 1.25mol / L zinc nitrate aqueous solution, adjust the pH value to 8 with ammonia water, then raise the temperature to 90°C, start Stirrer, drip 60 mL 3mol / L urea aqueous solution under stirring condition, obtain white basic zinc carbonate sol after reacting for 8 hours;

[0033] 2) Lower the basic zinc carbonate sol to 60 °C, adjust the pH value to 7 with ammonia water, and then add 80 mL of 7.1 g alkylthiophenol ((C 8 h 17 C 6 h 3 Oh) 2 S 2 ) in toluene, after 5 hours of reaction, a transparent oil-water two-phase system was obtained. The oil phase was separated and dried to obtain 11.2 g of oil-soluble basic zinc carbonate nanoparticles.

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Abstract

The invention relates to a synthesis method of a high-base-number basic zinc carbonate lubricant additive, which comprises the following steps: a) respectively preparing a zinc precursor water solution and a precipitant water solution, regulating the pH value of the zinc precursor water solution to 6-9, then heating to 50-100 DEG C, dropwisely adding the precipitant water solution, and reacting under this temperature condition for 0.5-10 hours to obtain stable basic zinc carbonate sol; and b) preparing an organic medium solution of modifier, cooling the basic zinc carbonate sol to 20-80 DEG C, regulating the pH value to 7-10, then adding the organic medium solution of modifier into the basic zinc carbonate sol while stirring, reacting for 0.5-5 hours, obtaining a transparent oil-water two-phase system after the reaction is finished, separating the oil phase, and drying. The base number of the lubricant additive synthesized through the method is up to 250-400 mgKOH/g, and meets the requirements of detersive for high base number and ultra high base number.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil additive preparation, and in particular relates to a method for synthesizing a high alkali value basic zinc carbonate lubricating oil additive. Background technique [0002] As we all know, lubricating oil metal cleaners are mainly used in engine oils to inhibit the oxidation and deterioration of lubricating oil or reduce the generation of high-temperature deposits on the surface of the piston ring area under high temperature conditions, so as to keep the interior of the engine clean. In today's lubricating oil detergent series products, alkyl salicylate products have better high-temperature detergency performance, and all metal content can be used for neutralization. At the same time, they have certain low-temperature dispersion, anti-oxidation and anti-corrosion And extreme pressure and anti-wear ability, it has been widely used in all levels of oil products. [0003] In recent years, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/10C10M177/00
Inventor 张治军陈金亮李小红王华
Owner HENAN UNIVERSITY
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