Synthetic sulfonate additive and preparation method thereof

An additive and sulfonate technology, applied in the field of lubricating oil, can solve the problems of long production cycle, poor water separation performance, easy emulsification of products, etc., and achieve the effect of improving the reaction system

Active Publication Date: 2022-07-05
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, common synthetic sulfonate additives, especially synthetic sulfonate additives with a base value of 400 mg KOH / g or more, are prepared by using heavy alkylbenzenesulfonic acid or heavy alkylbenzenesulfonic acid in solvent systems such as heptane, toluene, and solvent oil. The mixed acid of acid / long-chain alkylbenzene sulfonic acid is prepared by neutralization reaction and multiple high alkalinity reactions as raw materials. Not only the production cycle is long, but also the obtained products are usually easy to emulsify and have poor water separation performance.

Method used

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  • Synthetic sulfonate additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 100.0 g of MVI 150 dilution oil, 10.0 g of calcium hydroxide, and 80.0 g of C20-24 long-chain alkyl benzene sulfonic acid to a 500 mL four-neck reaction flask with an electric stirrer and a condensation dehydrator, start stirring and heat up to 35 -45 ℃, after stirring evenly, add 9.0 g of n-butanol as accelerator, 3.5 g of ionic solution auxiliary prepared by calcium chloride and acetic acid in a ratio of 1:2 (mass ratio), and neutralize the reaction at 70 ± 5 ℃ for 1.0 h, then the temperature was raised to 150±5°C, the butanol and the water generated by the reaction were removed from the system, and the calcium alkylbenzene sulfonate in the system formed stable micelle micelles; then the temperature was lowered to 45-55°C, and the reaction system was added with 45.0 g of calcium hydroxide, 10.0 g of calcium dodecyl phenate sulfide, 13.0 g of n-butanol as an accelerator, and 18.0 g of methanol as an accelerator. Carbon dioxide was introduced for high alkalinity reac...

Embodiment 2

[0033] Add 100.0 g of HVI 150 dilution oil, 15.0 g of calcium hydroxide, and 80.0 g of C20-24 long-chain alkyl benzene sulfonic acid to a 500 mL four-neck reaction flask with an electric stirrer and a condensation dehydrator, start stirring and heat up to 35 -45 ℃, after stirring evenly, add 9.0 g of n-butanol as accelerator, 3.0 g of ionic solution auxiliary prepared by calcium chloride and acetic acid in a ratio of 1:2 (mass ratio), and neutralize the reaction at 70 ± 5 ℃ for 1.0 h, then the temperature was raised to 150±5°C, the butanol and the water generated by the reaction were removed from the system, and the calcium alkylbenzene sulfonate in the system formed stable micelle micelles; then the temperature was lowered to 45-55°C, and the reaction system was added with 45.0 g of calcium hydroxide, 8.0 g of calcium dodecyl phenol sulfide, 13.0 g of n-butanol as an accelerator, and 18.0 g of methanol as an accelerator. Carbon dioxide was introduced for high alkalinity reacti...

Embodiment 3

[0036] Add 100.0 g of HVI 150 dilution oil, 10.0 g of calcium hydroxide, and 90.0 g of C20 long-chain alkyl benzene sulfonic acid to a 500 mL four-neck reaction flask with an electric stirrer and a condensation dehydrator, start stirring and heat up to 35-45 oz. ℃, after stirring evenly, add 9.0g of n-butanol as accelerator, 6.0g of ionic solution auxiliary agent prepared by calcium chloride and acetic acid in a ratio of 1:2 (mass ratio), neutralize at 70±5℃ for 1.0h, Then the temperature is raised to 150±5°C, the butanol and the water generated by the reaction are removed from the system, and the calcium alkylbenzene sulfonate in the system forms stable micelle micelles; Calcium 50.0g, sulfurized pentadecylphenate calcium 15.0g, accelerator n-butanol 15.0g, accelerator methanol 20.0g, start to pass carbon dioxide to carry out high alkalinization reaction, when the amount of carbon dioxide introduced reaches 13.0L, the second The remaining calcium hydroxide 50.0g was added for...

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Abstract

The invention relates to a synthetic sulfonate additive and a preparation method thereof. The method uses long-chain alkyl benzene sulfonic acid, calcium hydroxide, alcohol accelerators and the like as raw materials, and goes through the steps of neutralization reaction, high alkalinity reaction and the like under the action of a unique auxiliary agent in a certain proportion of ingredients to prepare A synthetic sulfonate additive with a total base number of more than 400 mg KOH / g was developed. The synthetic sulfonate additive product prepared by the invention has excellent colloidal stability, high-temperature detergency, acid neutralization performance, and excellent oil-water separation performance, which not only meets the use requirements of high-grade internal combustion engine oil, but also is suitable for marine oil. It is a kind of lubricating oil additive with excellent performance.

Description

technical field [0001] The invention relates to a lubricating oil additive for blending medium and high-grade lubricating oils and a preparation method thereof, in particular to a synthetic sulfonate additive and a preparation method thereof, belonging to the field of lubricating oils. Background technique [0002] Metal detergents are a class of surface-active substances that can adsorb and encapsulate solid particulate pollutants in lubricating oil, and suspend particulate pollutants in lubricating oil to ensure that the oil participating in the lubrication cycle is clean; it can be used in lubricating oil. Under the condition of high temperature operation of the engine, the oxidative deterioration of the lubricating oil is inhibited, and the high temperature deposits on the surface of the piston ring area are reduced, so that the combustion chamber and the piston ring area of ​​the engine are kept clean. Due to its special cleaning properties, metal detergents have always...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M135/10C10M177/00C07C303/32C07C309/31C10N30/04C10N40/25C10N10/04
CPCC10M135/10C10M177/00C07C303/32C07C309/31C10M2219/046Y02P20/54
Inventor 刘玉峰马涛汤仲平刘雨花
Owner PETROCHINA CO LTD
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