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Preparation of nanoscale high-alkalinity calcium alkyl salicylate additive

A technology of calcium alkyl salicylate and high alkalinity, which is applied in the field of lubricating oil, can solve problems such as difficulty in high alkalinity, poor water separation performance, and poor water separation performance, so as to improve overall performance and benefit Water-separation performance, anti-emulsification ability improvement effect

Active Publication Date: 2013-01-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In metal detergents with high alkalinity, sulfonates are easily emulsified in water and have poor water separation performance; due to the limitation of their own structure, sulfurized alkylphenates often need to be used in combination with sulfonates to exert their performance characteristics , and it is not easy to become high alkalinity (usually the total alkali value of sulfurized alkylphenate calcium with high alkali value is only about 250mgKOH / g), and the water separation performance is not good; in comparison, calcium alkyl salicylate with low alkali value It has good water separation, but the high alkalinity alkyl salicylate has poor water separation performance and poor emulsification resistance, so its application in marine oil is limited

Method used

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  • Preparation of nanoscale high-alkalinity calcium alkyl salicylate additive
  • Preparation of nanoscale high-alkalinity calcium alkyl salicylate additive
  • Preparation of nanoscale high-alkalinity calcium alkyl salicylate additive

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Effect test

Embodiment 1

[0023] Embodiment 1: Add straight-run gasoline 120ml, methanol 120ml (industrial product), calcium hydroxide 37.0g, water 9.5g in the 500mL four-neck flask with electric stirrer and condensation dehydrator, start stirring and be warming up to 40- 50°C, then add 5.0g of alkylbenzenesulfonic acid, 90.0g of alkyl salicylic acid, 0.85g of anti-emulsifier (polyether ester), at this time, it can be seen that the system has a temperature rise phenomenon, and the reaction temperature is controlled at 45-55°C , for neutralization reaction 1.0h. Then feed a certain amount of carbon dioxide gas (control the ventilation rate 200-250ml / min) to carry out the high alkalinity reaction for about 2.0 hours. After the reaction is completed, the temperature is raised to 110°C, water and alcohol accelerators are removed, diluted with a solvent and centrifuged The residue was removed, and finally the solvent was removed by distillation under reduced pressure to obtain a product with a base number o...

Embodiment 2

[0024] Embodiment 2: Add straight-run gasoline 120mL, methanol 120ml (industrial product), calcium hydroxide 37.0g, water 9.5g in the 500mL four-neck flask with electric stirrer and condensation dehydrator, start stirring and be warming up to 40- 50°C, then add 10.0g of alkylbenzenesulfonic acid, 90.0g of alkyl salicylic acid, 0.85g of anti-emulsifier (polyether ester), control the reaction temperature at 45-55°C, react for 1.0h, and carry out neutralization reaction. Then feed a certain amount of carbon dioxide gas (control the ventilation rate 200-250ml / min) to carry out the high alkalinity reaction for about 2.0 hours. After the reaction is completed, the temperature is raised to 110°C, water and alcohol accelerators are removed, diluted with a solvent and centrifuged The slag was removed, and finally the solvent was removed by distillation under reduced pressure to obtain a product with a base number of 322 mg KOH / g, a Ca content of 11.69%, an S content of 0.58%, and a turb...

Embodiment 3

[0025]Embodiment 3: Add straight-run gasoline 120mL, methanol 120ml (industrial product), calcium hydroxide 30.0g, water 9.5g in the 500mL four-neck flask with electric stirrer and condensation dehydrator, start stirring and be warming up to 40- 50°C, then add 15.0g of alkylbenzenesulfonic acid, 90.0g of alkyl salicylic acid, 0.85g of anti-emulsifier (polyether ester), control the reaction temperature at 45-55°C, react for 1.0h, and carry out neutralization reaction. Then feed a certain amount of carbon dioxide gas (control the ventilation rate 200-250ml / min) to carry out the high alkalinity reaction for about 2.0 hours. After the reaction is completed, the temperature is raised to 110°C, water and alcohol accelerators are removed, diluted with a solvent and centrifuged The slag was removed, and finally the solvent was evaporated under reduced pressure to obtain a product with a base value of 326 mg KOH / g, a Ca content of 12.70%, and a turbidity of 107.5 JTU.

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Abstract

The invention relates to a nanoscale high-alkalinity calcium alkyl salicylate additive and a preparation method of the nanoscale high-alkalinity calcium alkyl salicylate additive. The method comprises the following steps of: using alkyl salicylic acid, calcium hydroxide and surfactant and the like as raw materials, performing processes of neutralization and high alkalinity reaction on the ingredients according to a certain proportion to prepare a high-alkalinity calcium alkyl salicylate metal cleaner with the total alkalinity higher than 280mgKOH / g. The high-alkalinity calcium alkyl salicylate provided by the invention not only has all the basic properties of a traditional high-alkalinity calcium alkyl salicylate product, but also has good sub-aqueous and anti-emulsifying properties, not only satisfies the use requirement of high-grade internal combustion engine oil, but also is suitable for the use in the oil products such as ship oil with a high requirement on the sub-aqueous property, and thus the high-alkalinity calcium alkyl salicylate provided by the invention is a lubricant additive with a perfect property.

Description

(1) Technical field [0001] The invention relates to a nano-scale high-basic calcium alkyl salicylate lubricating oil additive product and a preparation method thereof, belonging to the field of lubricating oil. (2) Background technology [0002] As one of the functional additives of internal combustion engine oil, metal detergent plays an important role in the modern lubrication industry. It can inhibit the oxidation and deterioration of lubricating oil under high temperature operating conditions or reduce the formation of high temperature deposits on the surface of the piston ring area, so that the engine will burn The chamber and piston ring area are kept clean. [0003] Among the metal detergents, the three types of alkylbenzene sulfonate, sulfurized alkylphenate and alkyl salicylate account for the vast majority, and the preparation process of the first two products is mainly based on the introduction of foreign related technologies . Alkyl salicylate is an important v...

Claims

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Application Information

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IPC IPC(8): C10M161/00C10M141/08C10M141/06C10M177/00C07C51/41C07C65/05
Inventor 刘玉峰姚文钊刘雨花肖美君
Owner PETROCHINA CO LTD
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