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A kind of sulfonate detergent and its preparation method and application
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A technology of detergent and sulfonate, which is applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve the problems of limited anti-oxidation effect, achieve the effects of improving anti-oxidation performance, improving phase separation problems, and improving post-treatment efficiency
Active Publication Date: 2020-04-21
江西福安路润滑材料有限公司
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However, in the above-mentioned disclosed patents, the main function of adding a small amount of phenoxide and / or salicylate is to solve the liquid phaseseparation problem of the reaction system in the preparation process of sulfonate, generally adding 0.1wt%-1wt%, so The antioxidant effect on improving the final product is limited, and phenate and / or salicylate detergents still need to be added when preparing lubricating oil compositions
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[0022] The embodiment of the present invention discloses a preparation method of a sulfonate detergent, comprising:
[0023] a) Neutralize reaction by mixing alkylsulfonic acid and / or alkylsulfonate, basic compound and solid acid with diluent and / or accelerator which may or may not be added;
[0025] c) Separation to obtain the target product.
[0026] In the above-mentioned preparation method, the preparation method of the alkylsulfonic acid and / or alkylsulfonate comprises: aromatic compound and C 8 -C 45 Alkylation of olefins, followed by reaction with a sulfonating agent to give alkylsulfonic acids and / or alkylsulfonates.
[0028] And / or, the olefin comprises C 14 -C 30 Any one or a combination of two or more of the olefins, preferably ...
Embodiment 1
[0061] Add 30g of alkylsulfonic acid, 7mL of methanol, 85mL of toluene, 2.3g of calciumoxide, 4.6mL of water and 10g of acid clay activated by C14 alkylsalicylic acid into the reaction flask equipped with a stirrer, and react at no more than 75°C After 1h, add 25g of calciumhydroxide, mix for 20min, pass CO 2 (The rate is 100mL / min~400mL / min) over 2 hours, add 32g of base oil, heat up to 120°C to distill methanol and generated water, etc., then centrifugally filter to obtain a clear solution, distill toluene under reduced pressure at 150°C, and finally get CalciumSulfonate Detergent.
Embodiment 2
[0063] Add 30g of alkylsulfonic acid, 9.7g of methanol, 92.8g of toluene, 4.5g of calciumhydroxide and 15g of acid clay activated by C12 alkylphenol into the reaction flask equipped with a stirrer, and react at no more than 75°C for 1h, Add 20g of calcium hydroxide, mix for 20min, pass CO 2 (The rate is 100mL / min~400mL / min) over 2 hours, add 32g of base oil, heat up to 120°C to distill methanol and generated water, etc., then centrifugally filter to obtain a clear solution, and distill toluene under reduced pressure at 150°C. Finally, a calcium sulfonate detergent is obtained.
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Abstract
The invention discloses a sulfonate detergent and its preparation method and application. The method comprises: a) mixing alkylsulfonic acid and / or alkylsulfonate, basic compound and solid acid with The added diluent and / or accelerator are mixed to undergo a neutralization reaction; b) adding a basic compound and introducing carbon dioxide to carry out a carbonation reaction; c) separating to obtain a target product. Utilize the acid clay activated by alkylphenol and / or alkylsalicylic acid in the process of preparing sulfonate detergent by utilizing the method of the present invention, not only improving the phase separation problem in the reaction process, but also solid acid in the aftertreatment process It can be used as a filter aid to improve post-treatment efficiency. In addition, the sulfonate detergent synthesized by the present invention not only has good acid neutralization ability, high temperature detergency, rust resistance and corrosion resistance, but also has good oxidation resistance.
Description
technical field [0001] The invention relates to the field of lubricating oil detergents, in particular to a sulfonate detergent, its preparation method and application. Background technique [0002] Lubricating oil detergent is one of the main types of lubricating oil additives, and its consumption is second only to the dispersant with the largest consumption. It not only has the functions of solubilizing, dispersing sludge and cleaning, especially the detergent with high alkali value, but also has the function of neutralizing the acidic substances generated during the use of lubricating oil, which can significantly reduce the corrosion of such acidic substances on devices Therefore, it is widely used to prepare marine cylinder oil, gasoline engine oil and diesel engine oil for automobiles, internal combustion engine oil and air-cooled engine oil, etc. [0003] At present, lubricating oil detergents mainly include sulfonate, alkylphenate, salicylate, naphthenate, oleate and...
Claims
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