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Production method for alkyl sodium salicylate metallic detersive

A technology of sodium alkyl salicylate and metal detergent, which is applied in the field of lubricating oil, and can solve the problems of restricting the promotion and use of metal detergents and restricting the development of high-grade oil products.

Active Publication Date: 2008-06-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many patented technologies for the preparation of sulfonates and alkyl salicylates, as well as refining and decolorization methods for lubricating base oils, they mainly focus on the optimization of the high alkalinity process. The preparation technology of sodium salicylic acid and how to reduce the appearance and luster of lubricating oil additive products have not been reported yet, which limits the popularization and use of metal detergents to a certain extent, and restricts the development of oil products in the direction of high-grade

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  • Production method for alkyl sodium salicylate metallic detersive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: Install the four-necked flask with electric stirrer, dropping funnel, thermometer, condensation dehydrator, drop into 50.0 grams of phenol (heating in advance makes phenol completely melt), add cationic resin catalyst C 102-2 (granular) 10.0 g, mix and heat up to 40--60°C, add dropwise 70.0 g of α-olefins measured under stirring, heat up to 110-120°C, and carry out the alkylation reaction for about 6 hours. After the reaction, remove the catalyst by thermal filtration (recyclable), and carry out vacuum distillation (2.0KPa, 210°C) under the protection of nitrogen to remove unreacted phenol and α-olefin to obtain alkylphenol. Molecular weight 303, hydroxyl value 4, 91%, chroma <3.5 grade, light transmittance 90%, conversion rate 75.5%.

[0025] With electric stirring, the three-necked flask of condensing dehydrator is installed, puts into the alkylphenol prepared in the alkylation reaction of 100.0 grams, 65.0 grams of lubricating oil base oils (turbine oil...

Embodiment 2

[0028] Embodiment 2: Install the four-necked flask with electric stirrer, dropping funnel, thermometer, condensation dehydrator, drop into 50.0 grams of phenol (heating in advance makes phenol completely melt), add cationic resin catalyst C 102-2 (granular) 10.0 g, mix and heat up to 40--60°C, add dropwise 62.5 g of α-olefins measured under stirring, heat up to 110-120°C, and carry out the alkylation reaction for about 6 hours. After the reaction is over, remove the catalyst by thermal filtration (recyclable), and carry out vacuum distillation (2.0KPa, 210°C) under the protection of nitrogen to remove unreacted phenol and α-olefin to obtain alkylphenol. Molecular weight 306, hydroxyl value 4, 95%, chroma <3.5 grade, light transmittance 81%, conversion rate 86.2%.

[0029] Install the three-necked flask with electric stirring and condensation dehydrator, put into 100.0 grams of alkylphenol prepared in the alkylation reaction, 65.0 grams of lubricating oil base oil (turbine oil,...

Embodiment 3

[0032] Embodiment 3: the four-neck flask with electric stirrer, dropping funnel, thermometer, condensation dehydrator is installed, drop into 50.0 grams of phenol (heating in advance makes phenol completely melt), add cationic resin catalyst C 102-2 (granular) 8.0 g, mix and heat up to 40--60°C, add 62.5 g of measured α-olefin dropwise under stirring, heat up to 110-120°C, and carry out the alkylation reaction for about 6 hours. After the reaction is over, remove the catalyst by thermal filtration (recyclable), and carry out vacuum distillation (2.0KPa, 210°C) under the protection of nitrogen to remove unreacted phenol and α-olefin to obtain alkylphenol. The molecular weight is 292, the hydroxyl value is 5.08%, the chromaticity is less than 3.5, the light transmittance is 82%, and the conversion rate is 75.1%.

[0033] Install the three-necked flask with electric stirring and condensation dehydrator, put into 100.0 grams of alkylphenol prepared in the alkylation reaction, 65.0...

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Abstract

The invention relates to a preparation method of lubricating oil metallic detergent alkyl radical sodium salicylate. The method takes carbolic acid and alpha-olefine as the raw material, and takes specific positive ion exchange resin as the alkanization reaction catalyser to perform the alkanization reaction, and then neutralization reaction, carboxylation reaction and high alkalinity reaction are performed to prepare the alkyl radical sodium salicylate lubricating oil metallic detergent. The product compounded by the invention has better appearance and color, and excellent high temperature detergent, also has excellent thermal stability, low temperature dispersibility, anti oxygen, anticorrosion property, and a certain extreme pressure antifriction property, and is lubricating oil additive with high performance.

Description

(1) Technical field [0001] The invention relates to a method for preparing a lubricating oil additive, in particular to a method for preparing a sodium alkyl salicylate metal detergent, which belongs to the field of lubricating oil. (2) Background technology [0002] As we all know, lubricating oil metal detergents (including alkylbenzene sulfonates, sulfurized alkylphenates, alkyl salicylates, sulfuric phosphates, etc.) are mainly used in engine oils, which can inhibit lubricating oil under high temperature conditions Oxidation and deterioration and reduction of high-temperature deposits on the surface of the piston ring area (piston, piston ring, cylinder liner, ring groove) to keep the engine interior (combustion chamber and crankcase) clean. Alkyl salicylate, as an important variety of lubricating oil metal detergents, has been widely used in lubricating oils at home and abroad, and has achieved good results. [0003] The development of lubricant detergents began in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M129/50C10N30/04
Inventor 姚文钊付兴国魏存荣
Owner PETROCHINA CO LTD
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