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Preparation method of corrosion inhibitor of methanol gasoline

A corrosion inhibitor, methanol gasoline technology, applied in the field of metal anti-corrosion, can solve the problems of corrosion, reducing the durability and safety of automobiles, and the use standard of methanol gasoline has not been introduced for a long time, so as to achieve good compatibility and less addition Effect

Active Publication Date: 2014-04-16
南通市通州区五接农业机电管理站有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented fuel improves its ability to dissolve greasy substances such as oils while also being compatible for different types of fuels like alcohols or diesel engines without causing damage from these materials over time.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the performance or lifespan of cars made from methyl alcohol fuel without causing harmful effects like rusting metal components caused by exposure to it over time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1. Add 20Kg of α-methylstyrene dimer, 15Kg of maleic anhydride, 10Kg of dicumyl peroxide, and 30Kg of xylene into the reactor, and then heat it to 130°C under nitrogen atmosphere to make the reaction Keep for 4 hours, after cooling to room temperature, add 15Kg of stearyl alcohol, 10Kg of polyethylene glycol, 2Kg of p-toluenesulfonic acid, 5Kg of n-butanol, 15Kg of ethyl acetate, then raise the temperature to 140°C, keep the reaction for 8 hours, and cool to room temperature. Mixture I is obtained;

[0023] Step 2, the mixture I is first washed with a 1% mass percent sulfuric acid aqueous solution, then washed with a 1% mass percent NaOH aqueous solution, and then washed with water to obtain a mixture II;

[0024] Step 3: Add benzotriazole 5Kg, 2,6-tert-butyl-p-cresol 6Kg, hexamethylenetetramine 4Kg, ethanol 20Kg, propynyl alcohol 3Kg, trimellitate 4Kg to mixture II , Surfactant 3Kg, Combustion Accelerator 4Kg, stir evenly.

[0025] The polyethylene glycol refers...

Embodiment 2

[0028] Step 1. Add 30Kg of α-methylstyrene dimer, 20Kg of maleic anhydride, 15Kg of dicumyl peroxide, and 40Kg of xylene into the reactor, and then heat to 140°C under nitrogen atmosphere to make the reaction Keep for 6h, after cooling to room temperature, add 30Kg of stearyl alcohol, 30Kg of polyethylene glycol, 4Kg of p-toluenesulfonic acid, 8Kg of n-butanol, 20Kg of ethyl acetate, then raise the temperature to 150°C, keep the reaction for 12h, and cool to room temperature. Mixture I is obtained;

[0029] Step 2, the mixture I is first washed with a 3% aqueous sulfuric acid solution by mass percent, then washed with a 3% aqueous NaOH solution by mass percent, and then washed with water to obtain a mixture II;

[0030] Step 3: Add benzotriazole 10Kg, 2,6-tert-butyl-p-cresol 17Kg, hexamethylenetetramine 8Kg, ethanol 30Kg, propynyl alcohol 8Kg, trimellitate 8Kg to mixture II , Surfactant 8Kg, Combustion Accelerator 8Kg, stir evenly.

[0031] The polyethylene glycol refers to ...

Embodiment 3

[0034] Step 1. Add 25Kg of α-methylstyrene dimer, 16Kg of maleic anhydride, 13Kg of dicumyl peroxide, and 35Kg of xylene into the reactor, and then heat it to 135°C under nitrogen atmosphere to make the reaction Keep for 5h, after cooling to room temperature, add 20Kg of octadecyl alcohol, 20Kg of polyethylene glycol, 3Kg of p-toluenesulfonic acid, 7Kg of n-butanol, 17Kg of ethyl acetate, then raise the temperature to 145°C, keep the reaction for 10h, and cool to room temperature. Mixture I is obtained;

[0035] Step 2, the mixture I is first washed with a 2% aqueous sulfuric acid solution by mass percentage, then washed with a 2% aqueous NaOH solution by mass percentage, and then washed with water to obtain a mixture II;

[0036] Step 3: Add benzotriazole 7Kg, 2,6-tert-butyl-p-cresol 9Kg, hexamethylenetetramine 5Kg, ethanol 25Kg, propynyl alcohol 7Kg, trimellitate 5Kg to mixture II , 6Kg of surfactant, 6Kg of combustion accelerant, stir evenly.

[0037] The polyethylene gly...

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PUM

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Abstract

The invention provides a preparation method of a corrosion inhibitor of methanol gasoline, and belongs to the technical field of metal corrosion protection. The preparation method comprises steps as follows: alpha-methylstyrene dimer, maleic anhydride, dicumyl peroxide and dimethylbenzene are added into a reactor, and then, the mixture is heated in an atmosphere of nitrogen for reacting; after the mixture is cooled to the room temperature, octadecanol, polyethylene glycol, p-toluenesulfonic acid, n-butyl alcohol and ethyl acetate are added, the mixture is heated for reacting and then cooled to the room temperature, and a mixture I is obtained; the mixture I is washed with a sulfuric acid aqueous solution, then washed with an NaOH aqueous solution and finally washed with an aqueous solution, and a mixture II is obtained; and benzotriazole, 2, 6-tert-butyl-4-methyl phenol, hexamethylene tetramine, ethanol, propargyl alcohol, trimellitate, a surface active agent and a combustion improver are added into the mixture II and uniformly stirred, and the corrosion inhibitor is obtained. The provided methanol gasoline has good solubility with various oils, the additive amount is small, and the corrosion-resistant effect is superior to that of a similar product.

Description

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Claims

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Application Information

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Owner 南通市通州区五接农业机电管理站有限公司
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