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Environmentally friendly metal cleaner with anti-corrosion function

A technology of metal cleaning agent and cleaning main agent, which is applied in the field of cleaning agent, can solve problems such as complex process, environmental hazards, and metal surface damage, and achieve the effect of low corrosion and strong degreasing effect

Active Publication Date: 2016-07-06
北京科爱工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the metal cleaners on the market contain harmful chemical components such as strong acid, strong alkali, phosphate and aluminum salt. These chemical components will not only cause certain damage to the metal surface, but also cause certain harm to the environment. At the same time Due to the complex process, the cost is high

Method used

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  • Environmentally friendly metal cleaner with anti-corrosion function
  • Environmentally friendly metal cleaner with anti-corrosion function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation of embodiment 1 chloride 1-hydroxyethyl-3-hexadecyl imidazole

[0040] Mix 1.79 g of imidazole and 3.8 mL of hexadecane bromide (the molar ratio of substances is 2:1) in 35 mL of ethyl acetate, stir for 10 minutes with magnetic force and mix well. Pour the mixture into a polytetrafluoroethylene liner with a capacity of 60mL, seal the polytetrafluoroethylene liner into a stainless steel reactor, and put it into a digital oven, heat it from room temperature to 120°C for 16 hours, and then cool it naturally to room temperature. Then the mixture was filtered to take out the filtrate, washed several times with distilled water to remove the imidazole that did not participate in the reaction, and the solvent ethyl acetate was evaporated with a rotary evaporator, and the resulting product 1-hexadecyl imidazole was dried in a vacuum oven at 70°C for 12 hours to constant weight. Obtain pale yellow liquid, weigh the product, mix 2.9g of 1-hexadecyl imidazole and ...

Embodiment 2

[0041] Embodiment 2ω, the preparation of ω '-two (benzimidazol-2-yl) alkanes

[0042] Weigh 0.11 mol of o-phenylenediamine and 0.05 mol of fatty diacid respectively, thoroughly grind them in a mortar to make them evenly mixed, and transfer them to a three-necked flask. Add mixed acid, pass through nitrogen, and heat to reflux under mechanical stirring. TLC tracking and monitoring until the end of the reaction, about 10h, pour it into a 250mL beaker, let it stand for cooling, and adjust the pH=7 with concentrated ammonia water. Stand overnight at 4°C, filter and dry with suction, and recrystallize the crude product with methanol / water to obtain a pure product.

Embodiment 3

[0043] Embodiment 3: metal cleaning agent 1

[0044] Antifoaming agent tributyl phosphate 2g, cationic surfactant distearyl dimethyl ammonium chloride 8g, anionic surfactant sodium tosyl sulfonate 6g, as nonionic surfactant trade name Silicon surfactant 12g, sodium phosphate 20g and sodium silicate 10g, 1-hydroxyethyl-3-hexadecylimidazole chloride 2g prepared in Example 1, ω prepared in Example 2, ω'-bis( Dissolve 2 g of benzimidazol-2-yl)alkane in deionized water and stir for about 30 minutes to obtain the product.

[0045] Comparative Example 1 Metal cleaning agent 2

[0046] Antifoaming agent tributyl phosphate 2g, cationic surfactant distearyl dimethyl ammonium chloride 8g, anionic surfactant sodium tosyl sulfonate 6g, as nonionic surfactant trade name 12g of silicon surfactant, 20g of sodium phosphate and 10g of sodium silicate, 4g of 1-hydroxyethyl-3-hexadecylimidazole chloride prepared in Example 1 were dissolved in deionized water and stirred for about 30 minutes t...

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PUM

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Abstract

The invention provides an environment-friendly metal cleaning agent with anti-corrosion function, which comprises: 0.3%-5% of defoaming agent, 1%-15% of cationic surfactant, 1%-10% of anionic surfactant, 3% to 15% of ionic surfactant, 20% to 40% of main cleaning agent, 2% to 5% of corrosion inhibitor and the balance of deionized water. The corrosion inhibitor is composed of chlorinated 1-hydroxyethyl-3- Hexadecyl imidazole and ω, ω'-bis(benzimidazol-2-yl)alkane. The metal cleaning agent provided by the invention has the advantages of low alkali, low foam and environmental protection, has a strong degreasing effect at a relatively low temperature, and has very low corrosiveness.

Description

technical field [0001] The invention relates to the technical field of cleaning agents, in particular to an environment-friendly metal cleaning agent with anti-corrosion function. Background technique [0002] In the maintenance and repair of machining, mechanical equipment, automobiles, etc., diesel oil, kerosene or gasoline are mostly used as cleaning fluids to clean parts. This not only wastes energy, but also has potential unsafe factors. If you are not careful, it may lead to a fire. In recent years, a new type of metal cleaning agent has gradually been widely used. It can replace diesel, kerosene and gasoline to clean parts, and it is cheap and safe to use. It is very suitable for mechanized cleaning operations. It can wash metal without rust spots. [0003] At present, most of the metal cleaners on the market contain harmful chemical components such as strong acid, strong alkali, phosphate and aluminum salt. These chemical components will not only cause certain dama...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/26
Inventor 孙霞
Owner 北京科爱工贸有限公司
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