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Environmental protection type metal detergency liquid

A decontamination liquid and metal technology, applied in the field of cleaning agents, can solve the problems of environmental hazards, complex processes, high cost, and achieve strong degreasing effect and low corrosive effect.

Active Publication Date: 2014-02-26
上海德润宝特种润滑剂有限公司
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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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  • Environmental protection type metal detergency liquid
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preparation example Construction

[0035] The preparation method of described gemini cation imidazoline quaternary ammonium salt is specifically:

[0036] The first step, get 34.8g oleic acid and 15.3g diethylenetriamine, 0.2g aluminum sesquioxide catalyst and put into the there-necked flask that thermometer, reflux condenser and water separator are housed, add water-carrying agent xylene simultaneously 40ml, using 140°C, 170°C, 220°C stepwise heating method, dehydration until no more water is formed, then reduce to 140°C for vacuum distillation, remove xylene, generate amide and cyclize to obtain imidazoline intermediate;

[0037] In the second step, add the imidazoline intermediate and benzyl chloride into a three-necked flask at a molar ratio of 1:1, install a condenser tube and a thermometer, stir and heat up to 90°C to 110°C for 4 hours, and then add 4ml of epichlorohydrin , keep the temperature constant, continue to react for 5h, cool to room temperature, get the crude product, recrystallize 5 times with ...

Embodiment 1

[0043] The preparation of embodiment 1 gemini cation imidazoline quaternary ammonium salt

[0044] Get 34.8g oleic acid and 15.3g diethylenetriamine, 0.2g aluminum sesquioxide catalyst and put into the three-necked flask that thermometer, reflux condenser and water separator are housed, add water-carrying agent xylene 40ml simultaneously, adopt 140 ℃, 170°C, 220°C stepwise heating method, dehydration until no more water is generated, reduce to 140°C for vacuum distillation, remove xylene, generate amides and cyclize to obtain imidazoline intermediates; imidazoline intermediates Add benzyl chloride to a three-necked flask at a molar ratio of 1:1, install a condenser tube and a thermometer, stir and raise the temperature to 90°C-110°C for 4 hours, then add 4ml of epichlorohydrin, keep the temperature constant, and continue the reaction for 5 hours , cooled to room temperature to obtain a crude product, which was recrystallized five times with acetone / isopropanol, and dried in va...

Embodiment 2

[0045] Embodiment 2O', the preparation of O'-diphenyldithiophosphoric acid-N,N-diethylamine

[0046] Add 22.2g of phosphorus pentasulfide (0.1mol) and 37.6g of phenol (0.4mol) into a 250mL three-necked flask, and add 70mL of toluene as a solvent; while stirring, gradually raise the temperature to about 100°C and react for 45min; then raise the temperature until reflux, reflux 3h, the solid gradually disappeared during the reaction; the solution was slightly cold, boiled with a small amount of activated carbon to decolorize, filtered while it was hot, and the filtrate was cooled to room temperature; the obtained filtrate was transferred to a beaker, cooled in a water bath, and 22 mL of diethylamine was added drop by drop under stirring (0.2mol), the reaction system emits a large amount of heat, and the color of the liquid gradually becomes orange-red. When stirred rapidly with a glass rod, precipitation occurs, and it is left standing overnight at room temperature; filtered unde...

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Abstract

The present invention provides an environmental protection type metal detergency liquid with an anti-corrosion function. The environmental protection type metal detergency liquid comprises: 0.3-5% of an antifoaming agent, 1-15% of a cation surfactant, 1-10% of an anion surfactant, 3-15% of a nonionic surfactant, 20-40% of a main cleaning agent, 2-5% of a corrosion inhibitor and the balance of deionized water, wherein the corrosion inhibitor comprises a gemini cation imidazoline quaternary ammonium salt and O',O'-diphenyl dithiophosphonic acid-N,N-diethylamine. The environmental protection type metal detergency liquid is an efficient metal cleaning agent with characteristics of low alkali, low foaming, environmental protection, strong oil removing effect at a low temperature, and low corrosion.

Description

technical field [0001] The invention relates to the technical field of cleaning agents, in particular to an environment-friendly metal decontamination liquid 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 cert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/26
Inventor 孙霞
Owner 上海德润宝特种润滑剂有限公司
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