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Green and environment-friendly water-based antirust agent and preparation method thereof

A water-based anti-rust agent, green and environmentally friendly technology, applied in the production field of water-based anti-rust agents, can solve the problems of high cost, serious pollution, poor anti-rust effect, etc., achieve good environmental sanitation, reduce usage, and shorten the service life long effect

Active Publication Date: 2016-04-27
NINGBO LANRUN ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the shortcomings of current water-soluble anti-rust agents such as poor anti-rust effect, containing toxic substances such as nitrite, high cost, and serious pollution, the process of the present invention uses triethanolamine, sebacic acid, and lauric acid as main raw materials. Developed a production process of a green and environment-friendly water-based antirust agent

Method used

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  • Green and environment-friendly water-based antirust agent and preparation method thereof
  • Green and environment-friendly water-based antirust agent and preparation method thereof

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preparation example Construction

[0023] The preparation method of the green and environment-friendly water-based antirust agent of the present invention, the raw materials include sebacic acid, lauric acid, triethanolamine, monoisopropanolamine, EDTA disodium salt, borax, bactericide, and benzotriazole components, Concrete reaction steps are as follows:

[0024] Step 1: Add sebacic acid, lauric acid, and triethanolamine into the esterification reactor at a mass ratio of 3:2:10, start stirring, heat the mixture until the temperature is 75-85°C and keep it warm, and react for about 1.5 hours Afterwards, the mixture reacts completely and turns into a light yellow to reddish brown transparent viscous liquid, that is, the antirust agent monomer; dibasic acid and triethanolamine account for 27%-38% of the total preparation content;

[0025] Step 2: Control the temperature of the antirust agent monomer described in step 1 at 75-80°C, add 75% of the total weight of the required water, and stir for 0.5h to dissolve th...

Embodiment 1

[0031] Embodiment 1 produces green environment-friendly type water-based antirust agent

[0032] Step A: Add 30kg of sebacic acid, 20kg of lauric acid, and 100kg of triethanolamine into the esterification reaction kettle in sequence, start stirring, heat the mixture until the temperature is 75-85°C and keep it warm. After about 1.5 hours of reaction, the mixture is completely reacted as Light yellow to reddish-brown transparent viscous liquid is the rust inhibitor monomer; dibasic acid and triethanolamine account for 35% of the total preparation content;

[0033] Step B: Control the temperature of the antirust agent monomer described in step A at 75-80°C, add 75% of the total weight of the required water, that is, 190.278kg, and stir for 0.5h, so that the antirust agent monomer is evenly dissolved in the water; Water is tap water, and the total amount accounts for 59.2% of the total preparation content;

[0034] Step C: Add 4.3 kg of monoisopropanolamine to the mixed solution...

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Abstract

The invention discloses a preparation method for a green and environment-friendly water-based antirust agent. The adopted raw materials comprise the following ingredients: sebacic acid, dodecanedioic acid, triethanolamine, water, monoisopropanolamine, EDTA disodium salt, borax, fungicide and benzotriazole; and the relationship of the weight proportions of the ingredients is as follows: the sebacic acid, dodecanedioic acid and triethanolamine occupy 27-38 parts by weight totally; the water occupies 45-60 parts; the monoisopropanolamine occupies 1.0-1.5 parts; the EDTA disodium salt occupies 0.1-0.3 parts; the borax occupies 1.8-2.4 parts; the fungicide occupies 1-3 parts; and the benzotriazole occupies 0.1-1 parts. According to the green and environment-friendly water-based antirust agent produced by the preparation method disclosed by the invention, on one hand, a usage amount of mineral oil is reduced, and the advantages of high environmental health, long use period and the like during use are achieved; on the other hand, the green and environment-friendly water-based antirust agent produced by the process disclosed by the invention is free from heavy metals and other harmful substances, non-irritant to the skin, and of important significance to environmental protection.

Description

technical field [0001] The invention relates to the production field of water-based antirust agents, in particular, the invention relates to a green and environment-friendly water-based antirust agent and a preparation method thereof. Background technique [0002] Water-based antirust agents are widely used in metal surface antirust treatment. In the process of production, storage and transportation, if the steel is not treated with anti-rust treatment, it will rust in a short period of time, which will have a negative impact on the appearance and performance of the finished steel, and if the corrosion is serious, it will even be scrapped. The rusting of iron and steel has caused huge losses to the national economy. The amount of steel scrapped due to rusting in the world reaches 10 million tons every year. In 2000, the economic loss caused by corrosion in my country reached 500 billion yuan. has an important role. Most of the metal water-based anti-rust liquids used in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/00
Inventor 吴顺洲
Owner NINGBO LANRUN ENERGY TECH
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