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A kind of reductive borosulfate rust remover

A technology of sulfate ester and rust remover, applied in the field of rust removal, can solve the problems of increasing processing cost, easy to rust, affecting the strength of steel, etc., and achieves the effects of good rust removal and cleaning ability, convenient use, and accelerated rust removal speed.

Active Publication Date: 2020-09-04
镇江纳润特高新科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Materials such as ferrous metals and non-ferrous metals are prone to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal process of painting and bonding. necessary economic loss
[0003] The first generation of rust remover is a strong acid, which can chemically react with rust and metal oxides to form soluble salts, so as to achieve the purpose of rust removal. At the same time of rust removal, the acid can react with the base metal to release hydrogen. Hydrogen can generate pressure on rust and insoluble scale, which is beneficial to their peeling and reduction of high-valent iron, and accelerates the pickling process, but the traditional acid treatment method also has obvious defects: a large amount of hydrogen gas in the process The generation of hydrogen embrittlement will cause the steel to produce hydrogen embrittlement, which will cause the mechanical properties of the metal to decline and affect the strength of the steel itself; at the same time, it is easy to form acid mist, which will affect the health of the operator and corrode the surrounding equipment and environment; the consumption of acid is also large , increase the processing cost; this kind of acid will cause excessive corrosion of steel
In addition, the residues produced in large quantities need to be discharged frequently, which not only seriously corrodes industrial pipelines, but also pollutes the soil and the environment.
[0004] The second-generation rust remover is a chemical substance containing nitrogen and phosphorus. Although it can overcome the disadvantages of the first-generation rust remover, such as being harmful to the human body, producing acid mist, and corroding the substrate, it is easy to enter the water system and cause eutrophication.

Method used

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  • A kind of reductive borosulfate rust remover
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Examples

Experimental program
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Effect test

Embodiment 1

[0025] The application provides a borosulfate reductive rust remover, the preparation steps are as follows:

[0026] (1) Put 40 parts of nonylphenol into the reaction kettle, heat to 120°C, then slowly add 1 part of boric acid, and react for 120 minutes after the addition;

[0027] (2) After the reaction is completed, the temperature is lowered to 70°C, and 1 part of auxiliary agent propylene glycol is added, and the temperature is naturally lowered to normal temperature;

[0028] (3) Slowly add 0.5 parts of S under 10Pa vacuum 2 o 3 , stirring while adding, after the addition, the temperature was raised to 60°C, and the reaction was carried out for 120 minutes;

[0029] (4) After the reaction is completed, cool down to below 50°C, add 1 part of auxiliary agent propylene glycol, react for 80 minutes, and then naturally cool down to below 30°C;

[0030] (5) Add 2 parts of reducing agent sodium sulfite and stir evenly.

Embodiment 2

[0032] The application provides a borosulfate reductive rust remover, the preparation steps are as follows:

[0033] (1) Put 50 parts of nonylphenol into the reaction kettle, heat to 125°C, then slowly add 3 parts of boric acid, and react for 100 minutes after the addition;

[0034] (2) After the reaction is completed, the temperature is lowered to 70°C, 2 parts of the auxiliary agent diglycerin is added, and the temperature is naturally lowered to normal temperature;

[0035] (3) Slowly add 1.5 parts of SO under 5Pa vacuum 3 , stirring while adding, after the addition, the temperature was raised to 70°C, and the reaction was carried out for 80 minutes;

[0036] (4) After the reaction is completed, cool down to below 50°C, add 3 parts of auxiliary agent glycerin, react for 100 minutes, and then naturally cool down to below 30°C;

[0037] (5) Add 3 parts of reducing agent ferrous sulfate, stir evenly, and you are done.

Embodiment 3

[0039] The application provides a borosulfate reductive rust remover, the preparation steps are as follows:

[0040] (1) Put 65 parts of nonylphenol polyoxyethylene ether NP-4 into the reactor, heat to 130°C, then slowly add 5 parts of boric acid, and react for 90 minutes after the addition;

[0041] (2) After the reaction is completed, the temperature is lowered to 80° C., 3 parts of epoxy soybean oil are added as an auxiliary agent, and the temperature is naturally lowered to normal temperature;

[0042] (3) Slowly add 2.5 parts of S under 15Pa vacuum 2 o 3 , stirring while adding, after the addition, the temperature was raised to 60°C, and the reaction was carried out for 110 minutes;

[0043] (4) After the reaction is completed, cool down to below 50°C, add 4 parts of pentaerythritol as an auxiliary agent, react for 110 minutes, and then naturally cool down to below 30°C;

[0044] (5) Add 4 parts of reducing agent sodium sulfite and stir evenly.

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PUM

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Abstract

The invention provides a reductive boron sulfate rust remover. A preparation method comprises the steps that (1) 40-80 parts of nonyl phenol or nonylphenol polyoxyethylene ether is heated to 120-140 DEG C, then, 1-10 parts of boric acid are added, and reacting is conducted for 80-120 min; (2) the temperature is lowered to 70-80 DEG C, 1-5 parts of an assistant are added, and the temperature is naturally lowered to the normal temperature; (3) 0.5-4 parts of S2O3 or SO3 is slowly added under the vacuum condition, meanwhile, stirring is conducted, then, the temperature is increased to 60-70 DEG C, and reacting lasts for 80-120 min; (4) the temperature is lowered to 50 DEG C or below, 1-5 parts of the assistant are added, reacting is carried out for 80-120 min, and then, the temperature is naturally lowered to 30 DEG C or below; and (5) 2-6 parts of a reducing agent are added, and after uniform stirring, the rust remover is obtained. The reductive boron sulfate rust remover has the quick and thorough removal effect on oxide skins.

Description

technical field [0001] The invention relates to the technical field of rust removal, in particular to a reductive borosulfate rust remover. Background technique [0002] Materials such as ferrous metals and non-ferrous metals are prone to rust when placed outdoors or in the open air, which not only affects the appearance quality, but also affects the normal process of painting and bonding. Necessary economic loss. [0003] The first generation of rust remover is a strong acid, which can chemically react with rust and metal oxides to form soluble salts, so as to achieve the purpose of rust removal. At the same time of rust removal, the acid can react with the base metal to release hydrogen. Hydrogen can generate pressure on rust and insoluble scale, which is beneficial to their peeling and reduction of high-valent iron, and accelerates the pickling process, but the traditional acid treatment method also has obvious defects: a large amount of hydrogen gas in the process The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/08
CPCC23G1/08
Inventor 王永光宋小林宋烨桐
Owner 镇江纳润特高新科技发展有限公司