Environment-friendly neutral rust remover

A rust remover and neutral technology, applied in the direction of surface active detergent composition, detergent composition, detergent compounding agent, etc., can solve the problems of cumbersome operation, environmental and personnel health pollution, rust return, etc., and achieve simplification The effect of operating the technological process, reducing pollutant emissions, and changing the principle of rust removal

Inactive Publication Date: 2019-01-04
VCI ANTIRUST NEW MATERIALS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing rust remover is harmful to the metal base material, which is easy to cause hydrogen embrittlement and rust return
The workpiece needs to be properly cleaned before the product is used; hydrogen gas is generated during use, causing hidden safety hazards in the workshop; after use, multiple proc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of embodiment 1 environment-friendly neutral rust remover

[0022] Raw material composition:

[0023] 10 parts of benzoic acid, 20 parts of N-hydroxyethylethylamine triacetic acid, 10 parts of mercaptobenzothiazole, 30 parts of alkali-resistant penetrant OEP-7030 parts, 30 parts of triethanolamine, 10 parts of polyoxyethylene alkylphenyl ether, 100 parts of deionized water.

[0024] Preparation:

[0025] Add deionized water, polyoxyethylene alkyl phenyl ether, benzoic acid and mercaptobenzothiazole in sequence to a reactor equipped with a stirring device, stir at 500W ultrasonically for 20 minutes to fully dissolve it, and continue adding N- Hydroxyethylethylamine triacetic acid, alkali-resistant penetrating agent OEP-70 and triethanolamine, after supplementing with water, 500W ultrasonic stirring for 30min, a clear environment-friendly neutral rust remover solution is obtained.

Embodiment 2

[0026] The preparation of embodiment 2 environment-friendly neutral rust remover

[0027] Raw material composition:

[0028] 15 parts of citric acid, 40 parts of nitrilotriacetic acid, 30 parts of dicyclohexyl ammonium nitrite, 60 parts of high temperature penetrant JFC-M, 70 parts of triethanolamine, 20 parts of octylphenol polyoxyethylene ether, deionized water 150 servings.

[0029] Preparation:

[0030] Add deionized water, octylphenol polyoxyethylene ether, citric acid and dicyclohexyl ammonium nitrite sequentially into the reactor equipped with a stirring device, stir 700W ultrasonically for 20 minutes to fully dissolve, and continue to add after the solution is clarified Nitrilotriacetic acid, high temperature penetrating agent JFC-M and triethanolamine, after supplementing with water, 700W ultrasonic stirring for 60min, a clear environment-friendly neutral rust remover solution is obtained.

Embodiment 3

[0031] The preparation of embodiment 3 environment-friendly neutral rust remover

[0032] Raw material composition:

[0033] 12 parts of oxalic acid, 25 parts of sodium hexametaphosphate, 15 parts of stearylamine, 40 parts of rapid penetration agent T, 40 parts of triethanolamine, 12 parts of fatty acid methyl ester ethoxylate, 120 parts of deionized water.

[0034] Preparation:

[0035] Add deionized water, fatty acid methyl ester ethoxylate, oxalic acid and octadecylamine in sequence in a reactor equipped with a stirring device, and stir 600W ultrasonically for 20 minutes to fully dissolve it. After the solution is clarified, continue to add sodium hexametaphosphate, Fast penetrating agent T and triethanolamine, after making up water, 600W ultrasonic stirring for 40min, a clear environment-friendly neutral rust remover solution can be obtained.

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PUM

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Abstract

The invention provides an environment-friendly neutral rust remover. The environment-friendly neutral rust remover is prepared by, by weight, 10-15 parts of organic acid, 20-40 parts of chelating agent, 10-30 parts of corrosion inhibitor, 30-60 parts of penetrating agent, 30-70 parts of triethanolamine, 10-20 parts of nonionic surfactant and 100-150 parts of deionized water. The environment-friendly neutral rust remover has the advantages that product precision after rust removing is increased, operation process flow is simplified, easy rust removing is achieved, harm to the health of operation staff during use is reduced, pollutant emission is reduced, energy conservation and environment protection are achieved, and fast rust removing is achieved.

Description

technical field [0001] The invention relates to the technical field of rust removers, in particular to an environment-friendly neutral rust remover. Background technique [0002] Most of the existing rust removers on the market are acidic. The principle of rust removal is to peel off the rust substances after the redox reaction between the acidic substances and the base material, so as to achieve the rust removal effect. Existing rust removers are harmful to metal substrates, and are likely to cause hydrogen embrittlement and rust return. The workpiece needs to be properly cleaned before the product is used; hydrogen gas is generated during use, causing hidden safety hazards in the workshop; after use, multiple processes such as alkali washing and rinsing are required, the operation is cumbersome, and it will cause pollution and harm to the environment and human health. Therefore, there is an urgent need to develop a novel rust remover that can meet the basic rust removal r...

Claims

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Application Information

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IPC IPC(8): C11D1/825C11D1/83C11D3/20C11D3/33C11D3/34C11D3/06C11D3/36C11D3/30C11D3/60C23G1/26
CPCC11D1/008C11D1/28C11D1/667C11D1/72C11D1/74C11D1/825C11D1/83C11D3/0073C11D3/06C11D3/2079C11D3/2082C11D3/2086C11D3/30C11D3/33C11D3/349C11D3/36C11D3/365C23G1/26
Inventor 谭卫锋
Owner VCI ANTIRUST NEW MATERIALS SHANGHAI
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