Multifunctional antirust corrosion-inhibiting agent

A corrosion inhibitor and multi-functional technology, applied in the field of metal surface treatment agents, can solve problems such as single function, and achieve the effect of enhancing paint adhesion, excellent corrosion inhibition function, and preventing metal over-corrosion.

Inactive Publication Date: 2016-06-29
HUNAN JINYU ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution has a single function and does not have anti-rust function at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Preparation of metal corrosion inhibitor:

[0029] 1) Amidation reaction: put oleic acid into a reactor equipped with a stirrer and a distillation condensing device, after heating and melting, add diethylenetriamine according to the molar ratio of oleic acid and diethylenetriamine at 1:1, and raise the temperature to 190°C React for 9 hours, then lower the temperature to 75°C, and react for 2 hours.

[0030] 2) Quaternization reaction: heat and melt the amidated product obtained in the previous step in a reactor, add 30% aqueous chloroacetic acid solution according to the molar ratio of oleic acid to chloroacetic acid at 1:1.2, and adjust the pH value to 8. Raise the temperature to 85°C for 6 hours. Wherein the 30% chloroacetic acid aqueous solution is 30g chloroacetic acid+70g water, and the total weight is 100g, which is prepared by mixing.

[0031] 3) Substitution reaction: put the quaternized product obtained in the previous step into a reaction vessel, and whe...

Embodiment 2

[0040] 1. Preparation of metal corrosion inhibitor:

[0041] 1) Amidation reaction: put oleic acid into a reactor with a stirrer and a distillation condensing device, heat and melt, add diethylenetriamine according to the molar ratio of oleic acid and diethylenetriamine at 1:1, and heat up to 200°C React for 9 hours, then lower the temperature to 75°C, and react for 2 hours.

[0042] 2) Quaternization reaction: heat and melt the amidated product obtained in the previous step in a reactor, add 30% aqueous chloroacetic acid solution according to the molar ratio of oleic acid to chloroacetic acid at 1:1.2, and adjust the pH value to 8. Raise the temperature to 90°C for 6 hours. Wherein the 30% chloroacetic acid aqueous solution is 30g chloroacetic acid+70g water, and the total weight is 100g, which is prepared by mixing.

[0043] 3) Substitution reaction: put the quaternized product obtained in the previous step into a reaction vessel, and when the temperature rises to 70°C, qu...

Embodiment 3

[0052] 1. Preparation of metal corrosion inhibitor:

[0053] 1) Amidation reaction: put oleic acid into a reactor with a stirrer and a distillation condensing device, heat and melt, add diethylenetriamine according to the molar ratio of oleic acid and diethylenetriamine at 1:1, and raise the temperature to 205°C React for 9 hours, then lower the temperature to 75°C, and react for 2 hours.

[0054] 2) Quaternization reaction: heat and melt the amidated product obtained in the previous step in a reactor, add 30% aqueous chloroacetic acid solution according to the molar ratio of oleic acid to chloroacetic acid at 1:1.2, and adjust the pH value to 9. Raise the temperature to 88°C for 6 hours. Wherein the 30% chloroacetic acid aqueous solution is 30g chloroacetic acid+70g water, and the total weight is 100g, which is prepared by mixing.

[0055] 3) Substitution reaction: put the quaternized product obtained in the previous step into a reaction vessel, and when the temperature ris...

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PUM

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Abstract

The present invention relates to a multifunctional preparation for rust prevention and corrosion inhibition, which is prepared by the following method: 1) first add 597g of water into a 1000ml beaker, then add 217g of metal corrosion inhibitor, and stir for 3-4 hours at room temperature; 2) add 83g of borate coupling agent, stirred at room temperature for 1-1.5 hours; 3) Finally, 103g of titanate coupling agent was added, stirred for 2-3 hours to obtain the antirust and corrosion inhibitor. The antirust performance of the present invention is carried out according to the antirust test standard, and there is no rust on the inner metal surface within 24 hours, and there is no change on the surface. After using the present invention, the paint adhesion is significantly enhanced. According to the cross-cut test standard of GB / T 9286-1998 paint and varnish paint film, the paint film adhesion grade is 0 grade. The invention has excellent corrosion inhibition function, and the pure hydrochloric acid is added in a ratio of 0.3-0.5%, which can effectively prevent metal over-corrosion.

Description

technical field [0001] The invention relates to a metal surface treatment agent, in particular to a multifunctional agent for rust prevention and corrosion inhibition. Background technique [0002] General antirust agents only have the function of antirust, corrosion inhibitors only have the function of corrosion inhibition, and the adhesion of paint after using ordinary antirust agents is always not up to standard. [0003] For example, the publication number CN103556157B discloses a water-based antirust agent, which is prepared from components in parts by weight: 40-50 parts of 1-hydroxybenzotriazole, 35 parts of 1,2-diethoxysilyl ethane 42 parts, 5-10 parts of phytic acid ester, 5-8 parts of triethylamine, 1-4 parts of sodium acetate, 0.02-1 part of oxalic acid. On the basis of ensuring the cleanness of the water-based anti-rust agent itself, the solution has a better anti-rust effect than the existing water-based anti-rust agent, is more stable, and has a longer anti-ru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/14
CPCC23F11/146
Inventor 桂成方桂林刘春花
Owner HUNAN JINYU ENVIRONMENTAL PROTECTION TECH CO LTD
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