Long-acting water-based metal rust inhibitor

A water-based rust inhibitor, long-term technology, applied in the direction of metal material coating process, etc., can solve problems affecting product cleanliness, harm, rust inhibitor toxicity, etc., to achieve product and raw material safety, good stability, good The effect of the protective effect

Inactive Publication Date: 2009-09-16
CHANGCHUN XINXING INST OF FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although its anti-rust effect is good and its price is low, it has been gradually restricted over the years: mainly because this type of anti-rust agent has great toxicity, and nitrite is a strong carcinogen, which is harmful to the human body and the environment. big hazard
In addition, for precision mechanical products, due to the possibility of crystallization of inorganic salts on the metal surface, especially in the gaps, the cleanliness of the product will be affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] Carry out the preparation of antirust agent by following formula (W%):

[0016] Phytic acid 5.0

[0017] Triethanolamine 7.0

[0018] Borax 6.0

[0019] water 82.0

[0020] When preparing, mix the above raw materials at room temperature and stir evenly. The product is light yellow viscous liquid. Stored at 25-30°C for 6 months, no stratification or precipitation. The original color and luster of the metal surface is maintained after the anti-rust treatment of the carbon steel plate, and there is no change in the damp heat test cycle of 500h.

example 2

[0022] Phytic acid 9.0

[0023] Triethanolamine 13.0

[0024] Borax 5.0

[0025] water 73.0

[0026] The preparation is the same as the above example. The product is light yellow viscous liquid. Placed at 35-50°C for 3 months, no stratification or precipitation. The original color of the metal surface is maintained after the anti-rust treatment of the carbon steel plate, and there is no change in the damp heat test cycle for 5 weeks.

example 3

[0028] Carry out the preparation of antirust agent by following formula (W%):

[0029] Phytic acid 9.0

[0030] Triethanolamine 5.0

[0031] Diethanolamine 5.0

[0032] Borax 4.5

[0033] water 76.5

[0034] The preparation is the same as the above example. The product is light yellow viscous liquid. Placed at 35-50°C for 4 months, no stratification, no precipitation. The original color of the metal surface is maintained after the anti-rust treatment of the carbon steel plate, and there is no change in the damp heat test cycle for 5 weeks.

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PUM

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Abstract

The invention relates to a long-acting water-based metal rust inhibitor which consists of phytic acid, ethanolamine, boric class and acid amide; the raw material is non-toxic, harmless, and does not pollute environment; and the rust inhibitor is characterized by long antirust cycle, good stability, no delamination, and no precipitation.

Description

technical field [0001] The invention relates to the field of chemical treatment for antirust on the surface of metal materials. Background technique [0002] For the current antirust treatment of metal materials (especially steel) surfaces, a large number of water-based antirust agents are compounded with nitrite as the main agent. Although its anti-rust effect is good and its price is low, it has been gradually restricted over the years: mainly because this type of anti-rust agent has great toxicity, and nitrite is a strong carcinogen, which is harmful to the human body and the environment. Great harm. In addition, for precision mechanical products, due to the possibility of crystallization of inorganic salts on the metal surface, especially in the gaps, the cleanliness of the product will be affected. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the present invention aims to provide a water-based long-acting metal rust inhibitor that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/68
Inventor 车吉泰金文镐
Owner CHANGCHUN XINXING INST OF FINE CHEM
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