Green passivating agent for metal doors and windows

A technology of metal doors and windows and passivating agents, applied in organic chemistry, chemical instruments and methods, preparation of organic compounds, etc., can solve problems such as pollution and secondary pollution of the environment, achieve high use value, reduce personnel and the environment Hazard, effect of corrosion resistance reduction

Inactive Publication Date: 2018-10-16
界首市创新门窗有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chromate passivation treatment can significantly improve the corrosion resistance of aluminum and its alloy surface. At the same time, the passivation film has good adhesion to the coating and is low in cost, so it has been widely used. However, chromate passivation treatment The solution contains hexavalent chromium, which is extremely harmful to the human body and the environment. Not only will pollution occur during the treatment process, but the hexavalent chromium in the passivation film will also cause secondary pollution to the environment when the treated product is used or discarded in the future.

Method used

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  • Green passivating agent for metal doors and windows

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A green passivating agent for metal doors and windows, the green passivating agent contains 2-hydroxyl-3-butene-1-amine hydrochloride.

[0022] Further, the preparation method of the 2-hydroxy-3-butene-1-amine hydrochloride is:

[0023] (1) Add acrolein, trimethylsilyl cyanide and lithium perchlorate trihydrate successively in the reaction kettle, the molar ratio of acrolein, trimethylsilyl cyanide and lithium perchlorate trihydrate is 1:1.8:1.2, heat to 80°C, stirred for 2 hours at a speed of 150r / min, then added ethyl acetate with 6 times the mass of acrolein, stirred at a speed of 150r / min for 20min, and then filtered to obtain a filtrate, which was subjected to selective evaporation and drying. get intermediates;

[0024] (2) Add acetone 5 times its mass and lithium aluminum tetrahydrohydride 1.5 times its mass to the intermediate obtained above, heat to 70°C, stir at 150r / min for 2 hours, and then add 5% acetone mass Sodium sulfate and ethyl ether with 80% aceton...

Embodiment 2

[0033] A green passivating agent for metal doors and windows, the green passivating agent contains 2-hydroxyl-3-butene-1-amine hydrochloride.

[0034] Further, the preparation method of the 2-hydroxy-3-butene-1-amine hydrochloride is:

[0035] (1) Add acrolein, trimethylsilyl cyanide and lithium perchlorate trihydrate successively in the reaction kettle, the molar ratio of acrolein, trimethylsilyl cyanide and lithium perchlorate trihydrate is 1:1.8:1.2, heat to 80°C, stirred for 2 hours at a speed of 150r / min, then added ethyl acetate with 6 times the mass of acrolein, stirred at a speed of 150r / min for 20min, and then filtered to obtain a filtrate, which was subjected to selective evaporation and drying. get intermediates;

[0036] (2) Add acetone 5 times its mass and lithium aluminum tetrahydrohydride 1.5 times its mass to the intermediate obtained above, heat to 70°C, stir at 150r / min for 2 hours, and then add 5% acetone mass Sodium sulfate and ethyl ether with 80% aceton...

Embodiment 3

[0045] A green passivating agent for metal doors and windows, the green passivating agent contains 2-hydroxyl-3-butene-1-amine hydrochloride.

[0046] Further, the preparation method of the 2-hydroxy-3-butene-1-amine hydrochloride is:

[0047] (1) Add acrolein, trimethylsilyl cyanide and lithium perchlorate trihydrate successively in the reaction kettle, the molar ratio of acrolein, trimethylsilyl cyanide and lithium perchlorate trihydrate is 1:1.8:1.2, heat to 80°C, stirred for 2 hours at a speed of 150r / min, then added ethyl acetate with 6 times the mass of acrolein, stirred at a speed of 150r / min for 20min, and then filtered to obtain a filtrate, which was subjected to selective evaporation and drying. get intermediates;

[0048] (2) Add acetone 5 times its mass and lithium aluminum tetrahydrohydride 1.5 times its mass to the intermediate obtained above, heat to 70°C, stir at 150r / min for 2 hours, and then add 5% acetone mass Sodium sulfate and ethyl ether with 80% aceton...

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Abstract

The invention discloses a green passivating agent for metal doors and windows and relates to the technical field of treatment of the metal doors and windows. The green passivating agent contains 2-hydroxyl-3-butene-1-amine hydrochloride. Passivating liquid provided by the invention is green and safe; raw material sources are wide, the passivating speed is rapid, the efficiency is high and the quality of a passivating film is stable.

Description

technical field [0001] The invention belongs to the technical field of metal door and window treatment, and in particular relates to a green passivator for metal doors and windows. Background technique [0002] Metal doors and windows are an indispensable part of buildings. In order to prevent metal doors and windows from being corroded, people generally treat their surfaces. Chromate passivation treatment is a widely used method at present. Chromate passivation treatment can significantly improve the corrosion resistance of the surface of aluminum and its alloys. At the same time, the passivation film has good adhesion to the coating and is low in cost, so it has been widely used. However, chromate passivation treatment The solution contains hexavalent chromium, which is extremely harmful to the human body and the environment. Not only will pollution occur during the treatment process, but the hexavalent chromium in the passivation film will also cause secondary pollution t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C215/24C07C213/02C07C213/08C07C253/00C07C255/15C23F11/14
CPCC07C213/02C07C213/08C07C253/00C23F11/142C07C255/15C07C215/24
Inventor 赵慧
Owner 界首市创新门窗有限公司
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