Efficient metal paint remover and preparation method thereof

A technology of paint remover and preparation method, which is applied in the direction of chemical paint/ink remover, coating, etc., can solve the problems such as the limitation of applicable surface, and achieve the effect of small solvent volatilization, excellent corrosion inhibition effect and fast speed

Inactive Publication Date: 2012-12-12
自贡鸿鹤化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these corrosion inhibitors have a certain corrosion inhibition effect, their application is limited.

Method used

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  • Efficient metal paint remover and preparation method thereof
  • Efficient metal paint remover and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 50kg of dichloromethane, 15kg of phenol, 2kg of paraffin, 5kg of benzyl alcohol, 8kg of formic acid, 1kg of methylcellulose, emulsifier (Tween-80 0.65kg, Span-80 1.35kg), corrosion inhibitor LAN-826 0.008kg, water 17kg.

[0018] Preparation method:

[0019] (1) Add paraffin, water, emulsifier, and methylcellulose into the reaction kettle, and stir and emulsify at 60°C for 0.5 hours;

[0020] (2) Then add benzyl alcohol, formic acid and corrosion inhibitor, maintain the temperature at 50°C, and stir for 0.5 hours;

[0021] (3) Finally, add the mixture of dichloromethane and phenol, maintain the temperature at 40°C, stir for 0.8 hours, and mix well;

[0022] (4) Cool to room temperature to obtain a paste-like high-efficiency metal paint remover.

[0023] Effect test: The prepared high-efficiency metal paint remover is uniformly coated on the Boeing aircraft paint layer model (aluminum alloy substrate) into a block of 100mm×200mm, with a thickness of about 0.25mm;...

Embodiment 2

[0025] Weigh 55kg of dichloromethane, 10kg of phenol, 3kg of paraffin, 8kg of benzyl alcohol, 9kg of acetic acid, 2kg of methylcellulose, emulsifier (Tween-80 0.95kg, Span-80 2.05kg), corrosion inhibitor LAN-826 0.006kg, water 10kg.

[0026] Preparation method:

[0027] (1) Add paraffin, water, emulsifier, and methylcellulose into the reaction kettle, and stir and emulsify at 70°C for 0.4 hours;

[0028] (2) Then add benzyl alcohol, acetic acid and corrosion inhibitor, maintain the temperature at 70°C, and stir for 0.3 hours;

[0029] (3) Finally, add the mixture of dichloromethane and phenol, maintain the temperature at 40°C, stir for 0.5 hours, and mix well;

[0030] (4) Cool to room temperature to obtain a paste-like high-efficiency metal paint remover.

[0031] Effect test: The configured high-efficiency metal paint remover is evenly coated on the paint layer of a certain type of Volkswagen car door (carbon steel substrate) into a block of 100mm×200mm, with a thickness ...

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Abstract

The present invention discloses a paint remover for a metal surface. The paint remover is characterized by comprising the following components, by weight, 30-70% of dichloromethane, 5-25% of phenol, 1-5% of paraffin, 5-25% of benzyl alcohol, 2-10% of an organic acid, 1-6% of methyl cellulose, 0.5-3% of an emulsifier, 0.3-1% of a corrosion inhibitor LAN-826, and 10-30% of water. The metal paint remover of the present invention has characteristics of low solvent evaporation, good paint removing effect, rapidness, low use cost, and no corrosion on metal substrates, and can be widely applicable for paint layer removing of surfaces of carbon steel, stainless steel, copper, aluminum and other metal substrates.

Description

technical field [0001] The invention relates to a paint remover for metal surfaces and a preparation method thereof, belonging to the field of fine chemical production. Background technique [0002] The surface of modern industrial products is usually coated with a layer of paint film, which can not only strengthen the protection of objects, but also play an aesthetic role. After a long period of use, due to the influence of climate and environmental conditions, the paint film on the surface of the article will gradually age or be damaged and fall off. Therefore, it is necessary to remove the old paint layer, renovate the protective decorative paint layer on the surface, and recoat it. Organic solvent-based paint remover is a relatively common paint removal method now. It relies on the principle of organic matter swelling and relies on the solvent to penetrate into the paint film to make it swell, reducing the adhesion between the paint film and the substrate. The synergist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D9/04
Inventor 赵正东颜杰颜超黄竞唐楷刘汉森吕运涛杜勇军陈军
Owner 自贡鸿鹤化工股份有限公司
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