Organic paint removing agent, preparation method and application in removing paint layer at surface of special equipment

A paint remover, organic technology, applied in the direction of coating, chemical paint/ink remover, etc., can solve the problems of toxicity, dichloromethane is volatile, and restricts wide use, so as to avoid high toxicity and volatile , The effect of long paint removal time

Inactive Publication Date: 2010-01-27
NANJING BOILER & PRESSURE VESSEL SUPERVISION & INSPECTION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the chemical paint stripping method, the paint stripping effect of the formula with dichloromethane as the main component is better, such as the dichloromethane-based paint strippers disclosed in Chinese patent CN1113926 and Chinese patent CN1492007, all have the advantages of fast paint stripping speed However, because dichloromethane is volatile and has certain toxicity, it greatly limits its wide use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 organic paint remover and preparation method thereof

[0024] 1. The organic paint remover is made from the following raw materials by weight percentage:

[0025] Dichloromethane 70%,

[0026] Formic acid 10%,

[0027] Phenol 8%,

[0028] Span80 (Span80) 4%,

[0029] Sodium Lauryl Sulfate (K-12) 5%,

[0030] Organic glass powder 1.5%,

[0031] Vaseline 1.5%.

[0032] 2. Preparation method: the preparation steps are as follows:

[0033] (1) First mix 70% dichloromethane and 10% formic acid, then heat 8% phenol to 45-55°C to melt and then add it to the mixture;

[0034] (2) Then add 4% Span 80 and 5% sodium lauryl sulfate (K12) into the above mixed solution respectively, stir and mix;

[0035] (3) Add 1.5% plexiglass powder, stir to make it dissolve in the mixed solution of step (2);

[0036] (4) Heat 1.5% vaseline and 1 / 2 of the above mixed solution to 35-45°C until they are completely dissolved;

[0037] (5) Finally, add the remaining 1 / 2 step (3)...

Embodiment 2

[0039] Embodiment 2 organic paint remover and preparation method thereof:

[0040] 1. The organic paint remover is made of the following raw materials according to the proportion by weight:

[0041] Dichloromethane 75%

[0042] Formic acid 8%

[0043] Phenol 6%

[0044] Span80 (Span80) 5%

[0045] Sodium Lauryl Sulfate (K-12) 3%

[0046] Plexiglass powder 1%

[0047] Paraffin 2%

[0048] 2. Preparation method: the preparation steps are as follows:

[0049] (1) First mix 75% of methylene chloride and 8% of formic acid, then heat 6% of phenol to 45-55°C to melt and then add it to the mixture;

[0050] (2) Then add 5% Span 80 and 3% sodium lauryl sulfate (K12) respectively into the above mixed solution, stir and mix;

[0051] (3) Add 1% plexiglass powder, stir to make it dissolve in the mixed solution of step (2);

[0052] (4) Heat 2% paraffin and 1 / 2 of the above mixed solution to 45-65°C until it is completely dissolved;

[0053] (5) Finally, add the remaining 1 / 2 of ...

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Abstract

The invention discloses an organic paint removing agent and a preparation method. The paint removing agent is prepared by dichloromethane, formic acid, phenol, Span 80, lauryl sodium sulfate, organic glass powder and a surface modifying agent in percentage by weight. The preparation method comprises the following steps: mixing the dichloromethane and the formic acid; after the phenol is heated to 45-55 DEG C till being melted, adding mixing liquid; then adding the Span 80 and the lauryl sodium sulfate into the mixed liquid to stir; adding the organic glass powder and dissolving the organic glass powder to the mixed liquid; adding the surface modifying agent into one second of mixed liquid and then heating the mixture to 35-65 DEG C together till the mixture is completely melted; then adding one second of residual mixed liquid. The organic paint removing agent has the characteristics of low poison, no corrosion, rapid paint removal and less environmental pollution and can be widely applied to remove the paint layer at the surface of special equipment.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to an organic paint remover and a preparation method which are used for removing the paint layer on the surface of special equipment and can meet the requirements of non-destructive testing. Background technique [0002] Special equipment refers to boilers, pressure vessels (including gas cylinders), pressure pipelines, elevators, hoisting machinery, passenger ropeways, and large-scale amusement facilities that involve life safety and are relatively dangerous. Due to the need to protect the equipment, the surface of the equipment is usually coated with paint. In the process of daily inspection and periodic inspection, the surface paint layer needs to be removed. The traditional method of mechanical grinding is large in pollution, low in efficiency, and great in damage to the equipment. How to remove the paint film efficiently and without damaging the equipment has become...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D9/04
Inventor 梁华业成张耀丰梁斌
Owner NANJING BOILER & PRESSURE VESSEL SUPERVISION & INSPECTION INST
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