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Coating take-free-agent composition and coating take-free method using same

A composition and coating technology, which is applied in the direction of surface coating liquid devices, coatings, special surfaces, etc., can solve the problems of poor cleaning effect and low efficiency of "overspray" paint cleaning process, and achieve convenient cleaning and easy cleaning. Salvage cleaning, strong detackification effect

Inactive Publication Date: 2010-11-17
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of low efficiency and poor cleaning effect of the prior art "overspray" paint cleaning process, and provide a paint detackifier combination that can quickly and effectively eliminate the viscosity of "overspray" paint so that the paint is easy to clean thing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This example is used to illustrate the preparation method of the paint detackifier composition provided by the present invention and the paint removal method using the detackifier composition.

[0026] Add melamine and propionaldehyde in a round-bottomed flask with a condensing tube at a molar ratio of 7:1, and add deionized water 12 times the total weight of melamine and propionaldehyde at the same time, stir and control the reaction temperature to 40°C, and react After 4 hours, the reaction system turned into a clear and transparent viscous liquid, and the pH value of the system was adjusted to 4.0 with sodium hydroxide, and then the reaction was continued at 50°C for 5 hours, and the resulting clear and transparent viscous liquid was the paint disinfectant. Adhesive composition.

[0027] Add 40 kilograms of the above-mentioned paint detackifier composition to the circulating water tank of the spray booth equipped with 40 tons of circulating water, and after the circu...

Embodiment 2

[0029] This example is used to illustrate the preparation method of the paint detackifier composition provided by the present invention and the paint removal method using the detackifier composition.

[0030] Add aminoacetic acid and formaldehyde in a round-bottomed flask with a condensing tube at a molar ratio of 3:1, and add deionized water twice the total weight of aminoacetic acid and formaldehyde at the same time, stir and control the reaction temperature to 70°C. After 7 hours, the reaction system became a clear and transparent viscous liquid, and the pH value of the system was adjusted to 2.0 with sodium bicarbonate, and then the reaction was continued at 75° C. for 2 hours, and the resulting clear and transparent viscous liquid was the paint disinfectant. Adhesive composition.

[0031] Add 80 kg of the above composition into the circulating water tank of the spray booth equipped with 40 tons of circulating water. After the circulating water is turned on for 15 minutes,...

Embodiment 3

[0033] This example is used to illustrate the preparation method of the paint detackifier composition provided by the present invention and the paint removal method using the detackifier composition.

[0034] Add urea and acetaldehyde in a round-bottomed flask with a condensing tube at a molar ratio of 10:1, and add deionized water 20 times the total weight of urea and acetaldehyde at the same time, stir and control the reaction temperature to 40°C. After 5 hours, the reaction system becomes a clear and transparent viscous liquid. Use ammonium carbonate to adjust the pH value of the system to 6.0, and then allow the reaction to continue for 7 hours at 20°C. The resulting clear and transparent viscous liquid is the coating. agent composition.

[0035] Add 60 kg of the above composition into the circulating water tank of the spray booth equipped with 40 tons of circulating water. After the circulating water is turned on for 10 minutes, the detackifier and the circulating water a...

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PUM

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Abstract

One kind of dope eliminating adhesive compounds, the related eliminating adhesive compound contains the organic azotic compound including the -NH- group and the product of reacting with the aldehyde , the Mol ratio of the organic azotic compound including - NH- group and the aldehyde is not less than 1, the reactive temperature is 20-100degree C. The dope eliminating adhesive compound provided bythe invention can make above 90% dopes eliminate the glutinosity in 0.5-30 minutes, which improves the efficiency of cleaning up dopes.

Description

technical field [0001] The invention relates to a coating detackifying agent composition and a coating detackifying method using the composition. Background technique [0002] Various oily paints used in the existing coating process such as the automobile coating industry and the shell coating process of mechanical and electronic products usually have a large part that cannot be applied to the coated workpiece (such as the above-mentioned automotive coating industry) , Mechanical and electronic product shells) become "overspray" paint. The amount of "overspray" is usually as high as 30-40% by weight. Because these paints contain a large amount of volatile organic solvents that are harmful to human health, they need to be cleaned up in time. Since these "overspray" paints fall on the ground and are difficult to clean up, this "overspray" paint is often dropped into circulating water to take away the organic solvents in the paint. This circulation system usually includes in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/00B05D5/00
Inventor 谢守德陈梁宫清
Owner BYD CO LTD
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