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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, low VOC) residue effect

Inactive Publication Date: 2007-11-14
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] In a round-bottom flask with a condenser, add melamine and propionaldehyde at a molar ratio of 7:1. At the same time, add 12 times the total weight of melamine and propionaldehyde with deionized water, stir and control the reaction temperature to 40°C. After 4 hours, the reaction system turned into a clear and transparent viscous liquid. The pH of the system was adjusted to 4.0 with sodium hydroxide, and then the reaction was allowed to continue at 50°C for 5 hours. The resulting clear and transparent viscous liquid was the coating waste. Adhesive composition.

[0027] Add 40 kilograms of the paint detackifier composition to the circulating water tank of the spray booth containing 40 tons of circulating water. After the circulating water is turned on for 10 minutes, the detac...

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] In a round bottom flask with a condenser, add aminoacetic acid and formaldehyde at a molar ratio of 3:1, and simultaneously add deionized water twice the total weight of aminoacetic acid and formaldehyde. Stir and control the reaction temperature to 70°C. After 7 hours, the reaction system became a clear and transparent viscous liquid. The pH of the system was adjusted to 2.0 with sodium bicarbonate, and then the reaction was allowed to continue for 2 hours at 75°C. The resulting clear and transparent viscous liquid was the paint waste. Adhesive composition.

[0031] Add 80 kg of the above composition to a circulating water tank in a paint spray booth containing 40 tons of circulating water. After the circulating water is turned on for 15 minutes, the detackifier and the circ...

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] In a round bottom flask with a condenser, add urea and acetaldehyde 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 turned into a clear and transparent viscous liquid. Adjust the pH of the system to 6.0 with ammonium carbonate, and then let the reaction continue at 20°C for 7 hours. The resulting clear and transparent viscous liquid is the paint de-tack剂组合物。 Agent composition.

[0035] Add 60 kilograms of the above composition to a circulating water tank in a paint spray booth containing 40 tons of circulating water. After turning on the circulating water for 10 minutes, let the detackifier and the circulating water be fu...

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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 by the 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 paint detackifier composition and a paint detack method using the composition. Background technique [0002] In the existing coating process, such as the automobile coating industry, the shell coating process of mechanical and electronic products, a large part of the oil-based coatings used in the coating process usually cannot be applied to the painted workpiece (such as the above-mentioned automobile coating industry , Mechanical and electronic products) and 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. Because these "overspray" paints are difficult to clean up when they fall on the ground, this kind of "overspray" paint is often dropped into the circulating water to take away the organic solvents in the paint. This circulation system usually ...

Claims

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Application Information

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