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Coating material composition and coating material system containing coating material composition

A composition and coating technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of not meeting the polishability requirements of automotive coatings and low hardness of the covering layer, and achieve good initial peelability and coating The effect of simple method

Inactive Publication Date: 2019-06-04
COVESTRO DEUTSCHLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coatings formed by waterborne polyurethane systems have low hardness and cannot meet the polishability requirements of automotive coatings

Method used

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  • Coating material composition and coating material system containing coating material composition
  • Coating material composition and coating material system containing coating material composition
  • Coating material composition and coating material system containing coating material composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-15

[0218] Examples 1-15 (the coating system does not contain the third composition)

[0219] Add each component of the first composition shown in table 1 into a container while stirring, keep stirring at a speed of 1500 rpm for 20 minutes, stop stirring, filter, and leave it for 24 hours, then use a spray gun ( SATA HVLP4000 (purchased from Sata, Germany) was applied to the surface of the test substrate to form the first coating, baked at 60°C for 20 minutes or dried under the conditions of temperature 23±2°C and humidity 50%±5%. One coat, the thickness of the first coat after drying is 20µm-30µm.

[0220] According to the amount shown in Table 2, the components are uniformly mixed to obtain the mixture containing the compound containing isocyanate reactive groups and the mixture containing isocyanate compounds respectively, and the mixture containing the compound containing isocyanate reactive groups and the compound containing isocyanate Mix the mixture evenly to obtain the ...

Embodiment 16-17

[0221] Examples 16-17 (The coating system further comprises a third composition)

[0222] Add each component of the first composition shown in table 1 into a container while stirring, keep stirring at a speed of 1500 rpm for 20 minutes, stop stirring, filter, and leave it for 24 hours, then use a spray gun ( SATA HVLP4000, purchased from Sata, Germany) was applied to the surface of the test substrate to form the first coating, baked at 60°C for 20 minutes or dried at a temperature of 23±2°C and a humidity of 50%±5%. One coat, the thickness of the first coat after drying is 20µm-30µm.

[0223] Use a spray gun (SATA HVLP4000, purchased from Sata, Germany) to apply the third composition shown in Table 3 to the surface of the first coating to form the third coating, bake at 60 ° C for 20 minutes or at a temperature of 23 Dry the third coating at ±2°C and a humidity of 50%±5%, and the thickness of the third coating after drying is 20µm-30µm.

[0224] According to the amount sho...

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Abstract

The present invention relates to a coating material composition and a coating material system containing the coating material composition, more particularly to a coating material composition, a peelable coating material system containing the coating material composition, a coating method and applications of the coating material system, and a product obtained by coating with the coating material system, wherein the coating material composition contains: a compound containing an isocyanate reactive group, a polyisocyanate and an organic solvent, the isocyanate group functionality of the polyisocyanate is not less than 2.8, and an equivalent ratio of the isocyanate group to the isocyanate reactive group is 0.5:1-10:1.

Description

technical field [0001] The invention relates to a coating composition, a strippable coating system comprising the coating composition, a coating method and application of the coating system, and a product obtained by coating the coating system. Background technique [0002] In the automotive market, there is a need to change the color of the vehicle's appearance or spray personalized patterns on the vehicle. If the color paint is directly sprayed on the surface of the original car paint of the car, the original paint will be damaged. [0003] In order not to destroy the original paint of the car, but also to achieve multiple color changes or spray patterns, the current common method is to paste a layer of colored plastic film cut into different shapes and patterns on the surface of the car. However, since the plastic film is flat, and the car has a three-dimensional structure, when pasting the plastic film, it is necessary to use glue and pull it with external force to make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/20C09D7/63C08G18/60C08G18/62C08G18/42C08G18/48C08G18/44C08G18/73
Inventor 邱学科朱楚华张之涵李金旗朱德勇付强庞博
Owner COVESTRO DEUTSCHLAND AG
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