Method for forming multilayered coating film

A multi-layer coating, coating technology, applied in the direction of coatings, polyurea/polyurethane coatings, devices for coating liquids on surfaces, etc. Coating film and other problems in hardness and chipping resistance, to achieve the effect of excellent hardness and excellent chipping resistance
CN104136135AInactive Publication Date: 2014-11-05HONDA MOTOR CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HONDA MOTOR CO LTD
Publication Date
2014-11-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides a method for forming a multilayered coating film which comprises applying a first water-based base coating composition, thereafter applying a second water-based base coating composition without preheating the first water-based base coating composition, preheating the applied compositions, further applying a clear coating composition, and then curing the three layers, i.e., the films of the first water-based base coating composition, second water-based base coating composition, and clear coating composition, at the same time, wherein the first water-based base coating composition is a coating composition that contains a specific water-dispersible polyester resin, a specific water-dispersible acrylic resin, a water-dispersible urethane resin, and a melamine resin. With this method, it is possible to form a multilayered coating film that is excellent in terms of smoothness, reflected-image clarity, chipping resistance, and hardness.
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Description

technical field

[0001] The present invention relates to the following method: sequentially coating a water-based first base coat paint, a water-based second base coat paint and a clear paint on an object to be coated, and heating and curing the obtained three-layer multilayer coating film simultaneously. In the baking method, it is possible to form a multilayer coating film excellent in smoothness, image clarity, and chipping resistance by performing preheating (preheating) only once. Background technique

[0002] As a method of forming a coating film on an automobile body, for example, the following method is widely used: After forming an electrodeposition coating film on the object to be coated, the process of "application of intermediate coating → sintering and curing → application of primer → transparent" is widely used. Coating coating → sintering curing" 3-coating 2-baking method to form a multi-layer coating film.

[0003] In contrast, in recent years, from the viewp...

Claims

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