Multiple-package curable coating material composition, method for forming coating film, and coated article

A curing type and composition technology, applied to the surface coating liquid device, polyurea/polyurethane coating, coating, etc., can solve the problem of poor adhesion, processability, poor physical properties of the coating film, processability, and recoating Solve problems such as poor appearance of permanent coating film, hinder siloxane crosslinking reaction, etc., and achieve the effects of excellent non-adhesiveness, excellent chemical resistance, and excellent adhesion

Inactive Publication Date: 2013-12-18
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, although the chemical resistance and non-adhesiveness are improved by increasing the crosslink density, there are problems such as poor adhesion, workability and other physical properties of the coating film.
There is also a method of increasing the glass transition temperature of the resin as a method of ensuring adhesion and processability while improving chemical resistance and non-adhesiveness. If the glass transition temperature is increased, the appearance of the coating film will be poor. It is very difficult to design a curable urethane resin coating that is excellent in chemical resistance, non-adhesiveness, adhesion, processability, and appearance
[0006] On the other hand, although two-component curing type acrylic silicone resin coatings can obtain excellent chemical resistance and non-adhesive properties, compared with two-component curing type polyurethane resin coatings, ther

Method used

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  • Multiple-package curable coating material composition, method for forming coating film, and coated article
  • Multiple-package curable coating material composition, method for forming coating film, and coated article
  • Multiple-package curable coating material composition, method for forming coating film, and coated article

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0103] Example

[0104] The present invention will be described below based on examples, but the present invention is not limited thereto.

Example Embodiment

[0105] (Synthesis example 1: Synthesis of vinyl copolymer (A) having hydroxyl group)

[0106] Put the component (B) shown in Table 1 into a container with a stirrer, reflux cooler, nitrogen introduction tube, and dropping funnel. After introducing nitrogen, the temperature is increased to 110°C, and then the component (A) in Table 1 The mixture was dropped from the dropping funnel at an equal rate for 5 hours. Next, the mixed liquid of the component (C) was dropped at a constant rate over 1 hour. Then, after stirring at 110°C for 2 hours, it was cooled to room temperature. Finally, add the ingredient (D) in Table 1 and stir.

[0107] [Table 1]

[0108]

[0109] V-59: manufactured by Wako Pure Chemical Industries, Ltd., 2,2'-azobis(2-methylbutyronitrile) (combination examples 1-8: preparation of curing agent)

[0110] According to the compounding shown in Table 2, the curing agent was produced.

[0111] In compounding example 3 and compounding example 4, the gelation immediately afte...

Example

[0113] (Examples 1 to 4, Comparative Examples 1 to 10)

[0114] During coating, the coating liquid is produced according to the combinations shown in Table 3 and Table 4, and the air jet coating method is used to coat the ABS resin molded sheet and the polycarbonate molded sheet so that the dry film thickness becomes 10-15 μm. It was dried at 80°C for 30 minutes to form a coating film, and the coating film was evaluated by the following method.

[0115]

[0116] (Evaluation of coating film)

[0117] The coating films formed in Examples 1 to 4 and Comparative Examples 1 to 10 were evaluated for ethanol rubbing resistance, non-sticking properties, bending properties, substrate adhesion, and appearance. Among them, the ethanol rubbing resistance, non-sticking properties, flexural properties, and appearance were evaluated with an ABS resin molded plate, and the substrate adhesion was evaluated with a polycarbonate molded plate. The results are shown in Table 5.

[0118] (Evaluation of r...

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Abstract

The purpose of the present invention is to provide a multiple-package curable coating material composition which is capable of forming a coating film that has excellent chemical resistance, excellent non-adhesiveness, good adhesion, good processability and good appearance at the same time. A multiple-package curable coating material composition of the present invention is composed of (1) an acrylic resin coating material and (2) a curing agent. This multiple-package curable coating material composition is characterized in that: (1) the acrylic resin coating material has a coating film-forming component that contains a vinyl copolymer (A) having a hydroxyl group, and the vinyl copolymer (A) having a hydroxyl group additionally has a hydrolyzable silyl group; and (2) the curing agent contains an isocyanate compound (B) and a cyclic tertiary amine compound (C) that does not have an active hydrogen group.

Description

technical field [0001] The present invention relates to a multi-liquid curable coating composition having good adhesion to plastic substrates, chemical resistance, non-adhesiveness, processability, and excellent coating film appearance. A method for forming a coating film of a curable coating composition and a coated object coated with the above-mentioned multi-liquid curable coating composition. Background technique [0002] Acrylic lacquer coatings, two-component curing type urethane resin coatings, two-component curing type acrylic silicone resin coatings, and the like have been used so far for the purpose of protecting plastic molded products and imparting design properties. [0003] Acrylic paints are one-component paints that do not involve crosslinking reactions of resins, and are easy to handle without the trouble of compounding a curing agent. However, the resulting paint films are inferior in chemical resistance and the like. [0004] In addition, the two-componen...

Claims

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Application Information

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IPC IPC(8): C09D133/14B05D7/24C09D7/12C09D143/04C09D175/04C09D183/06
CPCB05D7/52B05D2502/00B05D2507/00C08G18/2063C08G18/6225C08G18/7657C09D143/04C09D175/04B05D7/24C09D133/14C09D183/06
Inventor 塚尾淳司
Owner KANEKA CORP
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