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Aqueous resin composition, aqueous coating composition and coating method for plastic molded articles

A water-based resin and water-based paint technology, applied in coatings, latex paints, etc., can solve the problems of coating film hardness, insufficient damage resistance and water resistance, and achieve the effects of excellent adhesion and solvent resistance.

Inactive Publication Date: 2009-03-04
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this coating composition has problems such as coating film hardness, damage resistance, water resistance, etc. are still insufficient.

Method used

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  • Aqueous resin composition, aqueous coating composition and coating method for plastic molded articles
  • Aqueous resin composition, aqueous coating composition and coating method for plastic molded articles
  • Aqueous resin composition, aqueous coating composition and coating method for plastic molded articles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] A four-necked flask equipped with a thermometer, a stirring device, and a reflux condenser was replaced with nitrogen, and "ス-パパ-クロン S-851LS" (manufactured by Nippon Paper Co., Ltd., trade name, maleic anhydride modified chlorinated 100 g of polyolefin) and 190 g of tetrahydrofuran were fully dissolved at 65°C. Next, 40 g of 1-butanol and 3 g of dimethylethanolamine were added thereto, stirred for 15 minutes, and then 300 g of deionized water was added for dispersion. Then, the solvent portion was distilled off under reduced pressure at 65°C to obtain an acid-modified chlorinated polyolefin aqueous dispersion (A-1). The dispersion had a solids concentration of 30% and a pH of 8.1.

[0074] Then, in 133.3 g of the above-mentioned aqueous dispersion (A-1), 131.9 g of deionized water was added under the stirring of the disperser for dilution, and 60 g of the polymerizable monomer mixture (b-1) in the following Table 1 was added and 4 g of "Adeka Liasop SR-1025" (manufact...

Embodiment 2～6

[0076] In Example 1, the proportioning composition of the polymerizable monomer mixture is changed to the composition recorded in Table 1, except that, operate in the same manner as in Example 1 to obtain the water-based resin composition (I-2) ~(I-6).

[0077] Table 1

[0078]

Embodiment 7

[0083] A four-neck flask equipped with a thermometer, a stirring device, and a reflux condenser was replaced with nitrogen, and 100 g of "Su-Pacron S-851LS" and 190 g of tetrahydrofuran were added thereto, and fully dissolved at 65°C. Next, 2.6 g of dibutylamine and 3 g of dimethylethanolamine were added thereto, stirred for 15 minutes, and then 300 g of deionized water was added for dispersion. Then, the solvent was distilled off under reduced pressure at 65°C to obtain an acid-modified chlorinated polyolefin aqueous dispersion (A-3). The dispersion had a solids concentration of 30% and a pH of 8.2.

[0084] Then, 131.9 g of deionized water was added to 133.3 g of the above-mentioned aqueous dispersion (A-3) for dilution under stirring in a disperser, and 60 g of the polymerizable monomer mixture (b-1) of the above-mentioned Table 1 and "Adekaliaso" were added. -プSR-1025" 4g. Transfer it to a four-neck flask equipped with a thermometer, a stirring device, and a reflux conde...

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Abstract

A aqueous resin composition is used in the invention which is obtained by emulsion polymerization using a polymerizable unsaturated monomer (b) in the presence of an aqueous resin dispersion (A) comprising an acid-modified polyolefin (a), an ether-based solvent and a basic substance. Also, an aqueous coating composition comprising an aqueous resin dispersion (B) obtained by emulsion polymerization of a polymerizable unsaturated monomer (b) in the presence of an aqueous resin dispersion (A) containing an acid-modified polyolefin (a), an ether-based solvent and a basic substance, with resin beads (C), wherein the content of resin beads (C) is 1-30 parts by mass with respect to 100 parts by mass of the total resin solid content of the coating material. The composition has excellent adhesion for plastic bases and allows formation of coated films with excellent water resistance, stain resistance, damage resistance and solvent resistance.

Description

technical field [0001] The present invention relates to an aqueous resin composition, an aqueous coating composition, and a coating for plastic molded articles capable of forming a coating film excellent in adhesion to plastic substrates and excellent in water resistance, stain resistance, scratch resistance, and solvent resistance. installation method. Background technique [0002] Various materials such as polypropylene, polycarbonate, and ABS are used as plastic materials for interior parts such as dashboards, center consoles, control panels, and door trims of automobiles. In recent years, due to cost and recyclability considerations, they have become Difficult-to-adhesive polypropylene materials continue to grow. Therefore, it is urgent to make the polypropylene material have adhesion and stain resistance (oil resistance) through one-layer coating surface treatment. Therefore, Japanese Patent Application Laid-Open No. 2001-2977 proposes a water-based coating compositio...

Claims

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Application Information

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IPC IPC(8): C08F285/00C08F2/22C09D151/00C09D5/02B05D7/02
Inventor 千野芳明胜田英明原川浩美曾我和夫平山幸一春田直哉
Owner KANSAI PAINT CO LTD
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