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

4 Cites 17 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, this coating composition has problems such as coating film har...

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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.

Application Domain

Liquid surface applicatorsEmulsion paints

Technology Topic

SolventPolyolefin +8

Image

Examples

Experimental program(13)
Comparison scheme(1)
Effect test(1)

Example Embodiment

[0072] Example 1

[0073] A four-necked flask equipped with a thermometer, a stirring device, and a reflux condenser was replaced with nitrogen, and "SU-P-CRON S-851LS" (manufactured by Nippon Paper Co., Ltd., trade name, maleic anhydride modified chlorinated Polyolefin) 100g, tetrahydrofuran 190g, fully dissolved at 65°C. Then, 40 g of 1-butanol and 3 g of dimethylethanolamine were added and 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 solids concentration of the dispersion was 30%, and the pH was 8.1.

[0074] Then, to 133.3 g of the above-mentioned aqueous dispersion (A-1), 131.9 g of deionized water was added to dilute with the stirring of the disperser, and 60 g of the polymerizable monomer mixture (b-1) in the following table 1 was added. And 4 g of "Adika Riako-PSR-1025" (manufactured by ADKA Co., Ltd., trade name, reactive emulsifier). This was transferred to a four-necked flask equipped with a thermometer, a stirring device, and a reflux condenser. After heating to 65°C, "VA-057" (manufactured by Wako Pure Chemical Industries, Ltd., polymerization initiator) diluted with 8.4 g of deionized water was added. ) 0.42 g, reacted for 1.5 hours to obtain an aqueous resin composition (I-1). The solids concentration of the aqueous resin composition is 30%, and the pH is 8.0.

Example

[0075] Examples 2~6

[0076] In Example 1, the composition of the polymerizable monomer mixture was changed to the composition described in Table 1, except that the operation was performed in the same manner as in Example 1, to obtain an aqueous resin composition (I-2) ~(I-6).

[0077] Table 1

[0078]

Example Embodiment

[0082] Example 7

[0083] A four-necked flask equipped with a thermometer, a stirring device, and a reflux condenser was replaced with nitrogen, 100 g of "S-Pakron S-851LS" and 190 g of tetrahydrofuran were added to the flask, and it was fully dissolved at 65°C. Next, 2.6 g of dibutylamine and 3 g of dimethylethanolamine were added and 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 solids concentration of the dispersion was 30%, and the pH was 8.2.

[0084] Then, to 133.3 g of the above-mentioned aqueous dispersion (A-3), 131.9 g of deionized water was added to dilute with stirring of the disperser, and 60 g of the polymerizable monomer mixture (b-1) in Table 1 and "アデカリアソ" were added. -プSR-1025" 4g. It was transferred to a four-necked flask equipped with a thermometer, a stirring device, and a reflux condenser. After heating to 65°C, 0.42 g of "VA-057" diluted with 8.4 g of deionized water was added and reacted for 1.5 hours to obtain an aqueous resin composition.物(I-8). The solids concentration of the aqueous resin composition is 30%, and the pH is 7.2.

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PUM

Property	Measurement	Unit
The average particle size	6.0	µm
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Good solvent resistance
Good adhesion

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.

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example

Example Embodiment

PUM

Description & Claims & Application Information

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