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Pollution resistant matting aqueous paint composition and forming method thereof

A pollution-resistant, water-based coating technology, applied in coatings, devices for coating liquid on the surface, etc., can solve problems such as coating film pollution, and achieve excellent weather resistance

Inactive Publication Date: 2016-03-02
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the paints described in Patent Documents 2 and 3, they can show a matte appearance and have excellent followability to the substrate. However, when they are applied to exterior paints such as exterior walls, there is a risk that the paint film will be easily contaminated by long-term exposure. Therefore, it is necessary to develop water-based matting coatings with excellent stain resistance

Method used

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  • Pollution resistant matting aqueous paint composition and forming method thereof
  • Pollution resistant matting aqueous paint composition and forming method thereof
  • Pollution resistant matting aqueous paint composition and forming method thereof

Examples

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Embodiment

[0100] Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to these Examples. In addition, "parts" and "%" in the following examples mean "parts by mass" and "% by mass", respectively.

[0101] Manufacture of water-based resin

manufacture example 1

[0103] 350 parts of deionized water and 10 parts of Newcol 707SF (Note 1) were added to a reaction vessel equipped with a thermometer, a thermostat, a stirrer, and a dropping device, stirred and mixed in a nitrogen stream, and the temperature was raised to 85°C. Next, 3% of the pre-emulsion part and 80 parts of 2.5% ammonium persulfate aqueous solution which emulsified the component of the following composition were added in reaction container, and it held at 85 degreeC for 20 minutes.

[0104]

[0105] Then, the remaining pre-emulsion and 80 parts of 2.5% ammonium persulfate aqueous solution were dripped in the reaction container over 4 hours, and aging was performed for 2 hours after the dropwise addition was completed. Then, it cooled to 30 degreeC, and adjusted so that the solid content may be 47 % and pH may become 8.0 using ammonia water and deionized water. Next, it discharged|emitted while filtrating with the nylon cloth of 200 meshes, and obtained the water-based r...

manufacture example 2～4

[0108] In said manufacture example 1, except having made the monomer composition into the compounding shown in following Table 1, it synthesize|combined similarly to manufacture example 1, and obtained water-based resin (A-2) - (A-4).

[0109] [Table 1]

[0110]

[0111] Manufacture of White Pigment Component Dispersion Paste

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Abstract

The invention relates to a pollution resistant matting aqueous paint composition and a forming method thereof. The paint is resistant to pollution and weather for a long term and can be well painted on a substrate. The paint composition is characterized by comprising (A) aqueous resin, (B) pigment component, and (C) glycol ether compounds. The glass-transition temperature of aqueous resin (A) is higher than 10 DEG C. The copolymerization ratio of aromatic vinyl compounds is 40 wt% or less. The pigment component (B) comprises coloring pigment (b1), flake shaped body pigment (b2), and body pigment (b3) other than (b2). The solid content of aqueous resin (A) is 100 parts by weight, the (b1) is 5 parts by weight or more, the (b2) is 50 parts by weight or more, the (b3) is 20 parts by weight or more, the (C) is 5 to 25 parts by weight, and the volume concentration of pigment is 35% or more.

Description

technical field [0001] The present invention relates to a stain-resistant matte water-based paint composition and a method for forming a stain-resistant matte coating film using the composition. Background technique [0002] In recent years, customers' needs for interior and exterior wall coatings such as buildings have diversified, and awareness of finishing gloss that affects the appearance impression is changing. In particular, on the outer wall, conventionally, a high-quality glossy finish is preferred, but the demand for a so-called matte finish with a dull appearance and low gloss is increasing. [0003] In general, the matting coating used to form matting coating finishing can be designed by the following methods: the method of using the refractive index difference of the resin; the method of adding waxes; A method of forming unevenness, etc. [0004] However, the method of utilizing the difference in the refractive index of the resin has a limit in the matting effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D125/14C09D133/08C09D7/12B05D7/24
Inventor 井上刚
Owner KANSAI PAINT CO LTD
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