Coating composition and its manufacturing method, and resin molding and its manufacturing method

A technology of resin molded body and manufacturing method, which is applied to the device, coating, transportation and packaging of surface coating liquid, which can solve the problems of easy condensation, temperature rise, photocatalyst performance degradation, etc., and achieve excellent coating fabric effect

Active Publication Date: 2008-06-25
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Currently, in agricultural fields using greenhouse cultivation in cold regions or mid-mountain regions, after sunset, the temperature inside the greenhouse begins to drop, and condensation occurs from night to before sunrise, which adversely affects cultivated crops
[0003]In addition, in the field of construction, houses with poor indoor ventilation lack the function of spontaneous humidity control, so the following serious problems occur: moisture is easy to accumulate on the floor, On the ceiling, indoor walls, etc.; easy to grow ticks, mold; prone to condensation between indoor walls and exterior walls; and the development of building corrosion
[0004] In addition, in cold regions or intermediate mountainous regions, etc., membrane facilities such as warehouses and containers and storage equipment have the following problems: Condensation occurs inside such facilities due to the increase in humidity and the water vapor generated from the preserved materials stored in these facilities.
[0025] However, in the technology using the above-mentioned photocatalyst, it is unrealistic to irradiate the entire building with light when it is considered that it is applied to a large building
Also, this technology is not suitable for cooling purposes due to temperature rise due to light exposure
Moreover, performance degradation caused by degradation of the photocatalyst is also a potential problem

Method used

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  • Coating composition and its manufacturing method, and resin molding and its manufacturing method
  • Coating composition and its manufacturing method, and resin molding and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0540] [Manufacture of silica and measurement of physical properties]

[0541] 1000 g of pure water was poured into a 5 L detachable glass flask (jacketed) equipped with an open water-cooled condenser on the top. While stirring at 80 rpm, 1400 g of tetramethoxysilane was injected over 3 minutes.

[0542] The water / tetramethoxysilane molar ratio is about 6 / 1. Warm water at 50°C was circulated in the jacket of the detachable flask. Stirring is continued until the contents reach boiling point. Warm water at 50°C was recirculated for about 0.5 hour to gel the resulting sol.

[0543] Thereafter, the gel was quickly taken out, and the gel was pulverized into a powdery wet gel (silica hydrogel) through a nylon sieve with a mesh size of 600 μm. After putting 450 g of the hydrogel and 450 g of pure water into a 1 L glass autoclave, a hydrothermal treatment was performed at 180° C. for 3 hours. The solution was filtered through a nylon sieve with a mesh size of 100 μm, and the filt...

Embodiment 2

[0559] With the weight ratio of 8.3: 16.7: 67.5: 7.5, with the same process as in Example 1, the same silica as in Example 1, the acrylic latex aqueous dispersion used in Example 1, methanol and methyl ethyl The ketones were mixed and stirred to prepare a slurry composition (viscosity: 92 mPa·s) (referred to as the coating composition of Example 2).

[0560] Using a bar coater, the obtained coating composition of Example 2 was coated on a polyvinyl chloride sheet (thickness: 0.5 mm), and dried at room temperature, thereby preparing a coating with a thickness of 21 μm. The humidity-conditioning sheet of the wet layer (referred to as the resin molded article of Example 2).

Embodiment 3

[0562] With the weight ratio of 15.0: 10.0: 67.5: 7.5, in the same process as in Example 1, the same silica as in Example 1, the acrylic latex aqueous dispersion used in Example 1, methanol and methyl ethyl The ketones were mixed and stirred to prepare a slurry composition (viscosity: 52 mPa·s) (referred to as the coating composition of Example 3).

[0563] Using a bar coater, the obtained coating composition of Example 3 was coated on a polyvinyl chloride sheet (thickness: 0.5 mm), and dried at room temperature to prepare a sheet with a thickness of 47 μm. The humidity-conditioning sheet of the humidity-conditioning layer (referred to as the resin molded article of Example 3).

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Abstract

A coating composition excellent in applicability and / or appearance of coated surface, which can give resin moldings having antisweating effect, moisture-conditioning effect, stainproofness and cooling effect (moisture-release cooling effect and / or moisture-release heat-absorbing effect) and / or high endurance. A coating composition comprising an inorganic porous material, a binder resin and a solvent as the essential components, which satisfies the following requirements: (1) the inorganic porous material contains at least one silicon compound, (2) the binder resin has (a) a hydroxyl number of solid matter of 5 to 80 mgKOH / g and (b) a glass transition temperature (Tg) of -5 to 40 C, and (3) the solvent contains at least one organic solvent.

Description

technical field [0001] The present invention relates to a coating composition, a resin molded article, and methods for producing them. Specifically, the present invention relates to a coating composition having excellent applicability and / or appearance of a coated surface and a method for producing the same; Durable resin molded article and method for producing the same. Background technique [0002] Currently, in agricultural fields using greenhouse cultivation in cold regions or mid-mountain regions, the temperature inside the greenhouse starts to drop after sunset, and condensation occurs from night to before sunrise, which adversely affects cultivated crops. [0003] In addition, in the field of construction, houses with poor indoor ventilation lack the function of spontaneous humidity control, so the following serious problems occur: moisture is easy to accumulate on the floor, ceiling, and interior walls, etc.; ticks and mold are easy to grow ; prone to condensation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D201/00B05D7/24C01B33/14C08J7/04C09D7/12D06M11/79D06M15/263C08J7/043C08J7/046C08J7/05C08J7/054C08J7/056C09D7/61
CPCC09D7/1216Y10T428/249984C08K3/34C08J7/047C08K7/24D06M15/263D06M11/79C09D7/1283C08J2400/14C09D7/61C09D7/69C08J7/0427C08J7/05C08J7/043C08J7/054C08J7/046C08J7/056
Inventor 森宽下山胜鹤田祐子
Owner MITSUBISHI CHEM CORP
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