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Infrared reflective coating composition

A technology of infrared reflection and composition, applied in the direction of reflection/signal paint, coating, etc., can solve undescribed problems

Inactive Publication Date: 2012-05-23
ROHM & HAAS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this document does not describe how to obtain a reflective coating composition which specifically exhibits a high level of infrared reflectivity in exterior applications, especially roof and wall coatings

Method used

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  • Infrared reflective coating composition

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0088] Preparation of coating composition

[0089] The "beating part" of the composition was obtained by grinding the raw materials listed in Table 2 by a high-speed disperser at a speed of 400 rpm for 30 minutes. After cooling, the "beating part" is sealed and preserved.

[0090] The coating composition was obtained by adding the raw materials in the "Let Down Part" in Table 2 to the "Beating Part". The mixing of these raw materials is accomplished with a mixing paddle under low speed agitation. After preparation, all coating compositions were stored at room temperature.

Embodiment 1-7

[0092] For each reflective coating formulation in Examples 1-7, the four main inorganic components as key technologies are listed in Table 3(a)-(c).

[0093] Table 2 Formula of coating composition

[0094]

[0095] The main inorganic composition of table 3 embodiment and comparative example

[0096] (a)

[0097] (b)

[0098] (c)

[0099] ＊ In Examples 1-5, the glass hollow microspheres are a mixture of VS5500 (having an average particle diameter of 40-50 μm) and K1 (having an average particle diameter of 70-80 μm) in a weight ratio of 6:4 or 7:3

Embodiment 8

[0100] In Examples 8, 10 and 18-19, the glass hollow microspheres are VS5500 (having an average particle diameter of 40-50 μm)

[0101] a The density is 0.38g / cm3, and the hollow part / microsphere diameter ratio is 0.94:1 (3M VS5500) or 0.98:1 (3MK1)

[0102] b The density is 1.5-2.2g / cm3, the hollow part / microsphere diameter ratio is ≤0.68:1, and the average particle size is 1250 mesh or 11μm, obtained from Shenzhen Kongwei Special Materials Co., Ltd. (Shenzhen, Guangdong, China), patent application in China Used in No.200510120766.4

[0103] c The density is 0.7g / cm3, the hollow part / microsphere diameter ratio is 0.88:1, and the average particle size is 50 mesh or 270 μm, from Shenzhen Kongwei Special Materials Co., Ltd., which uses the performance of solar reflectance in Chinese patent application No.200510120766.4 Test Results

[0104] The solar reflectance performance is tested in the total wavelength band of sunlight radiation 300-2500nm, ultraviolet light band 300-4...

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Abstract

The invention relates to an infrared reflective coating composition. Counted by dry weight of the composition, the composition comprises the following components in percentage by weight: 1-50 percent of inorganic hollow microspheres, 0.5-70 percent of pigment particles and 20-80 percent of at least one polymer adhesive, wherein each microsphere is provided with at least one cavity; the volume mean diameter of the cavities is 0.01-1,000 mum; and the ratio of the average diameter of the cavities to the average diameter of the microspheres is at least 0.89:1. The invention further relates to an infrared reflective multilayer coating film prepared from the coating composition.

Description

technical field [0001] The present invention belongs to the field of architectural coatings and generally relates to coating compositions having improved infrared reflectivity, thermal insulation, dirt pickup resistance (DPUR) and scrub resistance. Background technique [0002] Increased spending and energy shortages have led to increased emphasis on energy efficiency in buildings. The development of infrared reflective and heat insulating coatings will be one of the effective ways to reduce the heat transfer from the outside to the inside of the house, and thus reduce the need for energy consumption. [0003] One search focuses on materials screening, especially inorganic pigments, by testing their reflectivity at specific electromagnetic wavelengths. And reflective paint products mostly incorporate these pigments, typically metal oxides, which selectively reflect rays in specific electromagnetic bands. However, these products perform well in the full solar radiation band...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D201/00C09D7/12C09D5/33C09D133/12B32B27/20
Inventor 黄倩张扬
Owner ROHM & HAAS CO
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