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Anti-fogging sheet

An anti-fog, sheet technology, applied in the direction of film/flake adhesive, coating, layered products, etc., can solve the problem of reduced anti-fog, and achieve the effect of excellent water resistance

Active Publication Date: 2012-11-28
KIMOTO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, surfactants tend to dissolve in water and flow out, so the anti-fog performance is significantly reduced

Method used

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  • Anti-fogging sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] First, a first coating composition and a second coating composition are prepared.

[0093]

[0094] · Methyl silicate (MS-56: Mitsubishi Chemical Corporation) 5.0 parts

[0095] · Silane coupling agent 0.3 parts

[0096] (SH6040: Toray Dow Corning Corporation)

[0097] · Partially saponified PVA (KISHIDA Chemical Co., Ltd.) 5.0 parts

[0098] (solid content 100%, degree of saponification 87-89 mol%, average degree of polymerization 3500)

[0099] ・Polyacrylic acid (AC-10H: Nippon Junyaku) 5.0 parts

[0100] (solid content 100%)

[0101] · Methanol 40.0 parts

[0102] ·H 2 O 44.5 parts

[0103]

[0104] · Methyl silicate (MS-56: Mitsubishi Chemical Corporation) 5.0 parts

[0105] · Silane coupling agent 0.3 parts

[0106] (SH6040: Toray Dow Corning Corporation)

[0107] ・Polyethylene glycol (KISHIDA chemical company) 30.0 parts

[0108] 20.0 parts of isocyanate curing agent

[0109] (MF-K60X: Asahi Kasei Chemical Co., Ltd.)

[0110] 30.0 parts of diacetone...

Embodiment 2

[0115] Make the amount of "MS-56" of the second coating composition 3.0 parts, make the amount of "polyethylene glycol" 35.0 parts, make the amount of "MF-K60X" 15.0 parts, make "diacetone alcohol" The amount of is 32.0 parts, except that, under the same conditions as in Example 1, the first layer (thickness 3 μm) is formed on the substrate, and the second layer (thickness about 5 μm) is formed on the first layer. Sheet samples of this example.

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PUM

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Abstract

Disclosed is an anti-fogging sheet having a coating film that exhibits excellent water resistance as well as excellent anti-fogging properties. The anti-fogging sheet is constituted by laminating a first layer and a second layer on a substrate, in that order. The first layer is configured from the product obtained by heat-treating a first coating composition, which contains a water-absorbent resin. The second layer is configured from the product obtained by heat-treating a second coating composition, which contains a polyol. The water-absorbent resin preferably contains a polyvinyl alcohol and a polyacrylic acid. The polyol preferably contains polyethylene glycol. The first coating composition and / or the second coating composition preferably contain at least one compound selected from among: metal alkoxides, metal alkoxide hydrolysates, and metal alkoxide hydrolytic polycondensates.

Description

technical field [0001] The present invention relates to an anti-fog sheet exhibiting anti-fog properties particularly excellent in water resistance of a coating film. Background technique [0002] The reason why substrates such as glass and plastic are fogged is that when the surface temperature drops below the dew point, the moisture in the air becomes fine water droplets and adheres, and light is randomly reflected on the surface of the substrate. Therefore, fogging can be prevented by preventing the generation of water droplets on the surface of the substrate. In such an anti-fogging method, for example, four elements of (A) adjustment of wetness, (B) provision of water absorption, (C) provision of water repellency, and (D) adjustment of temperature by heating have been considered. [0003] As (A) wetting adjustment, in order to reduce the contact angle between the base material and water droplets, demisting sprays and the like are commercially available, but such sprays...

Claims

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Application Information

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IPC IPC(8): B32B7/02B32B27/30C09D7/12C09D129/04C09D133/00C09D185/00C09D201/00C09J7/02
CPCC09D5/00C08L29/04B32B7/10C08F220/06C09D133/02B32B7/12B32B27/08B32B27/16B32B27/18B32B27/306B32B27/308B32B2270/00B32B2307/714B32B2307/726
Inventor 井狩雅文森本政雄原田正裕堀川晃
Owner KIMOTO CO LTD