Showa Denko K.k.

Ryoji Toita

Yasushi Kadowaki

Kenji Shimamura

Kazufumi Kai

The invention provides a transparent composite material comprising a cured product of a three-dimensionally crosslinkable resin composition containing tabular inorganic substance having a number-average particle size of 10 to 300 nm and an aspect ratio of 10 to 300 dispersed therein, which material has a small coefficient of thermal expansion against surrounding temperature changes and can be suitably applicable as substrate for display devices, to thereby overcome disadvantages in substrate for display devices using conventional materials that differences in thermal shrinkage between a substrate and an transparent electrode cause cracks in the transparent electrode, resulting in increasing resistance and causing disconnection, and further can provide a display device with high durability.

Transparent composite material

This invention relates to a method for producing a cured film, which comprises a first step of applying a curable resin composition onto a surface of a first substrate and a surface of a second substrate respectively; a second step of bonding the curable resin composition layers provided on each surface of the first and second substrates to each other; and a third step of curing the curable resin composition layer between the first and the second substrates. The present invention enables production of a cured film in which the amount of thermal deformation such as warpage upon heating/cooling is suppressed, and the film can be suitably used as a plastic substrate for a display such as a liquid crystal display device and an organic EL display device, a substrate for a display, such as a substrate for electronic paper and the like, and a substrate for a solar cell.

Cured film and method for production thereof

This invention relates to a method for producing a transparent composite material comprising a first step of subjecting a synthetic smectite having a number average particle diameter of from 10 to 300 nm and an aspect ratio of from 10 to 300 to organizing treatment with an organic quaternary ammonium salt and/or an organic quaternary phosphonium salt; a second step of mixing the synthetic smectite subjected to organizing treatment and a curable resin to prepare a resin composition containing the synthetic smectite in an amount of 10 to 40 mass %; a third step of curing the resin composition to obtain a cured product; and a forth step of removing the organic volatile components remaining in the cured product. According to the method, a transparent composite material which is flexible and has a low coefficient of thermal expansion can be obtained which is reduced in outgassing at high temperature under vacuum as in vapor deposition of a conductive thin film.

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Kawasaki, Japan

Ryoji Toita