ULTRAVIOLET-CURABLE COMPOSITION AND METHOD FOR PRODUCING THE SAME

• Main Authors: KOHARA YOSHIHIRO, TAKAO YOSHINARI
• Format: Patent
• Language: English; Japanese
• Published: 05.04.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PROBLEM TO BE SOLVED: To provide an ultraviolet-curable composition capable of obtaining a cured matter including polysilsesquioxane useful as an organic-inorganic hybrid material, having extremely high strength and high transparency by ultraviolet irradiation and also excellent in water resistance and heat resistance, and high in curing and excellent in productivity.SOLUTION: Provided is an ultraviolet-curable composition comprising thiol group-containing polysilsesquioxane and a liquid compound having three (meth)acrylic acid residues in the molecule as the main components.The weight ratio between the thiol group-containing polysilsesquioxane/the liquid compound having three (meth)acrylic acid residues in the molecule is 4/6 to 7/3, the liquid compound having three (meth)acrylic acid residues in the molecule being tri(meth)acrylic acid tri(meth)acrylic trimethylol propane.SELECTED DRAWING: Figure 1 【課題】有機・無機ハイブリッド材料として有用なポリシルセスキオキサンを含み、紫外線照射によって非常に高強度で高い透明性を備えて且つ耐水性及び耐熱性にも優れた硬化物が得られ、硬化が速く生産性に優れた紫外線硬化型組成物の提供。【解決手段】チオール基含有ポリシルセスキオキサンと、分子中に３つの（メタ）アクリル酸残基を有する液状化合物とを主成分として含有する紫外線硬化型組成物。チオール基含有ポリシルセスキオキサン／分子中に３つの（メタ）アクリル酸残基を有する液状化合物の重量比が４／６〜７／３であり、分子中に３つの（メタ）アクリル酸残基を有する液状化合物がトリ（メタ）アクリル酸トリメチロールプロパンである、紫外線硬化型組成物【選択図】図１