ACTIVE ENERGY RAY-CURABLE COMPOSITION

• Main Authors: YAMASHITA TOMOFUMI, YOSHIDA KAZUNORI
• Format: Patent
• Language: English; Japanese
• Published: 27.09.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide an active energy ray-curable composition which gives a cured product having a high refractive index, high transparency, excellent adhesion to a plastic substrate, and excellent mold releasability.SOLUTION: An active energy ray-curable composition (D) contains a monomer (A) represented by general formula (1), metal oxide fine particles (B) having a (meth)acryloyl group, and a radical polymerization initiator (C) and has a refractive index at 25°C of 1.54-1.67. [In the formula (1), Ris H or a methyl group; Ris a C1-3 alkyl group or H; Ris a C1-3 alkyl group, H, or a group represented by (RO)n-H; RO is a C2-3 alkyleneoxy group; n is an integer of 1-3; and when n is 2 or more, a plurality of R's may be the same or different.]SELECTED DRAWING: None 【課題】高屈折率であって、高い透明性を有し、プラスチック基材との密着性、金型離型性に優れる硬化物を与える活性エネルギー線硬化性組成物の提供。【解決手段】一般式（１）で表されるモノマー（Ａ）と、（メタ）アクリロイル基を有する金属酸化物微粒子（Ｂ）と、ラジカル重合開始剤（Ｃ）とを含有し、２５℃での屈折率が１．５４〜１．６７である活性エネルギー線硬化性組成物（Ｄ）。［式（１）中、Ｒ１はＨ又はメチル基、Ｒ２はＣ１〜３のアルキル基又はＨ、及びＲ３はＣ１〜３のアルキル基、Ｈ又は（Ｒ４Ｏ）ｎ−Ｈで表される基。Ｒ４ＯはＣ２〜３のアルキレンオキシ基、ｎは１〜３の整数。ｎが２以上の場合、複数あるＲ４は同じでも異なっていてもよい。］【選択図】なし