EPOXY RESIN, EPOXY RESIN COMPOSITION CONTAINING THE SAME AND CURED ARTICLE THEREOF

• Main Authors: TATENO MASAKI, MIYAGAWA NAOFUSA, SASAKI TOMOE
• Format: Patent
• Language: English; Japanese
• Published: 12.10.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide an epoxy resin composition containing a silicone modified epoxy resin having a glycidyl ester group, which is extremely useful as a material requiring high transparency and high light extraction efficiency, especially a resin for optical semiconductor as the epoxy resin composition provides LED having high transparency, high light extraction efficiency and high luminous flux maintenance factor.SOLUTION: There is provided a silicone modified epoxy resin (A) containing 2 or more epoxy groups in a molecule, where 20 mol% or more of the epoxy groups is a glycidyl ester structure, and an epoxy resin composition containing the same.SELECTED DRAWING: Figure 1 【課題】本発明によれば、グリシジルエステル基を有するシリコーン変性エポキシ樹脂を含有するエポキシ樹脂組成物が、高い透明性および高い光取り出し効率と高い光束維持率を有するＬＥＤを与えるため、高い透明性且つ高い光取り出し効率が求められる材料、特に光半導体用樹脂としてきわめて有用である。【解決手段】分子内に２つ以上のエポキシ基を含有するシリコーン変性エポキシ樹脂であって、エポキシ基の２０モル％以上がグリシジルエステル構造であるシリコーン変性エポキシ樹脂（Ａ）とそれを含有するエポキシ樹脂組成物【選択図】図１