MOLDED ELECTRIC DEVICE

• Main Authors: AMO SATORU, KOBAYASHI KINYA
• Format: Patent
• Language: English; Japanese
• Published: 17.01.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide a molded electric device having an improved breaking voltage of an insulating layer without impairing the storage stability, low viscosity, breaking toughness, low thermal expansion, and heat resistance of a molded varnish.SOLUTION: A molded electric device includes a mold resin layer and an insulating layer, the insulating layer is a highly insulating resin, and includes a phenoxy resin or epoxy resin having multiple alcoholic hydroxyl groups in the side chain, a polyfunctional monomer having at least one functional group and one isocyanate group selected from the group consisting of a vinyl group, an acrylate group, and a methacrylate group, a mixture and/or reaction product with maleimide compounds having multiple maleimide groups in their structure.SELECTED DRAWING: Figure 1 【課題】モールドワニスの保存安定性や低粘度性、破壊じん性、低熱膨張性、耐熱性を損なうことなく、絶縁層の破壊電圧を向上したモールド電気機器を提供することにある。【解決手段】モールド樹脂層と、絶縁層とを有し、前記絶縁層は、側鎖に複数のアルコール性水酸基を有するフェノキシ樹脂またはエポキシ樹脂と、ビニル基、アクリレート基、及びメタクリレート基からなる群から選ばれる少なくとも一つの官能基及び一つのイソシアネート基とを有する多官能モノマーと、複数のマレイミド基を構造中に有するマレイミド化合物との混合物および／または反応生成物を有する高絶縁性樹脂であるモールド電気機器。【選択図】図１