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    • 3. 发明申请
    • DRY FILM AND MULTILAYER PRINTED WIRING BOARD
    • 干膜和多层印刷接线板
    • US20110278053A1
    • 2011-11-17
    • US13195802
    • 2011-08-01
    • Makoto HAYASHIKoshin NakaiKatsuto Murata
    • Makoto HAYASHIKoshin NakaiKatsuto Murata
    • H05K1/03C08L63/00
    • H05K3/4661C08G59/38C08L63/00H05K3/381H05K2201/0209C08L2666/22
    • A dry film includes a supporting base film and a thin membrane of a thermosetting resin composition. The thin membrane of the thermosetting resin composition is formed on the supporting base film. The thermosetting resin composition includes a liquid epoxy resin, a solid epoxy resin, a semisolid epoxy resin, an epoxy curing agent and a filler. The liquid epoxy resin is liquid at 20° C. and has at least two epoxy groups in a molecule. The solid epoxy resin is solid at 40° C. and has at least three epoxy groups in a molecule. The semisolid epoxy resin is solid at 20° C. and liquid at 40° C. and has at least two epoxy groups in a molecule. A ratio of mass of the liquid epoxy resin to a sum of mass of the solid epoxy resin and mass of the semisolid epoxy resin is about 1:1 to about 1:10 A ratio of the mass of the solid epoxy resin to the mass of the semisolid epoxy resin is about 1:0.5 to about 1:2.
    • 干膜包括支撑基膜和热固性树脂组合物的薄膜。 热固性树脂组合物的薄膜形成在支撑基底膜上。 热固性树脂组合物包括液体环氧树脂,固体环氧树脂,半固体环氧树脂,环氧固化剂和填料。 液体环氧树脂在20℃下为液体,在分子中具有至少两个环氧基。 固体环氧树脂在40℃是固体,在分子中具有至少三个环氧基团。 半固态环氧树脂在20℃为固体,在40℃为液体,在分子中具有至少两个环氧基。 液体环氧树脂的质量与固体环氧树脂的质量之和与半固态环氧树脂的质量之比为约1:1至约1:10A,固体环氧树脂的质量与质量的比例为 半固体环氧树脂为约1:0.5至约1:2。