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    • 6. 发明授权
    • Material for electrical insulating organic film, electrical insulating organic film and process for the preparation thereof
    • 电绝缘有机薄膜材料,电绝缘有机薄膜及其制备方法
    • US06380271B1
    • 2002-04-30
    • US09604675
    • 2000-06-27
    • Takashi EnokiTakashi YamajiMitsumoto MurayamaYoko HaseToshimasa Eguchi
    • Takashi EnokiTakashi YamajiMitsumoto MurayamaYoko HaseToshimasa Eguchi
    • C08J900
    • C08G73/22H05K3/285
    • The present invention provides a material for electrical insulating organic film, superior in electrical properties, thermal properties and low water absorption; an electrical insulating organic film made from the material; and a process for production of the film. That is, the present invention provides an electrical insulating organic film having fine pores, consisting of a layer of a polybenzoxazole resin represented by the following general formula (1): wherein n is an integer of 2 to 1,000; X is a tetravalent organic group; and Y is a bivalent organic group; a material for electrical insulating organic film obtained by mixing a polybenzoxazole precursor or a polybenzoxazole resin, with an oligomer; and a material for electrical insulating organic film, obtained by reacting at least one carboxylic acid terminal of a polybenzoxazole precursor with an amino group- or hydroxyl group-containing oligomer. The above electrical insulating organic film is produced by a process which comprises mixing a polybenzoxazole precursor or a polybenzoxazole resin with an oligomer, forming a film from the resulting mixture, and heating the film to give rise to thermal decomposition and gasification of the oligomer, to obtain a polybenzoxazole resin layer having fine pores; or by a process which comprises reacting at least one carboxylic acid terminal of a polybenzoxazole precursor with an amino group- or hydroxyl group-containing oligomer to synthesize a material for electrical insulating organic film, forming a film from the material, heating the film to give rise to ring closure of the polybenzoxazole precursor, further heating the resulting material to give rise to thermal decomposition and gasification of the oligomer group, to obtain a polybenzoxazole resin layer having fine pores.
    • 本发明提供一种电绝缘性有机膜的材料,其电性,热性能和吸水性低; 由该材料制成的电绝缘有机膜; 以及该膜的制造方法。 也就是说,本发明提供一种具有细孔的电绝缘性有机膜,由以下通式(1)表示的聚苯并恶唑树脂层组成:其中n为2〜1,000的整数; X是四价有机基团; Y为二价有机基团; 通过将聚苯并恶唑前体或聚苯并恶唑树脂与低聚物混合而获得的电绝缘性有机膜的材料; 以及通过使聚苯并恶唑前体的至少一个羧酸末端与含氨基或羟基的低聚物反应而获得的电绝缘性有机膜的材料。 上述电绝缘性有机膜通过以下方法制造,该方法包括将聚苯并恶唑前体或聚苯并恶唑树脂与低聚物混合,从所得混合物形成膜,并加热该膜以引起低分子的热分解和气化, 得到具有细孔的聚苯并恶唑树脂层; 或通过包括使聚苯并恶唑前体的至少一个羧酸末端与含氨基或羟基的低聚物反应以合成电绝缘有机膜的材料,从该材料形成膜,加热该膜以得到 引起聚苯并恶唑前体闭环,进一步加热所得材料,引起低聚物基团的热分解和气化,得到具有细孔的聚苯并恶唑树脂层。