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    • 49. 发明公开
    • POLYBENZOXAZOLE RESIN AND PRECURSOR THEREOF
    • POLYBENZOXAZOLHARZ UNDVORLÄUFERDAVON
    • EP2695906A1
    • 2014-02-12
    • EP12768274.8
    • 2012-04-04
    • Mitsubishi Gas Chemical Company, Inc.
    • HONDA Eiichi
    • C08G73/22C08L79/04H01B3/30
    • C09D161/00C08G73/22C09D179/04H01B3/307
    • The present invention provides a polybenzoxazole resin containing a repeating unit represented by the following general formula (1):

      wherein R 1 is a tetravalent aromatic group; N atoms and O atoms which are bonded to R 1 are present in the form of pairs each consisting of an N atom and an O atom such that the N atom and the O atom in each pair are respectively bonded to adjacent two carbon atoms constituting the same aromatic ring in R 1 ; R 2 is an alkanediyl group having 1 to 6 carbon atoms; and n is an integer of 2 to 10000, which is excellent in electrical insulating properties, heat resistance, mechanical properties, physical properties, dimensional stability and the like, as well as a polybenzoxazole precursor capable of producing the polybenzoxazole resin which is excellent in solubility in solvents and storage stability.
    • 本发明提供含有下述通式(1)表示的重复单元的聚苯并恶唑树脂:其中R 1为四价芳香族基团; 与R 1结合的N原子和O原子以每一个由N原子和O原子组成的对的形式存在,使得每一对中的N原子和O原子分别键合到构成 R 1中的相同芳环; R 2为碳原子数1〜6的烷二基, n为2〜10000的整数,电绝缘性,耐热性,机械性能,物理性质,尺寸稳定性等优异,以及能够制造溶解性优异的聚苯并恶唑树脂的聚苯并恶唑前体 在溶剂和储存稳定性。