| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polymer precursor exhibiting high transmittance for electromagnetic waves even to a shorter wavelength range though the polymer precursor has a part which sequences an unsaturated bond containing a π-electron orbit and a single bond alternately. <P>SOLUTION: There is provided a polyimide precursor with an aromatic diamine represented by formula (3), and containing 2,2',6,6'-biphenyltetracarboxylic dianhydride as an acid component. <P>COPYRIGHT: (C)2012,JPO&INPIT |
