| 摘要 |
<p>PURPOSE: A poly-o-hydroxyamide, a polybenzoxazole obtained from the poly-o-hydroxyamide, an electronic component containing a dielectric including the polybenzoxazole, and their preparation methods are provided, to obtain a polybenzoxazole having an excellent barrier effect to the diffusion of copper. CONSTITUTION: The poly-o-hydroxyamide is represented by the formula 1, wherein a is 0 or 1; b is an integer of 1-200; c is an integer of 0-200; and d is 0 or 1. The poly-o-hydroxyamide is prepared by reacting at least one monomer represented by the formula 2 with at least one dicarboxylic acid or an activated dicarboxylic derivative represented by the formula 3, wherein Z is Z1, Z2 or Z3; L is a hydroxyl group or an activated group; and Y is Y1, Y2 or Y3. Preferably the reaction is carried out in the presence of a base. The polybenzoxazole is prepared by heating the poly-o-hydroxyamide.</p> |
