A novel polyimide as a high molecular weight material having a low dielectric constant, a low dielectric loss tangent and low water absorptivity, a polyamic acid capable of generating the above polyimide, the above polyimide and the polyamic acid being obtained by reacting an aromatic diamine, obtained by introducing aromatic amino groups into both terminals of a specific bifunctional phenylene ether oligomer, with an acid anhydride, a process for the production of the polyimide, a process for the production of the polyimic acid, a film of the polyimide, and a laminate comprising the above film.
一种作为高分子量材料的新型聚
酰亚胺,具有低介电常数、低介电损耗正切和低吸
水性;一种能够生成上述聚
酰亚胺的聚酰胺酸,上述聚
酰亚胺和聚酰胺酸是通过使芳香族二胺与酸酐反应而获得的、上述聚
酰亚胺和聚酰胺酸是通过将芳香族
氨基引入特定的双官能团苯基醚低聚物的两个末端与酸酐反应而得到的;上述聚
酰亚胺的生产工艺;上述聚酰胺酸的生产工艺;上述聚
酰亚胺的薄膜;以及包含上述薄膜的层压板。