A cage 1,2,3,4-cyclopentanetetracarboxylic acid (1,3:2,4)-dianhydride compound represented by formula [1], and a polyimide obtained by condensing the compound with a diamine. With the compound, it is possible to provide a polyimide which shows no absorption in the ultraviolet region and is highly transparent to light, has high insulating properties, has improved heat resistance and processability, and has excellent solubility in organic solvents.
(In formula [1], R
1
and R
2
each independently represents a hydrogen atom, a halogen atom, or a C
1-10
alkyl.)
化学式为[1]的
1,2,3,4-环戊烷四羧酸(1,3:2,4)-二酐化合物和通过该化合物与二胺缩合制得的聚
酰亚胺。使用该化合物,可以提供一种聚
酰亚胺,该聚
酰亚胺在紫外线区域不吸收,并且对光高度透明,具有高绝缘性能,改善了耐热性和加工性,并且在有机溶剂中溶解性优异。(在公式[1]中,R1和R2各自独立地表示氢原子、卤素原子或C1-10烷基。)