| abstract |
[PROBLEMS] To provide a polyimide, a polyimide varnish, and a polyimide film that simultaneously satisfy all of excellent heat resistance, low linear thermal expansibility, excellent film toughness (high elongation at break), high light transmittance, and excellent solution processability. With the goal. Moreover, the novel tetracarboxylic dianhydride used as the raw material of this polyimide is provided. A tetracarboxylic dianhydride derived from trans, trans-1,2,4-cyclohexanetricarboxylic acid-1,2-anhydride-4-chloride and a specific diamine is used as a monomer. The polyimide mentioned in the subject is synthesize | combined by making it react with the said monomer and various diamine. [Selection figure] None |