| 摘要 |
PURPOSE:To obtain a precursor exhibiting low light-transmission loss in near infrared range, having excellent heat-resistance and useful for opto-electronic integrated circuit, etc., by reacting a specific acid halide with a specific diamine. CONSTITUTION:This precursor of formula V can be produced by reacting a tetracarboxylic acid of formula I (R1 is group of formula II, etc.; Rf is fluorine, perfluoroalkyl, etc.) or its derivative with a photo-sensitive alcohol of formula R*OH (R*) is organic group forming an intermolecular crosslinking chemical bond by photo-reaction), converting the product to an acid halide and reacting with a diamine of formula III (R2 is group of formula IV, etc.). |
