| 摘要 |
PURPOSE:To enable formation of a filter having excellent adhesiveness to a substrate and excellent properties of a coated film by adding and mixing a specific polyimide polymer soln. having excellent adhesiveness and properties of the coated film and an org. pigment having excellent heat resistance. CONSTITUTION:A polyimide precursor is expressed by a polymer contg. the formula as an essential constituting unit and an org. pigment is mixed therewith at 10-300g proportion with 100g the polymer. R1 in the formula is an arom. or heterocycle and R2 is a hydrogen or hydrocarbon group. One component for constituting a polymer such as, for example, 4,4'-diaminodiphenyl ether or the like is added and dissolved into a heated solvent under stirring, then another one component for constituting the polymer such as 3,3', 4,4'-benzophenonetetracarboxylic dianhydride or the like is added thereto to polymerize the polyamide acid. An org. pigment is kneaded therewith by using three rolls and the desired heat resistant coloring paste for color filters is obtd. |
