摘要 |
PROBLEM TO BE SOLVED: To obtain a polyimide soluble in general-purpose lowboiling organic solvents represented by methyl ethyl ketone and capable of affording a negative- type polyimide soluble to aqueous alkaline solution, to provide a method for producing the above polyimide, and to obtain a photosensitive composition using it. SOLUTION: This polyimide is obtained by reaction between a diaminopolysiloxane two kinds of diamine compound consisting of carboxyl- contg. diamines or three kinds of diamine compound consisting of the above two kinds and an aromatic or alicyclic diamine, and a dicarboxylic dianhydride with 2,5-dioxotetrahydrofuryl group as one of the acid anhydride groups to form a polyamic acid once, which is then subjected to polyimidation reaction. The other objective photosensitive composition is obtained by incorporating the above polyimide with a photocrosslinking agent and a photo-acid generator. |