| 摘要 |
PURPOSE:To obtain a microworkable and heat resistant material by reacting an unsatd. deriv. with amino groups produced by additionally reacting an unsatd. aziridine compd. with carboxylic groups of a polyamide acid and mixing the product with a bisazide compd. CONSTITUTION:An aziridine compd. having an unsatd. group represented by general formula ( I ) (R3 is a group having an unsatd. bond) is reacted with carboxylic acid groups linked to the side chains of a polyamide acid obtained by reacting diamine with tetracarboxylic dianhydride to produce a new amino group. An unsatd. deriv. represented by the general formula: R4-COX (R4 is a group having an unsatd. bond, and X is -OH, glycidyl, or isocyanate) is reacted with this resultant amine to obtain a polyimide precursor having an unsatd. bond. A substrate is coated with a mixture of said precursor and a bisazide compd. as a photo-crosslinking agent, imagewise exposed and developed to obtain a relief, and further it is heat-treated at 200-400 deg.C. |
