Preparation of oligomeric or polymeric radiation-reactive intermediates for solvent-structured layers

Claim 1

A process for the preparation of an oligomeric or polymeric radiation-reactive intermediate of a polyimide, polyisoindoloquinazolinedione, polyoxazinedione or polyquinazolinedione, wherein 1) a carboxyl-containing polyadduct of an aromatic or heterocyclic tetracarboxylic dianhydride and a diamino compound, or 2) a carboxyl-containing polyadduct of an aromatic or heterocyclic dihydroxydicarboxylic acid and a diisocyanate, or 3) a carboxyl-containing polyadduct of an aromatic or heterocyclic diaminodicarboxylic acid and a diisocyanate is reacted with a reaction product which is prepared in situ without prior separation, which reaction product is an ethylenically unsaturated monoisocyanate which is the product of reaction of a diisocyanate and at least one ethylenically unsaturated compound which is reactive with isocyanate groups, which ethylenically unsaturated compound is selected from the group consisting of hydroxyalkyl (meth) acrylate, olefinically unsaturated monoalcohol, ethylenically unsaturated amine, ethylenically unsaturated amide, N-methylolamide, and N-methyloletheramide, wherein from 1.8 to 2.2 isocyanate groups of the diisocyanate are present in the reaction for each hydroxyl group of the alcohol, amino group of the amine, or nitrogen atom of the amide.