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AssigneeSiemens Aktiengesellschaft
InventorsHellmut Ahne, Eberhard Kuhn, Roland Rubner
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The present invention relates to oligomeric and/or polymeric precursor stages of polyimidazoles and polyimidazopyrrolones, as well as to a method for preparing these new precursor stages. The invention provides addition products of olefinically unsaturated monoepoxides on amino group-containing polycondensation products of aromatic and/or heterocyclic tetraamino compounds with dicarboxylic-acid chlorides or esters or on amino group-containing polyaddition products of the tetraamino compounds and tetracarboxylic-acid dianhydrides. The radiation-reactive precursor stages according to the invention are suited, for example, for the preparation of highly heat-resistant relief structures.
A polymeric polyimidazole precursor comprising the reaction product of (a) an olefinically unsaturated 1,2-monoepoxide and (b) an amino group-containing polycondensation product of (1) a member selected from the group consisting of an aromatic tetraamino compound and a heterocyclic tetraamino compound and (2) a member selected from the group consisting of a dicarboxylic acid chloride and an ester of a dicarboxylic acid.
A method for the preparation of a polyimidazole precursor comprising reacting (1) a member selected from the group consisting of an aromatic tetraamino compound and a heterocyclic tetraamino compound with (2) a member selected from the group consisting of a dicarboxylic acid chloride and an ester of a dicarboxylic acid to form an amino group-containing reaction product;
Dependencies are inferred from the claim text.