Elastomeric materials having an improved catalyst component

The invention relates to elastomer materials based on N-alkyl aziridino compounds comprising a base constituent, which contains the aziridino compounds, and comprising a catalyst constituent, which contains at least one acidically active compound, whereby both constituents are mixed before use. The inventive elastomer materials are characterized in that one or more boric acid complexes are used as an acidically active compound of the catalyst constituent. Said boric acid complex can be obtained by reacting boric acid and/or a boric acid derivative with at least one OH-functional compound. The OH functions can exist in a completely or partially protected manner, and the reaction ensues either as a pre-arranged reaction between boric acid and/or a boric acid derivative and at least one such OH-functional compound or during or after the production of the catalyst constituent or by mixing the catalyst constituent with the base constituent, which then contains at least one OH-functional compound. The elastomer materials are preferably used as dental impression materials, bite recording materials, and doubling materials.