Two-constituent elastomer materials based on alkyl aziridine comprising a catalyst constituent that contains a boric acid complex

US6894144B1 · kind B1 · utility

Assignee

• 3M ESPE AG · DE

Inventors

• Joachim W. Zech · Kaufering, DE
• Gunther Eckhardt · Frieding, DE
• Cornelia Führer · Wertach, DE
• Bernd Gangnus · Andechs, DE
• Andreas Rombach · Herrsching am Ammersee, DE
• Oswald Gasser · Hanerau-Hademarschen, DE
• Thomas Klettke · Dießen, DE
• Erich Wanek · Kaufering, DE

Key dates

• Filing date: Sep 1, 2000
• Grant date: May 17, 2005
• Expiry date: Apr 29, 2021

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K6/90
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to elastomer materials based on N-alkylaziridino compounds with a base component which contains the aziridino compounds and with a catalyst component which contains at least one acid-acting compound, both components being mixed before use, characterized in that, as acid-acting compound of the catalyst component, one or more boric acid complexes are used which can be obtained by reaction of boric acid and/or a boric acid derivative with at least one OH-functional compound, the OH functions being able to be present wholly or partly protected, and this reaction being carried out either as an upstream reaction between boric acid and/or a boric acid derivative and at least one such OH-functional compound or during or after the preparation of the catalyst component or by mixing the catalyst component with the base component which then contains at least one OH-functional compound. The elastomer materials are preferably used as dental impression materials, bite-registration materials and doubling materials.