Silicon-based impression compounds with improved non-sag properties

US6677393B1 · kind B1 · utility

Assignee

• 3M ESPE AG · DE

Inventors

• Joachim W. Zech · Kaufering, DE
• Erich Wanek · Kaufering, DE

Key dates

• Filing date: Oct 1, 2001
• Grant date: Jan 13, 2004
• Expiry date: Oct 1, 2021

Classification

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

Abstract

The invention relates to silicone-based addition-crosslinking impression material, containing(a) organopolysiloxanes with at least two unsaturated groups in the molecule,(b) organohydrogen polysiloxanes with at least three Si—H groups in the molecule,(c) optionally, organopolysiloxanes without reactive groups,(d) platinum catalyst,(e) optionally, hydrophilizing agent,(f) filler,(g) optionally, further customary additives, auxiliaries and dyes,characterized in that it contains, as component (h), polyalkylene oxide and/or its derivatives with an average molar mass of Mw>1000 at the rate of 0.001 to 1.0 wt.-% relative to the total mass of the cured material.