Dental composition containing a polyfunctional (meth)acrylate comprising urethane, urea or amide groups, method of production and use thereof

US8329776B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Reinhold Hecht · Kaufering, DE
• Uwe H. Hoheisel · Birkenfeld, DE
• Christoph Thalacker · Weilheim, DE
• William J. Schultz · North Oaks, US
• Wendy L. Thompson · Roseville, US

Key dates

• Filing date: Jun 27, 2008
• Grant date: Dec 11, 2012
• Expiry date: Jul 27, 2028

Classification

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

Abstract

The invention relates to a dental composition comprising a) a hardenable compound (A1), b) a filler (B1), c) an initiator (C1) being able to initiate curing of compound (A1), compound (A1) having the structure A-(-S1-U-S2-MA)n, with A being a connector element, S1 being a spacergroup comprised of units connected with each other and comprising at least 4 units, S2 being a spacergroup comprised of units connected with each other and comprising at least 4 units, U being an urethane, an amide or an urea group connecting spacergroups S1 and S2, MA being an acrylate or methacrylate group and n being 3 to 6. The invention also relates to a process of producing this dental composition and using the dental composition e.g. as a temporary and/or long term crown and bridge material.