Radiopaque dental composition

US11612548B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Christoph Thalacker · Weilheim, DE
• Adrian S. Eckert · Herrsching am Ammersee, DE
• Henry Loll · Gilching, DE
• Karsten Dede · Landsberg, DE

Key dates

• Filing date: Nov 5, 2018
• Grant date: Mar 28, 2023
• Expiry date: Sep 20, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61C2201/005
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to a radiation-curable radiopaque dental composition comprising a resin matrix comprising cross-linkable component(s) as Component A, ethylenically unsaturated component(s) with acidic moiety as Component B, an initiator system comprising photoinitiator(s) as Component C, reducing agent(s) as Component D, Component A containing at least two (meth)acrylate moieties and a brominated aromatic moiety selected from brominated resorcinol, catechol, tyrosol, benzoic acid, or phenol moieties. The composition can be used for producing an x-ray visible dental adhesive composition, restoration primer or dental sealant.