Dental materials based on monomers having debonding-on-demand properties

US9668946B2 · kind B2 · utility

Assignee

• Ivoclar Vivadent AG · LI

Inventors

• Norbert Moszner · Eschen, LI
• Iris Lamparth · Grabs, CH
• Thorsten Bock · Feldkirch, AT
• Urs Karl Fischer · Arbon, CH
• Ulrich Salz · Gettorf, DE
• Volker Rheinberger · Vaduz, LI
• Robert Liska · Schleinbach, AT

Key dates

• Filing date: Sep 10, 2012
• Grant date: Jun 6, 2017
• Expiry date: Apr 29, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F122/22
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to a dental restorative material which comprises a thermolabile or photolabile polymerizable compound of Formula I:[(Z1)m-Q1-X)]k-T-[Y-Q2-(Z2)n]l  Formula I,in which T represents a thermolabile or photolabile group, Z1 and Z2 in each case independently represent a polymerizable group selected from vinyl groups, CH2═CR1—CO—O— and CH2═CR1—CO—NR2— or an adhesive group selected from —Si(OR)3, —COOH, —O—PO(OH)2, —PO(OH)2, —SO2OH and —SH, wherein at least one Z1 or Z2 is a polymerizable group, Q1 in each case independently is missing or represents an (m+1)-valent linear or branched aliphatic C1-C20 radical which can be interrupted by —O—, —S—, —CO—O—, —O—CO—, —CO—NR3—, —NR3—CO—, —O—CO—NR3—, —NR3—CO—O— or —NR3—CO—NR3—, Q2 in each case independently is missing or represents an (n+1)-valent linear or branched aliphatic C1-C20 radical which can be interrupted by —O—, —S—, —CO—O—, —O—CO—, —CO—NR3—, —NR3—CO—, —O—CO—NR3—, —NR3—CO—O— or —NR3—CO—NR3—, X and Y in each case independently are missing or represent —O—, —S—, CO—O—, —O—CO—, —CO—NR3—, —NR3—CO—, —O—CO—NR3—, —NR3—CO—O— or —NR3—CO—NR3—, R, R1, R2 and R3 in each case independently represent H or a C1-C7 alkyl radical a…