Patent ID: 7714034

Claim:
Polymerizable dental material comprising at least one radically polymerizable monomer and at least one bisacylphosphine oxide of the Formula I, in which the variables have the following meanings independently of one another: R 1 a linear or branched C 2 to C 14 alkyl residue which can be interrupted by one or more O atoms, PG-Y—R 2 —X—, or a substituted or unsubstituted aromatic C 6 to C 14 radical; R 2 —[CH 2 ] n —[—O—CH 2 —CH 2 ] m — with n=1, 2, 3, or 4 and m=0, 1, 2, or 3; R 3 H, a linear or branched C 1 to C 6 alkyl residue or PG-Y—R 2 —X—, R 4 a linear or branched C 1 -C 6 alkyl or —O—C 1 -C 6 alkyl residue, R 5 H or PG-Y—R 2 —X—, R 6 H or PG-Y—R 2 —X—, PG a polymerizable group, X is absent, O or S, Y is absent, O, S, an ester, amide or urethane group, the bisacylphosphine oxide having at least one PG-Y—R 2 —X-group and Y being O if m is 0.