Ivoclar Vivadent Ag

Beate Ganster

Norbert Moszner

Ulrich Salz

Robert Liska

Heinrich Gruber

Volker Rheinberger

Urs Karl Fischer

Gerald Ullrich

Polymerizable dental material which contains at least one radically-polymerizable monomer and at least one bisacylphosphine oxide of the Formula I, in which Ris a linear or branched Cto Calkyl residue, which can be interrupted by one or more O atoms, PG-Y&#x2014;R&#x2014;X&#x2014; or a substituted or unsubstituted, aromatic Cto Cradical; Ris absent or a linear or branched Cto Calkylene radical, which can be interrupted by one or more O atoms; Ris H, a linear or branched Cto Calkyl residue or PG-Y&#x2014;R&#x2014;X&#x2014;; Ris a linear or branched C-Calkyl or &#x2014;O&#x2014;C-Calkyl residue; Ris H or PG-Y&#x2014;R&#x2014;X&#x2014;; Ris H or PG-Y&#x2014;R13 X&#x2014;; PG is 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&#x2014;R&#x2014;X group and X and/or Y being absent if Ris absent.

Photopolymerizable dental materials with bisacylphosphine oxides as initiators

Composition with at least one polymerizable binder and at least one polymerization initiator, which contains at least one acylgermanium compound according to general Formula (I), in which Ris a substituted or unsubstituted C-alkyl radical or an acyl group; Rand Rare H, an acyl group or have one of the meanings given for R; Ris a branched or linear C-alkyl radical which can be unsubstituted or substituted one or more times by &#x2014;O&#x2014;, &#x2014;NH&#x2014;, &#x2014;NR&#x2014;, &#x2014;S&#x2014; or interrupted by other groups, trimethylsilyl, hal-(CH)Si&#x2014;[OSi(CH)], (CH)Si&#x2014;[OSi(CH)]&#x2014;, &#x2014;COOH, &#x2014;COO&#x2014;R, &#x2014;CO&#x2014;NRR, &#x2014;CO-vinyl, &#x2014;CO-phenyl, phenyl-C-alkyl, phenyl, naphthyl or biphenyl, Ccycloalkyl, a 5 or 6-membered O, S or N-containing heterocyclic ring, halogen, OH, an aromatic Cradical which can be substituted or unsubstituted and/or interrupted by O, S or &#x2014;NR&#x2014;, or a branched, cyclic or linear Calkyl, -alkenyl, -alkoxy or -alkenoxy radical; m is 1, 2 or 3; n is 0 or 1 and p is 0 or 1; wherein in each case two of the radicals R, R, Ror Rcan be connected to each other accompanied by the formulation of a 5 to 8 member ring; and the use of acylegermanium compounds of Formula (I), for example, as initiator for radical polymerization.

Polymerizable compositions with acylgermanium compounds

Growing community of inventors

Vienna, Austria

Beate Ganster