Patent ID: 6075068
Filing Date: 2000-06-13
Classification: A61K

Abstract:
Dental composition containing(a) 5 to 70 wt. %, based on (a)+(b)+(d), of polymerizable monomers and/or polymers,(b) 0 to 95 wt. % based on (a)+(b)+(d), fillers,(c) 0.01 to 15 wt. % based on (a), of at least one initiator or initiator system,(d) 0 to 95 wt. %, based on (a)+(b)+(d), of an auxiliary,wherein constituent (a) has a chemical structure such that partial or final curing of the dental composition can be effected by ring-opening metathesis polymerization, and wherein constituent (c) is selected from one of the following three categories:a first category of compounds with the general formulaWX.sub.n L.sub.6-nin combination withR.sub.m AlX.sub.3-mwhereinX denotes F, Cl, Br,L denotes a C.sub.1 -C.sub.20 alcoholate or C.sub.6 -C.sub.20 phenolate with up to 5 hetero-atoms from the group N, O, Si, P, S and substituted up to five times with Cl or Br,R denotes a linear or branched C.sub.1 -C.sub.10 alkyl residue,n denotes 0-6, and m denotes 0-3,and the dental composition may additionally contain an alkyl tin with C.sub.1 -C.sub.5 alkyl residues as an activator;a second category of compounds with the general formulaL.sup.1.sub.a L.sup.2.sub.b M.dbd.CR.sup.1 R.sup.2whereinM denotes Mo, W, Ta or Nb,L.sup.1 denotes OR.sup.3 or Cl or Br, wherein R.sup.3 is a linear or branched or cyclic C.sub.1 -C.sub.10 alkyl residue, which may be partially or fully fluorinated,L.sup.2 denotes PR.sup.4.sub.3 or N.dbd.Ar, wherein R.sup.4 is a linear or branched C.sub.1 -C.sub.20 alkyl residue or an aromatic C.sub.7 -C.sub.20 residue and Ar is an aromatic C.sub.7 -C.sub.20 residue, which may be substituted with linear or branched C.sub.1 -C.sub.10 alkyl, an NH.sub.2 group or an OH group,R.sup.1 and R.sup.2 each denote H or linear or branched or cyclic C.sub.1 -C.sub.15 alkyl or C.sub.6 -C.sub.15 aryl or C.sub.7 -C.sub.15 alkaryl or together C.sub.7 -C.sub.15 alkylene, and a and b each denote a value of 0-6, with the proviso: a+b.noteq.0; anda third category of compounds with the general formulaL.sup.3.sub.c L.sup.4.sub.d L.sup.5.sub.e Ru (.dbd.CR.sup.5 R.sup.6).sub.fwhereinL.sub.3 notes Cl, Br, tosylate or R, wherein R is a linear or branched or cyclic C.sub.1 -C.sub.10 alkyl residue, which may be partially or fully fluorinated,L.sup.4 denotes PR.sup.8.sub.3 or N.dbd.Ar, wherein R.sup.8 is a linear or branched C.sub.1 -C.sub.20 alkyl residue or an aromatic C.sub.7 -C.sub.20 residue and Ar is an aromatic C.sub.7 -C.sub.20 residue, which may be substituted by linear or branched C.sub.1 -C.sub.10 alkyl, an NH.sub.2 group or an OH group,L.sup.5 denotes benzene or alkyl-substituted C.sub.7 -C.sub.20 aromatics,R.sup.5 and R.sup.6 each denote H or linear or branched cyclic C.sub.1 -C.sub.15 alkyl or C.sub.6 -C.sub.15 aryl or C.sub.7 -C.sub.15 alkaryl or together C.sub.1 -C.sub.15 alkylene, and c, d, e and f each denote a value from 0 to 4, with the proviso: c+d+e+f.noteq.0.