Abstract: The invention relates to monomers according to the formulae 1

Abstract: The invention relates to two-component preparations comprising components (I) and (II), wherein at least one component comprises epoxy compounds and the preparations cure by cationic polymerization, initiated by Lewis and/or Brönsted acids, after mixing of the two components, the preparations comprising the Lewis and/or Brönsted acids in the form of precursor compounds which are suitable for the formation of Lewis and/or Brönsted acids.

Abstract: The invention relates to novel cyclic siloxane compounds of the following general formula (I): in which: n=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 preferably 1, 2, 3, 4, 5; A=H or C1-C15 alk(en)yl, C3-C15 cycloalk(en)yl, C6-C12 aryl, C8-C18 alkaryl, where, in the said radicals, in each case one or more C atoms can be replaced by O, C═O, O(C═O), SiR2 and/or NR, R being an aliphatic radical with 1 to 7 C atoms, in which one or more C atoms can be replaced by O, C═O, and/or O(C═O); B=E or a linear, branched or polycyclic aliphatic- or aromatic-groups-containing hydrocarbon radical which links 2 to 10 of the cyclosiloxane radicals defined above, less B, to one another and contains 2 to 50 C atoms and additionally 0 to 30 other atoms from the group O, N, S, P, Si, Cl, F, Br, I and from which correspondingly 1 to 9, preferably 1 to 4 of the above defined cyclosiloxane radicals, less B, are pending; E=A or a polymerizable group G—Q—L, where o

Abstract: The invention relates to polymerizable preparations which contain: (a) 3 to 80 wt. % of an epoxy or of a mixture of epoxies of general formula (I), whereby n and m, independent of one another, represent 0, 1, 2 or 3, and n+m ranges from 2 to 6, and whereby the molar mass of the epoxy or the average molar mass of the mixture of epoxies ranges from 250 to 1000 g/mol; (b) 0 to 80 wt. % of an epoxy or of a mixture of epoxies that differ from (a), (c) 3 to 85 wt. % of fillers; (d) 0.01 to 25 wt. % of initiators, retarders and/or accelerators, and; (e) 0 to 25 wt. % of auxiliary agents, whereby the specified percentages refer to the total weight of the preparation.

Abstract: The invention relates to polymerizable compositions comprising

Abstract: The present invention is directed to polymerizable dental compositions containing a) 3 to 80 wt. % of cycloaliphatic epoxides; b) 0 to 80 wt. % of an epoxide or a mixture of epoxides which are different from a); c) 3 to 85 wt. % of a filer material; d) 0.01 to 25 wt. % of initiators, inhibitors and/or accelerators; e) 0 to 25 wt. % of auxiliary agents, the individual percentages of which are in relation to the total weight. The new polymerizable agents are particularly suited as dental material.

Abstract: The invention relates to compositions which undergo cationic curing with visible light, comprising:(a) 0.01 to 8 wt. % of at least one diaryliodonium compound,(b) 0.01 to 8 wt. % of at least one .alpha.-dicarbonyl compound,(c) 10.0 to 99.9 wt. % of at least one compound containing epoxide groups and/or oxetane groups,(d) 0 to 85 wt. % of modifiers, such as fillers, dyestuffs, pigments, flow improvers, thixotropic agents, polymeric thickeners, additives having an oxidizing action, stabilizers and retardants, characterized in that they additionally comprise(e) 0.001 to 5 wt. % of at least one aromatic amine.The compositions have a low intrinsic color, cure with little smell and, after curing, give compositions with very good mechanical properties.