| abstract |
The present invention relates to a glass filler material with an average particle sizenof 0.1 - 20 µm. It further relates to a method for producing a glass filler material.nThe glass filler material comprises 65 - 99.95 mol% silicon dioxide (SiO 2 ), 0 - 15nmol% aluminum and/or boron oxide (Al 2 O 3 , B 2 O 3 ), 0 - 30 mol % zirconium and/orntitanium and/or hafnium oxide (ZrO 2 , TiO 2 , HfO 2 ), Y 2 O 3 and/or Sc 2 O 3 and/or La 2 O 3 nand/or CeO 2 and/or other lanthanidoxides, 0.05 - 4 mol% alkali metal oxidesn(Na 2 O, Li 2 O, K 2 O, Rb 2 O, Cs 2 O), 0 - 25 mol% earth alkali metal oxides (MgO, CaO,nSrO, BaO). n The glass filler material shows a low concentration of alkali ions and is used forncomposites with cationically curing properties and for dental composites andndental restoration materials. |