| abstract |
The invention relates to water-free metal oxide colloids and/or metal oxide polymers of general formula [M(O)X3X4]n (1) in an aprotic, organic solvent or solvent mixture, wherein M = Si, Ge, Sn, Ti, Zr or Hf; and X3 and X4 = independently from each other, O1/2, H, alkoxy (-OR), wherein R represents an organo radical having 1 - 20 C-atoms, alkyl having 1 - 20 C atoms or aryl having 6 - 20 C atoms, wherein the alkyl - or aryl radicals can include one or several other halogen substituents, selected from the group of F, Cl, Br or I; and n = typical values of 10 -1.000.000. |