| http://www.w3.org/ns/prov#value | - Particularly preferably n=2 and i=4.In a preferred form of embodiment of the present invention M=Si, Al, Ti or Zr, R' is an unbranched or branched alkyl residue and x, depending on the oxidation number of M, is 3 or 4.Particularly preferably the metal alkoxide corresponds to the formula Si(OEt).sub.4, where Et is an ethyl group.Catalysts in the context of the invention are inorganic or organic aci
|
