prov:value
| - xample on buildings or vehicles) and for hydrophobising substrates, for example of stone or glass.These oligomers are optionally used by (co-)condensation with alkoxides, for example those of the formula III, and/or nanoparticles (IV),in whichM.sub.1 means Si, Sn, Ti, Zr, B or Al,R.sub.4 means alkyl or aryl, preferably C.sub.1 -C.sub.4 alkyl andy means 4 in the case of Si, Sn, Ti, Zr and 3 in the
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