Solutions of polycondensates which have N-containing heterocyclic ring systems as structural units, possessing improved adhesion to inorganic substrates

摘要

Solutions of polycondensates which have N-containing heterocyclic ring systems as structural units, or solutions of intermediates of these polycondensates, in inorganic solvents, contain from 0.1 to 20% by weight, based on the polycondensates or the intermediates thereof, of one or more azidosilanes of the general formulaPPN.sub.3 --R.sup. 3 --Si--R.sup.1.sub.n (OR.sup.2) .sub.3-n IPPwhere R.sup.1 is C.sub.1 -C.sub.3 -alkyl, phenyl, benzyl or toluyl, R.sup.2 is C.sub.1 - C.sub.4 -alkyl, C.sub.2 -C. sub.4 -alkoxyalkyl, phenyl or benzyl, R.sup.3 is C.sub.1 -C.sub.8 - alkylene which may be interrupted by an oxygen atom, a sulfur atom or a -- (N--R.sup.4) -group, where R.sup.4 is hydrogen, methyl, ethyl or phenyl, and n is 0, 1 or 2.