Curable Compositions Containing Silyl Groups, And Use Thereof

A curable composition comprising hydroxyl compounds which bear silyl groups and are of the formula 1

• where
• a is an integer from 1 to 3,
• b is an integer from 0 to 2,
• and the sum of a and b is equal to 3,
• c is an integer from 0 to 22,
• d is an integer from 1 to 1000,
• e is an integer from 0 to 10 000,
• f is an integer from 0 to 1000,
• g is an integer from 0 to 1000,
• h, i and j are each integers from 0 to 500,
• n is an integer from 2 to 8,
• and with the proviso that the fragments with the indices d to j are freely permutable with one another, i.e. are exchangeable for one another in the sequence within the polyether chain,
• and
• R represents one or more identical or different radicals selected from linear or branched, saturated or mono- or polyunsaturated alkyl radicals having 1 to 20 carbon atoms or haloalkyl groups having 1 to 20 carbon atoms, and
• R1 is a saturated or unsaturated, optionally branched radical attached via an oxygen atom, or a polyether radical of the alkoxy, arylalkoxy or alkylarylalkoxy group type in which the carbon chain may be interrupted by oxygen atoms, or a polyetheralkoxy radical or an optionally singly or multiply fused aromatic aryloxy group,
• R2 and R3, and R5 and R6, are the same, or else are each independently, H or a saturated or mono- or polyunsaturated, also further-substituted, optionally mono- or polyvalent hydrocarbon radical, it being the case the R5 and R6 radicals are each a monovalent hydrocarbon radical and the hydrocarbon radical might be cycloaliphatically bridged via the Y fragment;
• Y may be absent, or else may be a methylene bridge having 1 or 2 methylene units;
• if Y is absent, R2 and R3 are each independently a linear or branched radical having 1 to 20 carbon atoms,
• R4 is a linear or branched alkyl radical of 1 to 24 carbon atoms or an aromatic or cycloaliphatic radical which may optionally in turn bear alkyl groups,
• R7 and R8 are each independently hydrogen, alkyl, alkoxy, aryl or aralkyl groups which are copolymerized with ring-opening polymerization to give crosslinkable polyether esters containing alkoxysilane groups,
• R9, R10, R11 and R12 are each independently hydrogen, alkyl, alkenyl, alkoxy, aryl or aralkyl groups, where the hydrocarbon radical may be bridged cycloaliphatically or aromatically via the Z fragment, and Z may be either a divalent alkylene or alkenylene radical,
• and at least one further silane compound.