Curable compositions containing silyl groups, and use thereof

A curable composition comprising:

• a hydroxyl compound which bears silyl groups;
• and
• at least one further silane compound;
• wherein the hydroxyl compound is of the formula 1:
• where:
• a is an integer from 1 to 3;
• b is an integer from 0 to 2;
• the sum of a and b is equal to 3;
• where:
• c is an integer from 0 to 22;
• d is an integer from 1 to 1,000;
• e is an integer from 0 to 10,000;
• f is an integer from 0 to 1,000;
• g is an integer from 0 to 1,000;
• h, i, and j are each integers from 0 to 500;
• and
• n is an integer from 2 to 8;
• with the proviso that the fragments with the indices d to j are freely permutable with one another;
• and
• where:
• R represents one or more identical or different, linear or branched, saturated or monounsaturated or polyunsaturated, alkyl or haloalkyl radicals having 1 to 20 carbon atoms;
• 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 is optionally interrupted by oxygen atoms;
• or
• a polyetheralkoxy radical;
• or
• an optionally singly or multiply fused aromatic aryloxy group;
• R2 and R3 are each independently:
• H;
• or
• a saturated or monounsaturated or polyunsaturated, optionally-substituted, monovalent or polyvalent hydrocarbon radical, it being the case that, when the R2 and R3 radicals are each a polyvalent hydrocarbon radical, the R2 and R3 radicals are cycloaliphatically bridged via the Y fragment, where:
• Y is absent, or is a methylene bridge having 1 or 2 methylene units;
• wherein, 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 optionally bears at least one alkyl group;
• R5 and R6 are each independently:
• H;
• or
• a saturated or monounsaturated or polyunsaturated, optionally-substituted, hydrocarbon radical;
• or
• a linear or branched radical having 1 to 20 carbon atoms;
• R7 and R8 are each independently
• hydrogen;
• or
• an alkyl, alkoxy, aryl, or aralkyl group which is copolymerized with ring-opening polymerization to give a crosslinkable polyether ester containing alkoxysilane groups;
• R9 and R10 are each independently
• hydrogen;
• or
• an alkyl, alkenyl, alkoxy, aryl, or aralkyl group;
• and
• R11 and R12 are each independently;
• hydrogen;
• or
• an alkyl, alkenyl, alkoxy, aryl, or aralkyl group;
• where the hydrocarbon radical R11 and R12 radicals are optionally bridged cycloaliphatically or aromatically via the Z fragment;
• and
• where, if present, Z is a divalent alkylene or alkenylene radical.