Modified alkoxylation products having at least one non-terminal alkoxysilyl group and a plurality of urethane groups, and their use

Alkoxylation products comprising structural elements of the formula (I):

• MiDjTkQlURuAPv formula (I);
• wherein:
• M, D, T and Q are linked not to one another but instead with one another via the groups UR and/or AP, and the groups UR and AP are not linked to one another;
• i=2 to 16;
• j=1 to 10;
• k=0 to 6;
• l=0 to 4;
• j+k is greater than or equal to 2;
• u=2 to 17;
• and
• v=0 to 6;
• where:
• M independently at each occurrence is a hydrocarbon radical, with no alkoxysilyl and/or alkylsilyl groups, which carries an oxygen radical and has a minimum numerical molar mass of 88 g/mol, and which may be further substituted and optionally be interrupted by heteroatoms;
• D independently at each occurrence is a polyether radical PE with t being 2;
• T independently at each occurrence is a polyether radical PE with t being 3;
• Q independently at each occurrence is a polyether radical PE with t being 4;
• UR is a divalent radical of the form —U-Dc-U—, where U is a —C(O)—NH group which is bonded via the nitrogen to Dc, and Dc is a divalent hydrocarbon radical;
• PE is a polyether residue of the formula -(DA)t-Dx;
• where t=2 to 4;
• where Dx is a t-valent functional, saturated or unsaturated, linear or branched organic hydrocarbon residue which contains O, S, Si, and/or N as heteroatoms;
• and
• where DA is a fragment of the formula (II):
• wherein:
• R2=independently at each occurrence can be an alkyl group having 1 to 8 carbon atoms;
• and
• R3=independently at each occurrence an alkyl group having 1 to 8 carbon atoms;
• wherein:
• R4 and R5 are:
• R4=independently at each occurrence a hydrogen radical or an alkyl group having 1 to 8 carbon atoms;
• and
• R5=independently at each occurrence a hydrogen radical, an alkyl group having 1 to 20 carbon atoms or an aryl or alkaryl group;
• or
• R4 and one of the radicals R5 may together form a ring which includes the atoms to which R4 and R5 are bonded;
• wherein:
• R6 and R7=independently at each occurrence the same as R5 and/or alkoxy;
• and
• R11=independently at each occurrence a saturated or unsaturated alkyl group having 1 to 24 carbon atoms, whose chain may be interrupted by oxygen and may further carry functional groups, or an aryl group having 6 to 20 carbon atoms, or an alkaryl group having 7 to 20 carbon atoms;
• wherein:
• a=1 to 1000;
• with the proviso that if M carries no substituents with alkoxysilyl groups or is itself not directly substituted by alkoxysilyl groups, the index a must be greater than or equal to 1;
• b=0 to 1000;
• c=0 to 1000;
• and
• d=0 to 1000;
• with the proviso that the groups having the indices a, b, c and d are freely permutable over the molecular chain;
• and
• wherein:
• e=1 to 10;
• g+f=3 and g is at least 1;
• and
• h=0 to 10;
• with the proviso that the different monomer units, both of the fragments having the indices a, b, c, and d, and of the polyoxyalkylene chain of the substituent R1, may be constructed in blocks with one another or else may be subject to a statistical distribution, and, moreover, are freely permutable with one another;
• and
• AP are, independently of one another, identical or different residues of the general formula (IIIa) or (IIIb):