Hydrophilic, alkoxysilane-containing isocyanurates

An alkoxysilane-containing isocyanurate of formula (II)

• wherein
• R1, R2 and R3 are, in each case independently of one another, a linear, a branched, or a cyclic C1-C8 alkylene radical,
• R′, R″ and R′″ are, in each case independently of one another, a linear, a branched, or a cyclic C1-C8 alkyl radical,
• j, k, l, are each independently of one another, 0, 1, 2 or 3,
• 1≤j+k+l≤7, and
• radical —OB is a polyalkylene oxide polyether alkoxy radical, or
• radical —OB has formula —O{(X)-(y)a-(Z)},
• wherein
• radical X derives
• from a hydroxypolyethylene glycol ether of empirical formula HO(CH2CH2O)nT1, wherein n=2-100, wherein T1=H or C1-C6 alkyl, or
• from a hydroalkylcarboxylic acid, or
• from a hydroxypolyethersulfonic acid,
• a is 0 or 1,
• radical y, if present, derives from a di- or polyisocyanate, from a di- or polycarboxylic acid derivative, from a di- or polyepoxide, from a mono- or polyalkoxysilane, from an epoxyisocyanate, from an epoxyalkoxysilane or from an isocyanatosilane, and
• radical Z derives
• from a hydroxy-terminated polyether of formula
• TO(CTHCH2O)n(CH2CH2O)pT′, wherein T=—(CH2)mCH3, n and m independently of one another=0-20, p=0-5 wherein n is greater than or equal to 4 times p, and T′=H or C1-C18 alkyl, or
• from one or more than one hydroxyhydrocarbon having 1-18 carbon atoms, which is optionally branched and/or optionally contains rings and/or heteroatom(s), or
• from an alkylene oxide having at least four carbon atoms which is optionally branched and/or optionally contains rings.