Aqueous silane systems based on bis (trialkoxysilylalkyl) amines

摘要

Composition containing aqueous bis-amino functional silicon compounds and water, wherein the silicon compounds are derived from alkoxysilanes and present cross-linking structural elements that form chain-shaped, cyclic, cross-linked and / or cross-linked structures in space, corresponding at least an ideal form structure to the general formula I, (R2O) [(R2O) 1-x (R3) xSi (B) O] b [(Y) 2Si (A) Si (Y) 2O] a [Si (C ) (R5) y (OR4) 1-yO] c [Si (D) (R7) u (OR6) 1-uO] d [Si (E) (R8) v (OR9) 1-vO] wR9- (HX ) and (I) where in the structural elements derived from alkoxysilanes - A corresponds to a bis-aminoalkyl radical, - B corresponds to an aminoalkyl radical, - C corresponds to an alkyl radical, - D corresponds to an epoxy or ether radical and - E corresponds to an organofunctional radical, - Y corresponds to OR1, or in crosslinked and / or crosslinked structures in space, independently of each other, OR1 or O1 / 2, - where R1, R2, R4, R6 and R9 correspond to hydrogen and R3 and R5 correspond to a radical linear, branched or cyclic alkyl with 1 to 12 C atoms and / or an aryl radical, R7 and R8 correspond to a linear, branched and / or cyclic C 1 to 4 alkyl radical, and - HX represents an acid, where X is an inorganic or organic acid radical, - with 0 = x = 1, 0 = y = 1, 0 = u = 1, v = 0 or 1, a = 1, b = 1, c = 0, d = 0, w = 0, e = 1, and (a + b + c + d + w) is = 2, - where the composition is essentially solvent-free organic solvents and during crosslinking it essentially no longer releases any alcohol, where the organic solvent content of the composition is less than 5% by weight, and - where the molar ratio of bis-amino-functional alkoxysilane to amino-functional alkoxysilane is 1.0 , and - presents a pH value between 1 and 5.4, - where A in the structural element corresponds to a bis-aminoalkyl radical derived from the general formula II (OR1) 3Si-A-Si (OR1) 3 (II ) A representing a bis-amino functional group of the formula III - (CH2) i- [NH (CH2) f] gNH [(CH2) f * NH] g * - (CH2) i * - (III), where i, i *, f, f *, g or g * are the same or different, with iy / oi * = 1 to 8 , fy / of * = 1, 2 or 3, gy / og * = 0, 1 or 2 and R1 corresponds to a linear, cyclic and / or branched alkyl radical with 1 to 4 C atoms, and - where B in The structural element corresponds to an amino functional radical derived from the general formula IV B-Si (R3) x (OR2) 3-x (IV) with x = 0 or 1, where R2 is an alkyl radical with 1 to 4 atoms of C linear, branched and / or cyclic, R3 is an alkyl radical with 1 to 12 linear, branched or cyclic C atoms and / or an aryl radical and B corresponds to one of the following amino functional groups of the general formula Va or Vb R10 h * NH (2-h *) [(CH2) hNH)] j [(CH2) l (NH)] n- (CH2) k- (Va), where 0 = h = 6; h * = 0, 1 or 2, j = 0, 1 or 2; 0 = l = 6; n = 0, 1 or 2; 0 = k = 6 and R10 corresponds to a benzyl radical, aryl, vinyl, formyl and / or a linear, branched and / or cyclic alkyl radical with 1 to 8 C atoms, and / or [NH2 (CH2) m] 2N (CH2) p- (Vb), where 0 = m = 6 and 0 = p = 6, and - where C in the structural element corresponds to an alkyl radical derived from the general formula VI C-Si (R5) and (OR4) 3-y (VI) with y = 0 or 1, where C corresponds to an alkyl radical with 1 to 20 linear, branched or cyclic C atoms, R5 corresponds to an alkyl radical with 1 to 12 linear, branched or cyclic C atoms and / or an aryl radical, R4 corresponds to an alkyl radical with 1 to 4 linear, branched and / or cyclic C atoms, and - where D corresponds to the structural element to an epoxy or ether radical derived from the general formula VII D-Si (R7) or (OR6) 3-u (VII) with u = 0 or 1, where D corresponds to a 3-glycidoxyalkyl, 3-glycidoxypropyl radical, epoxyalkyl, epoxycycloalkyl, polyalkylglycolkyl or a polyalkylglycol-3-propyl radical, R7 corresponds to a linear, branched and / or cyclic alkyl radical with 1 to 4 C atoms and R6 corresponds to a branched and / or cyclic C 1 to 4 alkyl radical, and - where E corresponds to the structural element to an organofunctional radical derived from the general formula VIII E-Si (R8) v (OR9) 3-v (VIII) with v = 0 or 1, where R8 corresponds to an alkyl radical with 1 to 4 linear C atoms, branched or cyclic, - where E corresponds to a radical R8 * -Ym- (CH2) s-, where R8 'corresponds to an alkyl radical with 1 to 9 mono-, oligo- or per-fluorinated C atoms or a mono-, oligo- or per-fluorinated aryl radical, where, in addition, Y corresponds to a radical CH2, O, aryl or S, and m is = 0 or 1 and s = 0 or 2, and / or - E corresponds to a vinyl, allyl, isopropenyl radical, a mercaptoalkyl radical, a sulfanalkyl radical, a ureidoalkyl radical, an acryloxyalkyl radical, or a linear, branched or cyclic alkoxy radical with 1 to 4 C atoms, and - R9 corresponds to an alk radical yl with 1 to 4 linear, branched and / or cyclic C atoms.