Covalently-nucleophilic self-curing systems

摘要

Covalent-nucleophilic self-hardening systems (A) based on polymerisable and hydrolytically condensable and/or condensed Si cpds. consist of components 1 and 2 which opt. contain normal additives and fillers and opt. other copolymerisable monomers and/or oligomers and/or other hydrolytically condensable and/or condensed cpds. of Si and opt. of Al, Ti, Zr, B, P, Sn, Pb, transition metals, lanthanides or actinides. Component 1 contains Si cpd(s). of formula (I), opt. in (pre)condensed form: (XaRbSiÄ(R'A)cÜ(4-a-b))xB (I). A = O, S, PR'', POR'', NHCOO or NHCONR''; B = organic residue derived from a cpd. B' with at least one (for c = 1 nd A = NHCOO or NHCONR'') or at least 2 C=C double bonds and 5-50 atoms; R = alkyl, alkenyl, aryl, aralkyl or alkaryl; R' = alkylene, arylene or alkylene-arylene; R'' = H, alkyl or aryl; X = H, halo, OH, alkoxy, acyloxy, alkylcarbonyl, alkoxycarbonyl or NR''2; a = 1, 2 or 3; b = 0, 1 or 2; c = 0 or 1; x = a no. corresp. to the max. no. of double bonds in cpd. B' minus 1 or equal to the no. of double bonds in B' when c = 1 and A = NHCOO or NHCONR'' (the above alkyl or alkenyl gps. are opt. substd. linear, branched or cyclic gps. with 1 or 2 to 20C atoms, aryl = opt. substd. phenyl, naphthyl or biphenyl and the other gps. are derived from these). Component 2 contains cpd(s). with at least one substd. and/or unsubstd. amino gp.