Initiators for materials which can be polymerized cationically

Abstract

Initiator compositions for materials which can be polymerized cationically are described, these containing i) an anhydride of a polycarboxylic acid, a polyisocyanate, a cyclic carbonate, a lactone or a mixture of such compounds, and dissolved therein ii) at least one compound of the formula I [M.sup.+n (L).sub.x ].sup.n+ nX.sup.- (I) in which n is 2 or 3, M is a metal cation selected from the group consisting of Zn.sup.2+, Mg.sup.2+, Fe.sup.2+, Co.sup.2+, Ni.sup.2+, Cr.sup.2+, Ru.sup.2+, Mn.sup.2+, Sn.sup.2+, VO.sup.2+, Fe.sup.3+, Al.sup.3+ and Co.sup.3+, X.sup.- is an anion which is selected from the group consisting of AsF.sub.6.sup.-, SbF.sub.6.sup.-, BiF.sub.6.sup.- and derivatives derived from these anions in which a fluorine atom is replaced by hydroxyl groups, or in which up to 50% of the anions X.sup.-, based on the total amount of anions, can also be any desired anions, L is water or an organic .sigma.-donor ligand which contains, as ligand sites, one or more functional radicals selected from the group consisting of --CO--, --CO--O--, --O--CO--O-- and --O--, and which forms .sigma.-bonds with the central atom via the oxygen atom or via the oxygen atoms, and x is an integer from 0 to 6, it being possible for the ligands L to differ within the context of the definitions given.

Dependencies are inferred from the claim text.