Patent ID: 7087780

Claim:
A process for producing protic ammonium tetrakis( F aryl)borate or an onium tetrakis( F aryl)borate, from a solution or slurry of an alkali metal tetrakis( F aryl)borate in a liquid ethereal medium or a liquid hydrocarbyl medium, which process comprises the steps of: i) substituting said liquid ethereal medium or liquid hydrocarbyl medium with at least one halogenated hydrocarbon, without isolating the alkali metal tetrakis( F aryl)borate:, to form a new slurry or solution; and ii) mixing together at least a portion of said new slurry or solution produced in i) with a salt selected from a) a protic ammonium salt, wherein the protic ammonium cation has the formula [R 3 NH]⊕, in which each R is independently a hydrocarbyl group containing up to about thirty carbon atoms, and b) an onium salt, wherein the onium cation has the formula [ER n ]⊕, wherein E is an element of any of Groups 15–17 of the Periodic Table, wherein each R is independently a hydrocarbyl group containing up to about thirty carbon atoms, and wherein n is equal to the valence of E plus one; wherein each of the F aryl groups is a fluorine-containing aryl group, each of which has bonded directly to an aromatic ring at least two fluorine atoms, or at least two perfluorohydrocarbyl groups, or at least one fluorine atom and at least one perfluorohydrocarbyl group.