| http://www.w3.org/ns/prov#value | - Bisquaternary ammonium compounds suitable for the present invention include (but are not limited to) those of the general formula ##STR8## wherein each of R1, R2, R3, R4, R5, and R6, independently of the others, is an alkyl group, preferably with from 1 to about 6 carbon atoms (and wherein the alkyl group can be substituted with, for example, hydroxide groups, halide groups, or the like, R7 is an
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