| http://www.w3.org/ns/prov#value | - wherein n is an integer of 2 to 3; R???, R???and R?????? are independently selected from the group consisting of H,C1 to C16 alkyl, aryl, arylamine, alkylamine, alkaryl and aralkyl; X is selected from the group consisting of O and NH; and Y ??? is an acceptable anionic counterion to the N+ of the quaternary amine.
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