| http://www.w3.org/ns/prov#value | - wherein each R5 group is independently selected from C1-4 alkyl, hydroxyalkyl or C2-4 alkenyl; and wherein each R6 is independently selected from C8-28 alkyl or alkenyl groups; E is an ester moiety i.e., ???OC(O)??? or ???C(O)O???, n is an integer from 0 to 5, and X??? is a suitable anion, for example chloride, methosulfate and combinations thereof.
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