| http://www.w3.org/ns/prov#value | - p is an integer from 0 to 4, R3 and R4 independently of one another are hydrogen, C1- to C40-alkyl or C6- to C40-alkenyl, where the alkyl and alkenyl radicals can carry at least one ionogenic and/or ionic group which is chosen from ???COOY, ???SO3Y and ???PO3Y, where Y is H, Li, Na, K or ammonium, where, if p=0, at least one of the radicals R3 or R4 is a C1- to C40-alkyl or C6- to C40-alkenyl radi
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