| http://www.w3.org/ns/prov#value | - The composition may further comprise another cationic surfactant such as a quaternary ammonium salt having the formula (15) or (16) in which at least one of R5, R6, R7 and R8, independently of one another, is an alkyl or an alkenyl, each of which may have a substituent such as an alkoxy, an alkenyloxy, an alkanoylamino and alkenoylamino, having in total 8 to 28 carbon atoms and the balance is benz
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