| http://www.w3.org/ns/prov#value | - (a) a quaternary ammonium compound having the formula ##STR1## wherein each R.sub.2 substituent is a C1-C6 alkyl or hydroxyalkyl group, or mixture thereof; each R1 substituent is a C14-C22 hydrocarbyl group, or mixture thereof; and X.sup.- is a
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