| http://www.w3.org/ns/prov#value | - (2) Alkylbetaines or sulfobetaines represented by the following formula ##STR6## in which R9 represents an alkyl or alkenyl group having from 10 to 20 carbon atoms, R10 and R11 independently represent an alkyl group having from 1 to 4 carbon atoms, p is an integer of 1 to 3, and X' represents --COO.sup.??? or --SO3.sup.??? group.
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