| http://www.w3.org/ns/prov#value | - There are a large number of amphoteric surfactants that are suitable for use in the present invention, including, for example, the well-known betaines, sultaines, glycinates and propionates that may generally be represented by the following structural formulae: ##STR5## In these formulae, R' is an alkyl or alkylamide group containing from 10 to 20 carbon atoms.
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