| http://www.w3.org/ns/prov#value | - oxylic acids and optionally other ionic or nonionic monomers. [0106] Other polymers suitable for the purposes of the invention are water-soluble ???amphopolymers???. ???Amphopolymers??? is the generic term for amphoteric polymers, i.e. polymers which contain both free amino groups and free ???COOH or ???SO3H groups in the molecule and which are capable of forming inner salts, zwitterionic polymers
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