| http://www.w3.org/ns/prov#value | - Examples are N,N'-(??-aminopropyl)-5,5-dimethyl-hydantoin or -benzimidazolone and those of the formula ##STR15## in which Rb is alkylene with 1 to 12, preferably 1 to 4, C atoms, or ##STR16## in which Rc is a hydrogen atom or methyl and a is an integer from 1 to 20.
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