| http://www.w3.org/ns/prov#value | - R1???C(O)???N(R2)???(C(R3)2)n???N(R2)2 (+)???(C(R3)2)n???COO(???) wherein each R1 is a hydrocarbon, e.g. an alkyl group containing from 8 up to 20, preferably up to 18, more preferably up to 16 carbon atoms, each R2 is either a hydrogen (when attached to the amido nitrogen), short chain alkyl or substituted alkyl containing from one to 4 carbon atoms, preferably groups selected from the group cons
|
