| http://www.w3.org/ns/prov#value | - The following is an example of a possible cyclic fluorinated complexing agent within the scope of the present invention: ##STR19## where Y may be --CH2 COOR1 or --CH2 CONR1 R2 and where R1 and R2 are CF3, or fluorinated alkyl, mono or polyhydroxyalkyl, mono or polyalkoxyalkyl, or aryl having from 1 to 10 carbon atoms.
|
