| http://www.w3.org/ns/prov#value | - In another embodiment, the synthetic polymer comprises one or more acrylamide derivative of general formula I, one or more hydrophilic co-monomer of general formula II and one or more derivatised carboxylic acid of general formula III, as described above, wherein the term ???lower alkyl??? refers to to a cycloalkyl group having 3 to 8 carbon atoms, such as cyclopropyl, cyclobutyl, cyclopentyl and
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