| http://www.w3.org/ns/prov#value | - The most useful polymers are homopolymers and copolymers with 5-95 percent, preferably 5-50 percent and most desirably 5-30 percent, of an unsaturated acid (e.g., maleic acid) or a derivative thereof, especially an acrylic monomer such as acrylic or methacrylic acid or a salt or amide thereof, notably acrylamide, methacrylamide, N-methylacrylamide, diacetone acrylamide and the like.
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