prov:value
| - Illustrative polymers include acrylic or methacrylic acid polymers, particularly derivatives thereof, such as amides and esters, both as homo- or copolymers, having side groups, such as hydroxyethyl, aminopropyl, methyl, ethyl, 2-aminoethyl, 2-ammoniumethyl, or the like; polyvinyl alcohol and esters thereof, e.g. acetate or fatty acids of from about 8 to 100 carbon atoms, particularly of from abou
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