| http://www.w3.org/ns/prov#value | - The third ethylenically unsaturated monomer may be selected from the group consisting of unsaturated nitriles such as acrylonitrile and methacrylonitrile, ??,??-unsaturated monocarboxylic acids such as acrylic acid and methacrylic acid, C1 -C4 alkyl esters of ??,??-unsaturated mono-carboxylic acids such as methyl methacrylate and ethyl acrylate, and mixtures thereof.
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