http://www.w3.org/ns/prov#value | - The polymeric products of the present invention are prepared by polymerizing a major proportion of an olefinically unsaturated nitrile, such as acrylonitrile, and a minor proportion of an ester of an olefinically unsaturated carboxylic acid, such as methyl acrylate, or a vinyl ester, such as vinyl acetate, and a vinyl aromatic monomer, such as styrene, optionally in the presence of a preformed rub
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