| http://www.w3.org/ns/prov#value | - , methyl methacrylate, ethyl methacrylate, Z-vinyl pyridine and similar materials and mixtures thereof such as the polymers obtained by interpolymerizing 3, 4 or more monomers, for example, the polymer obtained by interpolymerizing butadiene-1,3, styrene and acrylonitrile. ln the foregoing rubbers the conjugated diene generally amounts to at least 50% by weight of the copolymer and preferably amou
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