| http://www.w3.org/ns/prov#value | - As the segment R2, a segment obtained by the radical polymerization of a radically polymerizable monomer, such as methyl methacrylate, ethyl methacrylate, vinyl acrylate, butyl acrylate, styrene and acrylonitrile; and a segment obtained by the ring-opening polymerization of a cyclic monomer, such as lactone, lactam, 2-oxazoline and cyclic ethers, are preferred.
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