| http://www.w3.org/ns/prov#value | - The copolymers are preferably prepared by polymerizing the monomers in solvents, especially in solvents with a boiling range from 50 to 150??? C., preferably from 60 to 120??? C., using the customary amounts of polymerization initiators, which are generally from 0.01 to 10, in particular from 0.1 to 4% by weight, based on the overall weight of the monomers.
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