| http://www.w3.org/ns/prov#value | - The invention thus relates to a process for the preparation of a cycloolefin polymer or copolymer by polymerization of from 0.1 to 100% by weight, based on the total amount of monomers, of at least one monomer of the formula I, II, III, IV, V or VI ##STR1## in which R1, R2, R3, R4, R5, R6, R7 and R8 are identical or different and are a hydrogen atom or a C1 -C8 -alkyl radical, it being possible fo
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