prov:value
| - A process for the preparation of a cycloolefin polymer or copolymer with a narrow molecular weight distribution (Mw/Mn) by polymerization of 0.1 to 100% by weight, based on the total amount of the monomers, of at least one monomer of the formulae I, II, III, IV, V or VI ##STR11## 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 radica
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