prov:value
| - In the process according to the invention, at least one polycyclic olefin of the formula I, II, III, IV, V or VI, preferably a cycloolefin of the formula I or III, 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, where identical radicals in the different formulae may have different meanings, is polymerized.
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