prov:value
| - A process of purification of a polymer which comprises a cycloolefin copolymer which is prepared by polymerization of from 30 to 99.9% by weight, based on the total amount of monomers, of at least one symmetrical, polycyclic olefin of the formula I, II, III, IV, V or VI in which R1, R2, R3, R4, R5, R6, R7, and R8 are identical or different and are a hydrogen atom, a (C6-C16)-aryl or a (C1-C8)-alky
|