Process for producing cycloolefin random copolymers

DETAILED DESCRIPTION OF THE INVENTION The processes according to the invention will now be illustrated in detail.
First, the steps of the first process for the production of cycloolefin random copolymers according to the invention will be specifically described in sequence.
Cycloolefin monomers In the first process according to the invention, at least one cycloolefin of the general formula [I] noted below is copolymerized with ethylene.
##STR5## In the general formula [I], n is 0 or a positive integer, and R.
sup.
1 to R.
sup.
12 are the same or different, and each represents a hydrogen or halogen atom or a hydrocarbon group, or R.
sup.
9 (or R.
sup.
10) and R.
sup.
11 (or R.
sup.
12), when taken together, may form a mono- or poly-cyclic ring.
The cycloolefins represented by the general formula [I] can be easily prepared by condensation of cyclopentadienes with appropriate olefins by Diels-Alder reaction.
Examples of the cycloolefins represented by the general formula [I] include such compounds as exemplified in Table 1, and in addition to 1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, such octahydronaphthalenes as 2-methyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2-ethyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2-propyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2-hexyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2-stearyl-1,4,5,8-dimethano-1,2,3,4,4a5,8,8a-octahydronaphthalene, 2,3-dimethyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2-methyl-3-ethyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2-chloro-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2-bromo-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2-fluoro-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2,3-dichloro-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2-cyclohexyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene, 2-n-butyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene and 2-isobutyl-1,4,5,8-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalene