| 초록 |
Cyclopentadiene or its spontaneous Diels-Alder adduct, dicyclopentadiene, is a major constituent in the C5 stream of naphtha cracking. 5,6-Dihydrodicyclopentadiene (HDCPD) is an attractive cycloolefin monomer. It can be prepared inexpensively from dicyclopentadiene (DCPD) through regioselective hydrogenation. Because of the lower reactivity of the 2,3-double bond, the copolymerization of HDCPD and ethylene has not been realized yet. When copolymerization is attempted with CGC, only pure polyethylene not containing any HDCPD unit is obtained. we report successful HDCPD/ ethylene copolymerization employing complex 1 as catalyst precursor. Once the alternating copolymerization is realized, the obtained polymer structure is close to that of Zeon’s resin obtained through the ROMP of 1,4,5,8-dimethano- 1,2,3,4,4a,5,8,8a-octahydronaphthalene (DMON). |
