Abstract
The synthesis of norbornene copolymer with hydroxy groups was performed by the copolymerization of norbornene (NB) with 9-(7-octenyl)-borabicyclo[3.3.1]nonane (OctBBN) using ansa-dimethylsilyl(fluorenyl)(amido)titanium catalyst (1) activated by Ph3CB(C6F5)4 and successive oxidation. The glass transition temperature (Tg) of the copolymer was higher than the polymer with the same hydroxy group content synthesized by the copolymerization of NB and ω-alkenylaluminum. The 13C NMR spectrum of the copolymer clearly showed that alkylborane moiety was converted quantitatively to hydroxy groups. Copolymerization of NB and OctBBN by the 1-MMAO/BHT system proceeded in a pseudo-living manner without chain transfer reaction.
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