Introduction of reactive functionality by the incorporation of divinylbiphenyl in ethylene copolymerization with styrene or 1‐hexene using aryloxo‐modified half‐titanocenes and MAO catalysts |
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| Authors: | Wannida Apisuk Boonyarach Kitiyanan Hyun Joon Kim Dong Hyun Kim Kotohiro Nomura |
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| Affiliation: | 1. Department of Chemistry, Tokyo Metropolitan University, , Hachioji, Tokyo, 192–0397 Japan;2. The Petroleum and Petrochemical College, Chulalongkorn University, , Bangkok, 10330 Thailand;3. Korea Institute of Industrial Technology, 1271‐18, Sa‐3‐Dong, Sangnok‐Gu, , 426–910 Republic of Korea |
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| Abstract: | An efficient introduction of vinyl group into poly (ethylene‐co‐styrene) or poly(ethylene‐co?1‐hexene) has been achieved by the incorporation of 3,3′‐divinylbiphenyl (DVBP) in terpolymerization of ethylene, styrene, or 1‐hexene with DVBP using aryloxo‐modified half‐titanocenes, Cp′TiCl2(O?2,6‐iPr2C6H3) [Cp′ = Cp*, tBuC5H4, 1,2,4‐Me3C5H2], in the presence of MAO cocatalyst, affording high‐molecular‐weight polymers with unimodal distributions. Efficient comonomer incorporations have been achieved by these catalysts, and the content of each comonomer could be varied by its initial concentration charged. The postpolymerization of styrene was initiated from the vinyl group remained in the side chain by treatment with n‐BuLi. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 2581–2587 |
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| Keywords: | catalysts copolymer copolymerization ethylene functional polymer functionalization of polymers graft copolymers metal‐catalyzed polymerization metal‐organic catalysts/organometallic catalysts polyolefins titanium |
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