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Facile Synthesis of Hydroxy‐Functionalized Cycloolefin Copolymer Using ω‐Alkenylaluminium as a Comonomer
Author(s) -
Shiono Takeshi,
Sugimoto Mitsunori,
Hasan Tariqul,
Cai Zhengguol
Publication year - 2013
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201300347
Subject(s) - comonomer , norbornene , copolymer , polymer chemistry , chemistry , polymerization , glass transition , monomer , oxygen , catalysis , organic chemistry , polymer
Copolymerization of norbornene and 7‐octenyldiisobutylaluminium is conducted by the catalytic system of ansa ‐dimethylsilylene(fluorenyl)(amido)dimethyltitanium, Me 2 Si(N t Bu)(fluorenyl)TiMe 2 ( 1 ), activated with Ph 3 CB(C 6 F 5 ) 4 to produce copolymers with pendant alkylaluminium groups. The termination of the copolymers with methanol gives poly(norbornene‐ co ‐oct‐1‐ene). Termination with oxygen gas gives poly(norbornene‐ co ‐oct‐1‐ene‐ co ‐oct‐7‐en‐1‐ol) because the oxidation of the pendant alkylaluminium groups with oxygen is not quantitative. Terpolymerization of norbornene, oct‐1‐ene, and 7‐octenyldiisobutylaluminium are also conducted, where the content of the hydroxy groups and the glass transition temperature are independently controlled by the molar ratio of each comonomer in feed.