Katsuhiko Takenaka
Tokyo Institute of Technology
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Featured researches published by Katsuhiko Takenaka.
Polymer | 1987
Akira Hirao; Akihiko Yamamoto; Katsuhiko Takenaka; Kazuo Yamaguchi; Seiichi Nakahama
Abstract Anionic polymerizations of 2-(4-vinylphenyl)ethoxy(trialkyl)silanes and 2-(4-vinylphenyl)ethoxy(t-butoxydimethyl)silane were investigated with oligo(α-methylstyryl)dilithium or -dipotassium as initiator in tetrahydrofuran at −78°C. These monomers readily polymerized to form ‘living polymers’. Subsequent deprotection of the silyl groups from the resulting polymers gave poly[2-(4-vinylphenyl)ethanol]s of the desired molecular weights with narrow molecular weight distributions ( M w M n = 1.05–1.21 ). The living polymers of the silyl ethers of 2-(4-vinylphenyl)ethanol can initiate further polymerization of either styrene or α-methylstyrene, yielding new block copolymers containing 2-(vinylphenyl)ethanol blocks.
Macromolecular Chemistry and Physics | 1985
Akira Hirao; Katsuhiko Takenaka; S. Packirisamy; Kazuo Yamaguchi; Seiichi Nakahama
Die Makromolekulare Chemie, Rapid Communications | 1982
Akira Hirai; Kazuo Yamaguchi; Katsuhiko Takenaka; Ken Suzuki; Seiichi Nakahama; Noboru Yamazaki
Macromolecular Chemistry and Physics | 1995
Katsuhiko Takenaka; Akira Hirao; Seiichi Nakahama
Polymer International | 1995
Katsuhiko Takenaka; Akira Hirao; Seiichi Nakahama
Journal of Polymer Science: Polymer Letters Edition | 1983
Kazuo Yamaguchi; Akira Hirao; Ken Suzuki; Katsuhiko Takenaka; Seiichi Nakahama; Noboru Yamazaki
Macromolecular Chemistry and Physics | 1992
Katsuhiko Takenaka; Akira Hirao; Seiichi Nakahama
Archive | 1982
Akira Hirao; Seiichi Nakahama; Katsuhiko Takenaka; Kazuo Yamaguchi; Sho Yamazaki
Archive | 1982
Akira Hirao; Seiichi Nakahama; Katsuhiko Takenaka; Kazuo Yamaguchi; Sho Yamazaki
Archive | 1987
Akira Hirao; Seiichi Nakahama; Katsuhiko Takenaka
