Hirotoshi Fujie
Wako Pure Chemical Industries, Ltd
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Featured researches published by Hirotoshi Fujie.
Journal of Macromolecular Science, Part A | 1992
Hirotoshi Fujie; Kazuo Shiraki; Tsutomu Miyagawa; Noriaki Minamii; Bunichiro Yamada; Takayuki Otsu
Abstract A series of cyclic azoamidinium chlorides as water-soluble initiators were prepared by reactions of the iminoether derived from 2,2′-azobisisobutyronitrile with substituted alkylene diamines. The first-order rate constants for the decomposition of the azoamidinium salts varied from 0.59 × 10−5 to 14.1 × 10−5 s−1 with the ring size and the alkyl substitution of the ring. Decomposition of 2,2′-azobis[2-(imidazoline-2-yl)propane] dihydrochloride was found to be accelerated by alkyl substitution on the imidazolinium ring. However, the azoamidinium compounds having larger rings, 2,2′-azobis[2-(3,4,5-trihydropyrimi-dine-2-yl)propane] dihydrochloride and 2,2′-azobis[2-(4,5,6,7-tetra-hydro-1H-1,3-diazepine-2-yl)propane] dihydrochloride, decomposed at a slower rate than the unsubstituted azobis[2-(imidazoline-2-yl)-propane] dihydrochloride. These new initiators were found to be capable of initiating radical polymerizations of acrylamide and vinyl acetate.
Archive | 1991
Fumiyoshi Urano; Masaaki Nakahata; Hirotoshi Fujie; Keiji Oono
Archive | 1996
Fumiyoshi Urano; Hirotoshi Fujie; Keiji Oono
Archive | 1995
Fumiyoshi Urano; Hirotoshi Fujie; Keiji Oono; Takaaki Negishi
Archive | 1991
Fumiyoshi Urano; Masaaki Nakahata; Hirotoshi Fujie; Keiji Oono
Archive | 1998
Motoshige Sumino; Hirotoshi Fujie; Akiko Katsuyama; Masayuki Endo
Archive | 1991
Fumiyoshi Urano; Masaaki Nakahata; Hirotoshi Fujie; Keiji Oono
Archive | 1998
Hirotoshi Fujie; Tohru Souki; Yukiko Uehara
Archive | 1998
Hirotoshi Fujie; Tohru Souki; Yukiko Uehara
Archive | 1998
Hirotoshi Fujie; Toru Soki; Yukiko Uehara; 有紀子 上原; 徹 左右木; 啓利 藤江