Zobrazeno 1 - 10
of 175
pro vyhledávání: '"HEIMEI YUKI"'
Autor:
Koichi Hatada, Heimei Yuki
Publikováno v:
Advances in Polymer Science Volume 31 ISBN: 9783540092001
A large number of methacrylates containing various ester groups have been polymerized and copolymerized with radical and anionic initiators, such as organoalkali metal, magnesium and aluminum compounds. These polymerization and copolymerization are r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7aea6568b81c04958a0a7b0d7eb8555b
https://doi.org/10.1007/bfb0103459
https://doi.org/10.1007/bfb0103459
Publikováno v:
Die Makromolekulare Chemie. 178:617-621
Publikováno v:
Polymer Journal. 11:323-330
Methyl α-phenylacrylate (MPhA) was copolymerized with methacrylates which have ester groups of various sizes, such as benzyl, α-methylbenzyl, diphenylmethyl, α,α-dimethylbenzyl, 1,1-diphenylethyl, and trityl groups. The copolymerization was carri
Publikováno v:
Macromolecules. 11:719-723
Publikováno v:
Journal of Polymer Science: Polymer Letters Edition. 14:395-399
Autor:
Kunio Miki, Nobutami Kasai, Yoshio Okamoto, Heimei Yuki, Eiji Yashima, Koichi Hatada, Hiroyuki Kageyama
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 22:1831-1837
Asymmetric selective (or stereoelective) polymerization of racemic 1,2-diphenylethyl methacrylate (DPEMA) with ethylmagnesium bromide (EtMgBr)-(−)-sparteine catalyst was studied in toluene at −78°C. In the polymerization (S) enantiomer was consu
Publikováno v:
Journal of Polymer Science: Polymer Letters Edition. 13:721-724
Publikováno v:
Polymer Journal. 15:719-725
13C NMR spectra of isotactic-rich poly(alkyl vinyl ether)s were measured in toluene-d8 at 110°C, with some improvements on peak separation. The 13C spin-lattice relaxation times (T1’s) for syndiotactic sequences were consistently longer than those
Publikováno v:
Polymer Journal. 13:1045-1054
Perdeuterated methyl methacrylate (MMA-d8) was polymerized by C4H9Li in THF at −78°C, and the resultant polymer and oligomer were analyzed for the initiator fragment by 1H NMR spectroscopy. The structure of the oligomer was also studied by mass sp
Publikováno v:
Die Makromolekulare Chemie. 179:485-496
Isotactic and syndiotactic poly(alkyl methacrylate)s (R = CH3, C2H5, isoC3H7, n-C4H9 and t-C4H9) were prepared by anionic mechanism and the spin-lattice relaxation times T1 of individual carbons and protons were measured mainly in toluene-d8 by the i