Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Miharu Atsumi"'
Publikováno v:
Polymer Journal. 26:579-585
Dipole Moments of Isotactic and Syndiotactic Poly(methyl methacrylate) and Their Temperature Dependence
Spontaneous hydrolytic degradability of copolyesters having tetrahydropyran rings in their backbones
Publikováno v:
Journal of Applied Polymer Science. 51:1035-1043
Homo- and copolyesters, containing 2,5-linked tetrahydropyran rings in their backbones, were prepared by cationic ring-opening polymerization of bicyclic lactones, 2,6-dioxabicyclo [2.2.2] octan-3-one (1), and its 4-methoxy-carbonyl and 4-methoxy-car
Publikováno v:
Journal of Applied Polymer Science. 51:1045-1051
Biodegradability of several homo- and copolyesters, containing tetrahydropyran rings in their backbones with or without pendant groups, was investigated by degradation tests, both in soil and in an activated sludge. These polyesters were hydrolytical
Publikováno v:
KOBUNSHI RONBUNSHU. 50:703-713
双環ラクトンの開環重合およびヒドロキシカルボン酸またはそのエステルの重縮合により, 主鎖にテトラヒドロピラン環あるいはテトラヒドロフラン環をもつ一連のポリエステルを合成
Autor:
Masahiko Okada, Miharu Atsumi
Publikováno v:
Polymer Journal. 24:1109-1117
New polyesters (8–10) containing tetrahydropyran rings in their backbone chains and ester groups in the side chains were synthesized by cationic ring-opening polymerization of 4-substituted 2,6-dioxabicyclo[2.2.2]octan-3-one derivatives (5–7) by
Publikováno v:
Die Makromolekulare Chemie. 192:1715-1725
A polyester composed of trans-2,5-linked tetrahydropyran rings (4t) was synthesized by direct polycondensation of trans-5-hydroxytetrahydropyran-2-carboxylic acid (5t) using N-methyl-2-chloropyridinium iodide or triphenylphosphine and hexachloroethan
Publikováno v:
Makromolekulare Chemie. Macromolecular Symposia. :355-364
Several bicyclic oxalactones and oxalactams having a bicyclo[2.2.2]octane skeleton were synthesized and their ring-opening polymerizations were investigated under various conditions. These monomers, except 2-oxa-6-azabicyclo[2.2.2]octan-5-one (23), g
Publikováno v:
Macromolecules. 23:678-680
Le phosphore de diphenyl trimethylsilyl et le methanesulfonate de trimethylsilyl n'amorcent pas la polymerisation de styrenes riches en electrons et d'acetals cycliques. Seul le dioxepanne-1,3 polymerise en presence de MeSiOSO 2 Me et d'une base enco
Publikováno v:
Die Makromolekulare Chemie. 188:1137-1146
Permeation of alkali metal picrates through acetylcellulose membranes containing synthetic macrolides (4 and 5) was examined in tris-buffer solutions (pH 7,8) to evaluate the effectiveness of the macrolides as ion carriers. The macrolides 4 and 5 are
Publikováno v:
Macromolecules. 20:1199-1204
Polymerisation cationique (acide Lewis), dans le dichloromethane, a −90, −60 et −30°C. Decomposition autour de 150°C