Zobrazeno 1 - 10
of 52
pro vyhledávání: '"GEORGE M. FOHLEN"'
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 21:1025-1032
Thermally stable poly(metal phthalocyanine)imide copolymers were prepared with metal(11) 4,4′,4″,4‴ -phthalocyanine tetraamines, 4,4′ -diamino diphenyl ether, and 3,3′,4,4′ -benzophenone tetracarboxylic dianhydride. Variables such as mola
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 23:1677-1686
The study described here deals with the methods of synthesis of two new bisphthalonitrile derivatives with ester—imide linkages and their polymerization. Optimum conditions for the synthesis and characterization of the bisphthalic anhydrides, bisph
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 22:1141-1151
A fire- and heat-resistant polymer was obtained by the thermal polymerization of bismaleimido-substituted 2,2-bis(anilino)-4,4,6,6-tetrakis-(4-Aminophenoxy)-cyclotriphosphazene. The thermal stabilities of the polymer were evaluated in nitrogen and in
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 24:2415-2424
Aminophenoxycyclotriphosphazenes have been used as curing agents for epoxy resins. The thermal curing was performed in stages at 120–125 and 175–180°C followed by postcuring at 225°C to give tough brown polymers. The thermal curing reaction was
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 22:927-943
High-strength fire- and heat-resistant polymers were obtained by the thermally induced melt-polymerization of maleimido-phenoxy cyclotriphosphazenes linked by hexafluoroisopropyliden-ediphthalimide groups. These polymers show good thermal stability a
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 21:245-267
Various 4,4′-bis{N2-[4-(4-aminophenoxy)phenyl]aspartimido}diphenylmethane (APADM)-type precursors were synthesized by Michael-type reaction of an aromatic bismaleimide (1mol) with an aromatic diamine (2 mol) in an aprotic solvent. The structures of
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 21:111-120
The reactions of 4-aminophthalonitrile (APN) with 3,3′,4,4′-benzophenone tetracarboxylic dianhydride (BPTDA), and with 1,2,3,4-benzenetetracarboxylic dianhydride (PMDA) have been studied to optimize the conditions for the synthesis of monomeric t
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 21:589-597
The thermal reactions of pure metal(11) 4,4′,4″,4′″-phthalocyanine-tetracarboxylic acids of copper, cobalt, and nickel at 350–400°C in vacuum have been studied using Fourier transform infrared spectrometry, gas chromatography, and mass spe
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 21:565-578
4,4′-Bis(N2)-{4-[4-(2,3-bicyclo-[2.2.1]hept-5-ene-dicarboximido)phenoxy]-phenyl(-aspartimido)-di-phenyl ether (2NAD/1020) and various similar polymer percursors were synthesized from bismaleimides by the Michael addition of two moles of aromatic di
Publikováno v:
Macromolecules. 16:1250-1257
4-Aminophenoxy cyclotriphosphazenes are reacted with maleic anhydride to produce maleamic acids which are converted to the maleimides. The maleimides are polymerized. By selection of starting materials (e.g. hexakis amino or trisaminophenoxy-trisphen