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- W2389157462 abstract "3,3',4,4'-tetraaminodiphenyl ether was prepared with 4,4'-diaminodiphenylether as starting material in five steps by N-acylation,nitration,alkali hydrolysis,reduction and neutralization in overall yield of about 52.8%.The chemical structures of target compound and its intermediates were characterized by Fourier transform infrared spectroscope(FT-IR) and differential scanning calorimetry(DSC) technology.Moreover,polybenzimidazole resin(PBI) from 3,3',4,4'-tetraaminodiphenyl ether monomer was further polymerized in the phosphoric acid and phosphorus pentoxide system." @default.
- W2389157462 created "2016-06-24" @default.
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- W2389157462 date "2009-01-01" @default.
- W2389157462 modified "2023-09-26" @default.
- W2389157462 title "Synthesis and Characterization of 3,3',4,4'-Tetraaminodiphenyl Ether and Polymerization of Polybenzimidazole Resin" @default.
- W2389157462 hasPublicationYear "2009" @default.
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