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- W2356133343 abstract "New AB-PBO monomers,such as 5-amino-6-hydroxy-2-(4-methoxycarbonylphenyl)benzoxazole(MAB)and 5-amino-6-hydroxy-2-(4-carbonylphenyl)benzoxazole(ABA),have been synthesized at 98% and 99% purity from 4-amino-6-nitroresorcinol hydrochloride(ANR HCl)and terephthalic acid mono-methylester(TAM);Their equi-molar polycondensation groups property and high-stability(e.g.anti-oxidation and thermo-decomposition temperature)have been introduced and measured respectively.A new PBO resin preparation method has been found by application of AB-type monomer in homo-polycondensation,and this process has many advantages such as simplicity of raw materials preparation and obtainment,mild hydrogenation condition,excellent monomer stability,easy operation and short polymerization time.It is better than the process reported in literature using AA-type(DAR 2HCl)plus BB-type(TPA)monomers co-polycondensation.An idea of improving further the compressive,adhesion properties of PBO is also suggested." @default.
- W2356133343 created "2016-06-24" @default.
- W2356133343 creator A5001500156 @default.
- W2356133343 date "2007-01-01" @default.
- W2356133343 modified "2023-09-23" @default.
- W2356133343 title "New AB-PBO Monomers & Their Synthesis,Characterization and Application" @default.
- W2356133343 hasPublicationYear "2007" @default.
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