Fu Ju-sun
2007
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Journal
Insulating Materials
Abstract
The compound of 2,2-bis(3-nitro-4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropane(BNHPFP)was synthesized through the reaction between 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropane(BHPFP)and potassium nitrate(PN)in the presence of trifluoroacetic acid(TFAA)within the temperature range of 20~30 ℃,the obtained BNHPFP was further reduced into the fluorine-containing polybenzoxazole monomer-2,2-bis(3-amino-4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropane(BAHPFP)in the system of Pd/C-H2.Moreover,the obtained compounds were characterized by differential scanning calorimeter(DSC),WRR optical melting point testing technique,Fourier transfer infrared spectrometer(FT-IR),element analysis and nuclear magnetic resonance technology(1H-NMR).