Synthesis and Characterization of New Soluble Polyamides from 9,9-Bis[4-(chloroformylphenoxy)phenyl]xanthene and Various Aromatic Diamines
作者:Jianwen Jiang、Shuiping Huang、Yuan Liu、Shouri Sheng、Zhenzhong Huang、Caisheng Song
DOI:10.1002/cjoc.201090022
日期:2010.1
solution containing pyridine (Py). All new polyamides were amorphous and readily soluble in various polar solvents such as DMAc, N,N‐dimethylformamide (DMF), N‐methyl‐2‐pyrrolidone (NMP) and Py. These polymers showed relatively high glass transition temperatures between 236 and 298°C, decomposition temperatures at 10% weight loss ranging from 490 to 535°C and 483 to 515°C in nitrogen and air, respectively
以一锅,两步合成方法从黄酮中合成了9,9-双(4-羟苯基)x吨(BHPX),产率为82%。从四氟苯甲腈的亲核氟置换与BHPX的双酚酸二钾的三步合成三个新步骤合成了一种新的二酰氯单体9,9-双[4-(氯甲酰基苯氧基)苯基] B吨(BCPX)。中间体双(醚腈),然后用亚硫酰氯氯化。通过BCPX与N,N中各种芳族二胺的低温缩聚反应,制备了几种具有固有粘度(0.72-0.98 dL / g)的具有醚和庞大的x吨基团的新型芳香族聚酰胺。含吡啶(Py)的二甲基乙酰胺(DMAc)溶液。所有新的聚酰胺都是无定形的,易于溶于各种极性溶剂,例如DMAc,N,N-二甲基甲酰胺(DMF),N-甲基-2-吡咯烷酮(NMP)和Py。这些聚合物在236至298°C之间显示出较高的玻璃化转变温度,失重10%时在氮气和空气中的分解温度分别为490至535°C和483至515°C,而在700°C时焦炭产率为700%。氮含量高