High Temperature and Organosoluble Poly(amide- imide)s Based on l,4-Bis[4-aminophenoxy]butane and Aromatic Diacids by Direct Polycondensation: Synthesis and Properties

摘要

A series of high temperature and organosoluble poly(amide-imide)s 8a-g were prepared by direct polycondensation from l,4-bis[4-aminophenoxy]butane 4 and various aromatic diacids 7a-g in a medium consisting of N-methy1-2-pyrrolidone (NMP)/triphenyl phosphite (TPP)/ calcium chloride (CaCl_2)/pyridine system. Aromatic diacids 7a-g were synthesized by reaction of 3,3',4,4'-benzophenone tetra carboxylic dianhydride 5 and various amino acids 6a-g. All of the above polymers were fully characterized by 'H-NMR and FT-IR spectroscopy, inherent viscosity, solubility test and thermogravimetric analysis (TGA). The resulted polyamides (PAs) 8a-g have showed admirable good inherent viscosities, thermal stability and solubility.