Synthesis and characterization of N ‐phenylated aromatic polyamides from N ‐silylated dianilino compounds and aromatic diacid chlorides
1987; Wiley; Volume: 25; Issue: 9 Linguagem: Inglês
10.1002/pola.1987.080250914
ISSN1099-0518
AutoresYoshiyuki Oishi, Masa‐aki Kakimoto, Yoshio Imai,
Tópico(s)Synthesis and characterization of novel inorganic/organometallic compounds
ResumoAbstract N ‐Phenylated aromatic polyamides of high molecular weights were synthesized by the hightemperature solution polycondensation of N,N ′ ‐di(trimethylsilyl)‐substituted dianilino compounds derived from p ‐dianilinobenzene, bis(4‐anllinophenyl) ether, and α,α′‐dianilino‐ p ‐xylene, with isophthaloyl and terephthaloyl chloride. Almost all of the N ‐phenylated polyamides were amorphous, and soluble in a variety of organic solvents including dimethylformamide, m ‐cresol, and chloroform. Transparent and flexible films of these polymers could be cast from the dimethylformamide solutions. Four wholly aromatic polyamides had glass transition temperatures in the range of 195–255°C, and began to lose weight around 400°C in air.
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