✦ LIBER ✦

A facile synthesis of polyamides from aromatic diisocyanates and dicarboxylic acid catalyzed by Lewis acids

✍ Scribed by Yen Wei; Xinru Jia; Danliang Jin; Franklin A. Davis; William E. Starner

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 316 KB
Volume: 17
Category: Article
ISSN: 1022-1336
DOI: 10.1002/marc.1996.030171208

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Aromatic polyamides were prepared by an AlCl~3~ or HCl‐catalyzed polymerization of toluene diisocyanate or methylenebis(phenyl isocyanate) with adipic acid at low temperatures (≤100°C) in a short reaction time (3–4 h). The intrinsic viscosity of the polymers was approximately 1.1 dL/g as determined at 25°C with m‐cresol as solvent, indicating that the polyamides obtained by this method have relatively high molecular weights. The polymers exhibit high glass transition temperatures and good thermal stability.

📜 SIMILAR VOLUMES

Synthesis and characterization of novel

Synthesis and characterization of novel silane-containing aromatic polyamides from bis(p-aminophenoxy)diphenylsilane and aromatic dicarboxylic acids

✍ Der-Jang Liaw; Dung-Lang Ou 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 404 KB 👁 2 views

A new silane-containing diamine, bis(p-aminophenoxy)diphenylsilane (BAPPS) (I), was prepared by the condensation of p-aminophenol with dichlorodiphenylsilane. A series of silane-containing aromatic polyamides was prepared by the direct polycondensation of BAPPS with various aromatic dicarboxylic aci

Synthesis and properties of new semifluo

Synthesis and properties of new semifluoroalkylene-containing aromatic-aliphatic polyamides derived from aromatic diamines and semifluoroaliphatic dicarboxylic acids

✍ Masaru Yoneyama; Kaori Yamazaki; Masa-aki Kakimoto; Yoshio Imai 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 57 KB 👁 2 views

Synthesis and characterization of N-benz

Synthesis and characterization of N-benzoylated wholly aromatic polyamides from 4,4′-oxydianilinobis(benzimidoyl) chloride and aromatic dicarboxylic acids

✍ Yasuo Saegusa; Takehiro Tomita 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 40 KB 👁 2 views

Synthesis and properties of aromatic pol

Synthesis and properties of aromatic polyamides derived from 2,6-bis(4-aminophenoxy)naphthalene and various aromatic dicarboxylic acids

✍ Chin-Ping Yang; Sheng-Huei Hsiao; Chun-Cheng Yang 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 181 KB 👁 2 views

2,6-Bis(4-aminophenoxy)naphthalene (2,6-BAPON) was synthesized in two steps from the condensation of 2,6-dihydroxynaphthalene with p-chloronitrobenzene in the presence of potassium carbonate, giving 2,6-bis(4-nitrophenoxy)naphthalene, followed by hydrazine hydrate/Pd-C reduction. A series of new pol

Synthesis and properties of aromatic pol

Synthesis and properties of aromatic polyamides derived from 1,7-bis(4-aminophenoxy)naphthalene and various aromatic dicarboxylic acids

✍ Chin-Ping Yang; Jiun-Hung Lin 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 557 KB

## SYNOPSIS A series of novel bis(phen0xy)naphthalene-containing polyamides having inherent viscosity up to 2.02 dL/g were synthesized by the direct polycondensation of the diamine 1,7bis(4-aminophenoxy)naphthalene with various aromatic dicarboxylic acids in N-methyl-8-pyrrolidone (NMP) using trip

Synthesis and properties of new halogen-

Synthesis and properties of new halogen-substituted polyamides from 5-halo-m-phenylenediamines and both aliphatic and aromatic dicarboxylic acids

✍ Masa-Aki Kakimoto; Masaru Yoneyama; Yoshio Imai 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 117 KB 👁 2 views