𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Preparation of poly(amide-imide)s derived from biphenyltetracarboxylic dianhydrides

✍ Scribed by Akinori Shiotani; Masafumi Kohda

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
179 KB
Volume
63
Category
Article
ISSN
0021-8995

No coin nor oath required. For personal study only.

✦ Synopsis

Four new diimide-dicarboxylic acids (I-IV) were prepared by condensation of s-or a-BPDA with para-or meta-aminobenzoic acid. A series of aromatic poly(amideimide)s containing these diimide-dicarboxylic units was prepared by three methods:

(1) acid chloride method, (2) triphenylphosphite method, and (3) one-pot method. A typical polymer of the series is readily soluble in polar aprotic solvents such as Nmethyl-2-pyrrolidone (NMP), dimethylsulfoxide (DMSO), and pyridine (py) and could be cast into tough and flexible films. These were characterized by inherent viscosity, differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) measurements. The glass transition temperatures of these polymers were in the range of 220-290ЊC, and the 5% weight loss temperatures were 450-500ЊC. Films prepared by casting from polymer solutions exhibited good tensile properties.

πŸ“œ SIMILAR VOLUMES

Preparation of polyimides derived from b
Preparation of polyimides derived from biphenyltetracarboxylic dianhydrides and aromatic diamines bearing alkylene spacers
✍ Akinori Shiotani; Masafumi Kohda πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 157 KB πŸ‘ 2 views

Four series of aromatic polyimides (PIs V-VIII) composed of biphenyltetracarboxylic dianhydrides (BPDAs) and aromatic diamines bearing alkylene spacers were prepared by two methods. Most polymers could be readily prepared in a one-step method for the combination of a-BPDA with ␣,-bis(3-aminophenoxy)

Synthesis and characterization of poly(a
Synthesis and characterization of poly(aryl amide imide)s derived from diphenyltrimellitic anhydride
✍ Hai Bin Zheng; Yu Qi; Zhi Yuan Wang; Xi Gao Jian πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 133 KB πŸ‘ 1 views

The synthesis and characterization of a series of novel poly(aryl amide imide)s based on diphenyltrimellitic anhydride are described. The poly(aryl amide imide)s, having inherent viscosities of 0.39 -1.43 dL/g in N-methyl-2-pyrrolidinone at 30Β°C, were prepared by polymerization with aromatic diamine

Preparation and characterization of poly
Preparation and characterization of poly(imide-amide)s by interfacial condensation
✍ Yaw-Terng Chern πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 479 KB πŸ‘ 2 views

## SYNOPSIS A series of poly(imide-amide)s were synthesized by interfacial condensation of carbomethoxy-iso/terephthaloyl chlorides (I) with aromatic diamines and polycyclic aliphatic diamines. Carbomethoxy-iso/terephthaloyl chlorides, containing approximately 50% para isomer and 50% meta isomer,

The preparation of perfectly alternating
The preparation of perfectly alternating poly(amide-imide)s via amide unit containing new diamine
✍ Γ–zdemir Γ–zarslan; TΓΌlay Yilmaz; Emel Yildiz; Uwe Fiedeldei; AbdΓΌlkadir Kuyulu; A πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 195 KB πŸ‘ 1 views

The synthesis of N, N-bis(4-amino-4-biphenylene) isophthalamide (BABPI) and its applicability as a new diamine for the preparation of a series of new, high T g , perfectly alternating poly(amide-imide)s is described. BABPI was synthesized from the catalytic reduction of the corresponding dinitro com