Journal ArticleDOI
Polyetherimides. I. Preparation of dianhydrides containing aromatic ether groups
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TLDR
In this article, a general synthetic method and characterization of bis(ether anhydride)s, the ether containing aromatic dianhydrides of the following structure, are presented.Abstract:
A general synthetic method and characterization of bis(ether anhydride)s, the ether containing aromatic dianhydrides of the following structure, are presented.
The method involves aromatic nitro-displacement of N-substituted 3- or 4-nitrophthalimide with bisphenoxides to form N-substituted arylene-bis(phthalimido)ethers or bis(ether imide)s. Sixteen structurally different bis(ether imide)s have been prepared and subsequently converted to the corresponding bis(ether anhydride)s. Bis(ether anhydride)s are stable crystalline compounds of a moderate reactivity. Unlike highly reactive dianydrides such as pyromellitic and benzophenonetetracarboxylic dianhydrides bis(ether anhydride)s are semipermanently stable against hydrolysis in the presence of atmospheric moisture.read more
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Synthesis and properties of a bisphenol A based phthalonitrile resin
TL;DR: In this article, a multiple aromatic ether linked phthalonitrile was synthesized and characterized, which exhibited good structural integrity upon heating to elevated temperatures and exhibited excellent thermal properties along with long-term oxidative stability.
Journal ArticleDOI
Low dielectric constants of soluble polyimides based on adamantane
Yaw-Terng Chern,Hann-Chyan Shiue +1 more
TL;DR: In this article, the authors synthesize new adamantane-based polyimides by reacting 1,3-bis[4-(4-aminophenoxy)phenyl]adamantane (4) with various aromatic tetracarboxylic dianhydrides.
Journal ArticleDOI
Recent advances in the development of processable high-temperature polymers1
TL;DR: In this article, a review deals with recent developments in the chemistry of high-temperature polymers that have led to improvements in processability and hightemperature stability, which has found widespread use in aerospace and electronics applications.
Journal ArticleDOI
Synthesis and characterization of highly refractive polyimides from 4,4′-thiobis[(p-phenylenesulfanyl)aniline] and various aromatic tetracarboxylic dianhydrides
TL;DR: An aromatic sulfur-containing diamine 4,4′-thiobis[(p-phenylenesulfanyl) aniline] (3SDA) was synthesized and polymerized with a sulfurcontaining dianhydride 4, 4′]-p-thisulfanyl]diphthalic anhydride and three nonsulfur aromatic tetracarboxylic diaphylic dianhides, respectively to afford four poly(amic acid)s (PAAs) with the inherent viscosities of 0.54-1
Journal ArticleDOI
Synthesis and Properties of Poly(ether imide)s Having Ortho-Linked Aromatic Units in the Main Chain
TL;DR: In this article, the synthesis and characterization of poly(ether imide)s with ortho-linked main-chain units based on the bis(ether anhydride)s derived from catechol and 2,3-dihydroxynaphthalene was demonstrated.