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Polymers containing anthraquinone units: Polyimidazoles and polypyrrolones from 1,2,5,6-tetraaminoanthraquinone

✍ Scribed by Pense, Rolf ;Marvel, C. S.

Book ID
104535504
Publisher
Wiley (John Wiley & Sons)
Year
1970
Tongue
English
Weight
433 KB
Volume
8
Category
Article
ISSN
0449-296X

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✦ Synopsis

Abstract

1,2,5,6‐Tetraaminoanthraquinone has been condensed with isophthalaldehyde and terephthalaldehyde and their bisulfite addition compounds to yield new heat‐stable polymers. It has also been condensed with pyromellitic anhydride to give the pyrrolone. The highest viscosities were obtained in polymers prepared with acid catalysts. The polymers were nearly all soluble in concentrated sulfuric acid but not in organic solvents. Those soluble in sulfuric acid could also be solubilized by reduction with sodium dithionite and potassium hydroxide in aqueous organic solutions. A few polymers were apparently crosslinked, since they would not dissolve in either sulfuric acid or in base on reduction. Weak fibers were obtained by spinning the reduced alkaline solutions of the polymers into aqueous acid.

📜 SIMILAR VOLUMES

Polymers containing anthraquinone units:
Polymers containing anthraquinone units: Polymers from 1,2,5,6-tetraaminoanthraquinone
✍ Bracke, William ;Marvel, C. S. 📂 Article 📅 1970 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 479 KB

## Abstract A preparation for 1,2,5,6‐tetraaminoanthraquinone was worked out. The reactivity of this compound in nucleophilie substitutions and nucleophilic additions was studied. Polymers were made by condensation with pyromellitic anhydride, terephthaloyl chloride, and isophthaloyl chloride. The

Polymers containing anthraquinone units:
Polymers containing anthraquinone units: Polycondensations 1,2,5,6-tetraaminoanthraquinone with some tetrachloroquinoxaline compounds
✍ Banihashemi, A. ;Marvel, C. S. 📂 Article 📅 1970 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 601 KB

## Abstract New ladder and partial ladder aromatic heteropolymers have been synthesized from 1,2,5,6‐tetraaminoanthraquinone, 2,3,7,8‐tetrachloro‐1,4,6,9‐tetraazaanthracene, 2,2′‐3,3′‐tetrachloro‐6,6′‐diquinoxaline, 2,2′,3,3′‐tetracholoro‐6,6′‐diquinoxalyl ether and 2,2′,3,3′‐tetrachloro‐6,6′‐diqui

Polymers containing anthraquinone and qu
Polymers containing anthraquinone and quinoxaline units: Polypyrrolones
✍ Dutt, Prabir K. ;Marvel, C. S. 📂 Article 📅 1970 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 405 KB

## Abstract Four ladder or partial ladder polypyrrolones containing anthraquinone recurring units have been synthesized by condensing the dianhydride of 1,2,5,6‐bis(α,β‐dicarboxyl‐pyrazino)anthraquinone with four different tetraamines, 1,2,4,5‐tetraaminobenzene tetrahydrochloride, 3,3′,4,4′‐tetraam