## 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: Polycondensations 1,2,5,6-tetraaminoanthraquinone with some tetrachloroquinoxaline compounds
✍ Scribed by Banihashemi, A. ;Marvel, C. S.
- Book ID
- 104535506
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1970
- Tongue
- English
- Weight
- 601 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0449-296X
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✦ Synopsis
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′‐diquinoxalyl sulfone. The polycondensations were carried out in solution and in melt. The inherent viscosities of polymers were in the range of 0.1‐0.44. These polymers were highly colored, showed good thermal stability and were soluble in concentrated sulfuric acid and methanesulfonic acid. The structures of the polymers were established by comparison with model compounds.
📜 SIMILAR VOLUMES
## 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