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Catalysts for the preparation of polybenzimidazoles

✍ Scribed by Eui-Won Choe

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
755 KB
Volume
53
Category
Article
ISSN
0021-8995

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## Abstract Several polybenzimidazoles containing cardo groups were prepared: A cardodicarboxylic acid, 9,9‐bis(4‐carboxyphenyl)fluorene, and two cardotetramines, 9,9‐bis(3,4‐diaminophenyl)fluorene and 9,9‐bis(3,4‐diaminophenyl)10‐anthrone. The cardodicarboxylic acid was condensed with aromatic tet

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Polybenzimidazole (PBI)-supported rhodium PBI-Rh(I) catalyst was prepared and characterised by chemical analysis, IR, TGA and X-ray photoelectron spectroscopy. Sodium borohydride was used to produce active species of the catalyst. The anchored catalyst PBI-Rh(I) was found to be effective for the red

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The first heterogeneous catalyst which affords polymerization of substituted acetylenes into readily available high molecular weight polymers is reported. The catalyst (Rh/PBI) has been prepared by supporting di-m-chlorobis(h 4 -cycloocta-1,5-diene)dirhodium(i), [Rh(cod)Cl] 2 , on commercial polyben