Abstract
New aromatic polyimides containing a tetraphenylnaphthalene unit were synthesized from 1,4-bis(4-aminophenyl)-2,3-diphenylnaphthalene and various aromatic tetracarboxylic dianhydride by the conventional two-step procedure that included ring-opening polyaddition in a polar amide-type solvent and subsequent thermal cyclic dehydration. These polyimides had inherent viscosities of 0.58—1.01 dlg−1 and some polyimides were readily soluble in a wide range of organic solvents such as N,N-dimethylacetamide, N-methyl-2-pyrrolidone, pyridine and m-cresol on heating. The glass transition temperature of the polyimides ranged from 306 to 375°C, and 10% weight loss temperatures were 540—580°C in air.
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Morikawa, A., Hatakeyama, T. Synthesis and Characterization of Novel Aromatic Polyimides from 1,4-Bis(4-aminophenyl)-2,3-diphenylnaphthalene and Aromatic Tetracarboxylic Dianhydrides. Polym J 31, 76–78 (1999). https://doi.org/10.1295/polymj.31.76
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DOI: https://doi.org/10.1295/polymj.31.76