Abstract
A series of aromatic polyamides of high molecular weight was synthesized by low-temperature solution polycondensation of 2,5-bis[(carboxyethyl)thio]-1,4-phenylenediamine with aromatic dicarboxylic acid chlorides. The aromatic polyamides having reactive pendent (carboxyethyl)thio groups had inherent viscosities in the range of 0.57 and 1.66 dl g−1. The precursor polyamides were subjected to thermal cyclization to the corresponding polybenzothiazoles along with the elimination of acrylic acid and water, which were detected by GC-MS analysis of the polyamides. The resulting polymers were characterized as high temperature aromatic polymers.
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Hattori, T., Kagawa, K., Kakimoto, Ma. et al. Novel Two-Step Synthesis of Polybenzothiazoles via Precursor Polyamides Having Reactive Pendant Groups from 2,5-Bis[(carboxyethyl)thio]-1,4-phenylenediamine and Aromatic Dicarboxylic Acid Chlorides. Polym J 26, 930–938 (1994). https://doi.org/10.1295/polymj.26.930
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DOI: https://doi.org/10.1295/polymj.26.930
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