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Synthesis and properties of aromatic polyamides from 2,7-triptycenediamine

✍ Scribed by Yoshio Kasashima; Takuya Kaneda; Go Saito; Fumihiko Akutsu; Kiyoshi Naruchi; Masatoshi Miura

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
246 KB
Volume
195
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Aromatic polyamides were synthesized by the low‐temperature solution polycondensation of 9,10‐dihydro‐9,10‐o‐benzeno‐1,5‐anthracenediamine (2,7‐triptycenediamine) with aromatic diacyl dichlorides. All the polycondensations proceeded in quantitative yields. The obained aromatic polyamides have high inherent viscosities (ca. 1,04–3,24 dL/g). They are soluble in various organic solvents such as 1‐methyl‐2‐pyrrolidone (NMP). The polyamides show high glass transition temperatures (T~g~ ≈ 337–370°C) and high decomposition temperatures (ca. 446–486°C at 5% weight loss). In particular, the polyamide prepared from the diamine and 4,4′‐sulfonyldibenzoyl dichloride not only was soluble in dimethyl sulfoxide, N,N‐dimethylformamide, hexamethylphosphoric triamide, NMP, N,N‐dimethylacetamide and pyridine, but also showed high T~g~ (370°C).

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