Synthesis of polyamides by the polyaddition of bisimidazoline with dicarboxylic acids
- 1 May 1967
- journal article
- research article
- Published by Wiley in Journal of Polymer Science Part A-1: Polymer Chemistry
- Vol. 5 (5) , 1129-1135
- https://doi.org/10.1002/pol.1967.150050518
Abstract
N,N′‐Dipropionylethylenediamine was synthesized by the ring‐opening addition reaction of 2‐ethyl‐2‐imidazoline with propionic acid at 220°C. By applying this reaction to polymerization, polyamides were synthesized by the ring‐opening polyaddition reaction at 220°C. of 1,4‐bis(imidazoline‐2‐yl)butane with adipic acid, succinic acid, sebacic acid, and terephthalic acid. The reaction product of 1,4‐bis(imidazoline‐2‐yl)butane with adipic acid, which was proposed to be nylon 26, was compared with an authentic sample of nylon 26 and shown to possess a very similar infrared spectrum and melting point.Keywords
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