Abstract
AbstractThe synthetic route to 1,2‐bis(4‐aminocyclohexyl)ethane from toluene via p‐nitrotoluene and p,p′‐dinitrodibenzyl was established. The distribution of geometric isomers was estimated by NMR and fractional recrystallization. Polyamides were synthesized from 1,2‐bis(4‐aminocyclohexyl)ethane and dodecanedioic or sebacic acid. Polymer melting temperatures were varied with isomer compositions. A high content of the trans conformation causes high melting temperatures. Glass transition temperatures of polyamides were in the range of 105–120°C and were less sensitive to isomer compositions.
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