Amorphous Semiaromatic nylon

Prevost[72] prepared single phase, amorphous blends of amorphous semiaromatic nylons and semicrystalline nylons. The semiaromatic nylon was obtained via two steps. The 2-melhyl-l,5-pentamethylene diamine salt of (isophthalic and terephthalic)acid was first prepared by introducing 18,635.5 g 2-methyl-1,5-penlametltylene diamine, 5,128.5 g isophthalic acid, and 20,513.9 g terephthalic acid. Then polycondensation of the salt was carried out in an autoclave. The semiaromatic nylon thus obtained was melt blended with nylon-6,6 at 280 °C. The blend exhibited good resilience, as given in Table 6. 

Table 6. Resilience of blends of amorphous semiaromatic nylon and nylon-6,6...

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