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Nylon 6 or polycaprolactam is a polymer to reproduce the properties of nylon 6,6. It is a semicrystalline polyamide.
N 2041 (OTTO) Nylon 6 Cas 25038-54-4 - used as thread in bristles for toothbrushes, surgical sutures, and strings for acoustic and classical musical instruments, including guitars, sitars, violins, violas, and cellos.