
Caprolactam (CPL) is an organic compound with the formula (CH2)5C(O)NH. This colourless solid is a lactam or a cyclic amide of caproic acid. Approximately 4.5 billion kilograms are produced annually. Caprolactam is the precursor to Nylon 6, a widely used synthetic polymer. ==Synthesis and production== Caprolactam was first described in the late 18...
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http://en.wikipedia.org/wiki/Caprolactam

<chemical> Hexahydro-2h-azepin-2-one. Cyclic amide of caproic acid used in manufacture of synthetic fibres of the polyamide type. Can cause local irritation. ... Chemical name: 2H-Azepin-2-one, hexahydro- ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973

a chemical intermediate used in the manufacture of polyamide (nylon).
Found on
http://www.textilesintelligence.com/glo/index.cfm?SECTION=C
No exact match found.