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New Technique to Recycle Nylon-6
Nylon-6 can be depolymerized selectively, nearly quantitatively, with no solvent, and at moderate temperatures to recover the monomer, ε-caprolactam, using a readily available lanthanum trisamido catalyst. Similar to unthreading pearls from a chain, the monomers are taken out of one end of the polymer one at a time.