Nylon is a petroleum-based synthetic fabric invented in the 1930s as a silk alternative by Dupont Chemical Company. Today’s nylon carpets are made from a newer generation of the product called “Nylon 6” or “Nylon 6,6.” These fibers are engineered to be even more durable, resist abrasive wear damage and offer almost a lifetime resistance to stains. Nylon 6/6,6 carpets can be pricey, but they’re perfect for any room — especially places where stains are likely to occur.