Nylon (polyamide) is a synthetic polymer first produced in 1935 at DuPont. Nylon was first used in 1938 for the bristles on toothbrushes. In 1940, it provided fabric for women's stockings (called nylons). It substituted for silk.
Nylon fibers are now used in carpets, guitar strings, racket strings, fishing lines and pantyhose.