Stephanie Kwolek, DuPont Chemist Who Created Kevlar, Dies

Stephanie Kwolek, the DuPont Co. scientist whose research on polymers in the 1960s led to the creation of Kevlar, the light, super-strong synthetic fabric used in bulletproof vests and body armor credited with saving thousands of lives, has died. She was 90.

Kwolek died on June 18 in the Compassionate Care Hospice Unit at St. Francis Hospital in Wilmington, Delaware, Edward J. Adams, a DuPont spokesman, said in an e-mail.