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Portrait of Stephanie Kwolek in caricature style with a background made out of woven material

Stephanie Kwolek

Organic Chemist and Mateirals Inventor
Born: 7-31-1923, New Kengsington, Pennsylvania

Stephanie Kwolek invented poly-paraphenylene terephtalamide, a polymer material that is 5 times stronger than steel on an equal weight basis. The materials, marketed under the Kevlar® brand, have many applications ranging from bicycle tires and racing sails to vests used by police and military personnel.

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