It is worth looking at Kevlar in some detail, as one of the statements about Kevlar in the syllabus is a little confusing. Kevlar has been known since 1965. It was discovered by Stephanie Kwolek (1923 - 2014), an American chemist of Polish origins, whilst she was working for DuPont. Kevlar (polyparaphenylene terephthalamide) is a polyamide made from condensing 1,4-diaminobenzene with benzene-1,4-dicarbonyl chloride.