in the 20th century, dupont developed many polymers such as vespel, neoprene, nylon, corian, teflon, mylar, kevlar, zemdrain, m5 fiber, nomex, tyvek, sorona and lycra. dupont developed freon (chlorofluorocarbons) for the cooling industry and later, more environmentally friendly refrigerants. it developed synthetic pigments and paints including chromaflair.