Carothers 66
Wallace Carothers’ team polymerised hexamethylene diamine + adipic acid.
Nylon · Carothers’ polyamide — stockings, tyre cord, climbing rope and a melt-drip fire personality.
Milestones in order. This is history, not a weekly activity grid.
Darker cells mean a higher score for this topic on that metric.
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Declared reaction class in this atlas: combustible, melt-drip. Assemblies still need resistance tests.
Thermal mark 30/100 versus the atlas. Conductivity note: low.
~1.14 g/cm³
Origin story: DuPont 1935–38 (United States).
Circularity mark 32/100 — editorial, route-specific.
PA6 ~220 °C; PA66 ~260 °C
heat 46 · fire 26
Nylon did not arrive as a finished commodity. DuPont 1935–38 around United States still explains who makes it and which tests it sits in.
Ten dated points, five eras and three milestones below are the spine — not a complete industrial history.
Wallace Carothers’ team polymerised hexamethylene diamine + adipic acid.
Toothbrush bristles then stockings.
Nylon stockings as spectacle.
Military demand ate civilian stockings.
Caprolactam route in Germany — today’s volume nylon.
Nylon vs PET vs rayon vs later aramid/steel.
BCF nylon owned US carpets for a generation.
High-tenacity PA66 fabrics.
Still mostly fossil.
ECONYL-type loops for PA6.
Wallace Carothers’ team polymerised hexamethylene diamine + adipic acid.
Nylon stockings as spectacle.
Caprolactam route in Germany — today’s volume nylon.
BCF nylon owned US carpets for a generation.
Still mostly fossil.
Military demand ate civilian stockings.
BCF nylon owned US carpets for a generation.
ECONYL-type loops for PA6.
Knowing this timeline is how to read a mill certificate without treating Nylon as timeless.
Seed-hair cellulose that dressed the industrial revolution — still the comfort fibre of daily wear.
Overall 44 🐑Crimped keratin that traps still air — suiting, carpets and a quietly decent fire story among apparel fibres.
Overall 53 🦋A kilometre-class animal filament — luxury cloth, sutures and a template for bio-inspired fibres.
Overall 41 🎽The dominant apparel polymer — bottle-grade PET spun into staple that dries fast and sheds microfibres.
Overall 49 🦺Aromatic polyamide pulps and filaments — ballistic packs, hot-gas filtration and asbestos replacement.
Overall 62