An example is para red, synthesized by the diazotization of para-nitroanilne and
then coupling with beta-naphthol:
Imperial Color Works showcased its products at the National Exposition of Chemical Industries held in September 1918 in New York.
At this time Imperial was both a major supplier of fine quality wallpapers and
a leading supplier of pigment colors to the paint, varnish, plastic, printing ink, and synthetic fiber industries.
Periodic Table Database | Chemogenesis