DuPont and the development of nylon
The invention of nylon stands as among the most consequential achievements in the history of American industrial chemistry, and it originated in the research laboratories of the DuPont Company, headquartered in Wilmington, Delaware. When DuPont scientists successfully synthesized the world's first fully synthetic fiber in the 1930s, they fundamentally transformed global manufacturing, consumer culture, and the economy of Delaware itself. The story of nylon is inseparable from the story of DuPont, and both are inseparable from the development of Delaware as an industrial and scientific powerhouse.
History
The DuPont Company, formally known as E. I. du Pont de Nemours and Company, was founded in 1802 along the Brandywine Creek near Wilmington, Delaware, originally as a gunpowder manufacturer. Over the course of the nineteenth century and into the twentieth, DuPont evolved from an explosives company into one of the world's leading chemical conglomerates. This transformation was driven in large part by strategic investments in research and development, a philosophy that would eventually yield nylon.
In the late 1920s, DuPont established a fundamental research program under the leadership of Charles M. A. Stine, a chemist who believed that investing in basic science would eventually produce commercially valuable discoveries. The company hired Wallace Hume Carothers, a brilliant organic chemist who had been teaching at Harvard University, to lead this new initiative. Carothers arrived at DuPont's Experimental Station in Wilmington in 1928, and his work there would change the world. His team began investigating the nature of polymers — long-chain molecules formed through the chemical process of polymerization — and worked to understand and replicate naturally occurring fibers such as silk and wool.
Carothers and his team made significant advances in understanding condensation polymers, a class of polymer formed when molecules link together and release a small molecule, often water, as a byproduct. This foundational work led to a series of experimental fibers. In 1935, Carothers synthesized the compound that would become nylon 6,6, a polyamide formed from hexamethylenediamine and adipic acid. The resulting fiber was strong, elastic, resistant to heat and chemicals, and capable of being drawn into thin, lustrous filaments that closely resembled silk. DuPont recognized the enormous commercial potential of the discovery almost immediately.
The development process following the initial synthesis was intensive and methodical. DuPont engineers and chemists worked for several years to refine the production process, making it suitable for large-scale industrial manufacturing. This required developing entirely new industrial machinery, chemical supply chains, and quality control procedures. The company constructed a dedicated nylon production plant in Seaford, Delaware, which opened in 1939. The Seaford plant, sometimes called the "Nylon Capital of the World," became central to Delaware's industrial identity and employed thousands of workers from the surrounding region for decades.[1]
Economy
The economic impact of nylon on Delaware was immediate and profound. The opening of the Seaford plant represented one of the largest industrial investments in the state's history at the time. The facility provided stable, well-paying manufacturing jobs in a part of Delaware — Sussex County — that had traditionally relied on agriculture and poultry farming. The nylon plant attracted workers from across the Delmarva Peninsula and spurred the growth of supporting industries, retail businesses, and housing development in and around Seaford.
DuPont's dominance in the nylon market during the early decades translated into enormous revenue that flowed back into the company's Wilmington headquarters and, by extension, into the Delaware economy more broadly. The company was, for much of the twentieth century, the largest private employer in the state, and its prosperity directly influenced real estate values, tax revenues, philanthropic giving, and the general standard of living for many Delaware residents. The relationship between DuPont and the state of Delaware was so close that critics and observers occasionally described the state as a "company state," a characterization that underscored the degree to which DuPont's fortunes shaped public life.[2]
The nylon industry also had significant ripple effects on adjacent sectors. Textile mills, apparel manufacturers, and tire producers — nylon cord became an important component in automobile tires — all became customers of DuPont's synthetic fiber. The commercial success of nylon encouraged DuPont to invest further in synthetic materials research, leading eventually to other landmark products including Teflon, Dacron, and Lycra, each of which followed a similar path from Delaware laboratory to global market.
Beyond Delaware's borders, nylon reshaped the American economy and consumer culture. The introduction of nylon stockings in 1940 was a major cultural event, with millions of pairs sold in the first days of availability. During World War II, nylon production was redirected toward military uses including parachutes, ropes, and flak vests, demonstrating the material's strategic value. After the war, production returned to consumer goods, and nylon became embedded in everyday American life across dozens of product categories.
Culture
The development of nylon left a distinct imprint on Delaware's cultural identity. The state has long understood itself as a place where chemistry and industry meet, and nylon is perhaps the most famous single product to emerge from that intersection. The legacy of DuPont's scientific culture — meticulous, methodical, and oriented toward practical application — influenced the values and professional norms of generations of Delaware residents who worked for the company or in industries connected to it.
The Experimental Station in Wilmington, where Carothers conducted his foundational research, became a landmark of American scientific history. The facility continued to operate as a major research campus for DuPont long after nylon's invention, and it remained a symbol of Delaware's capacity for industrial innovation. The story of Wallace Carothers himself is part of Delaware's cultural heritage, though it is also tinged with tragedy: Carothers died in 1937, before nylon's public debut, and did not live to see the global impact of his work.
Delaware has commemorated its nylon heritage through museum exhibits, historical markers, and educational programs. The Hagley Museum and Library, located on the site of the original DuPont powder mills along the Brandywine Creek, preserves extensive archives related to the company's history and has mounted exhibits on the development of synthetic materials including nylon. These cultural institutions serve as a bridge between Delaware's industrial past and the present, helping residents and visitors understand the origins of technologies that are now taken for granted.
The nylon story also intersects with broader questions about the relationship between corporate power, scientific discovery, and public benefit. DuPont's model of funding fundamental research in hopes of long-term commercial returns was unusual for its era and has been studied as a case study in the history of science and technology. Delaware, as the state where this model produced its most famous success, occupies a distinctive place in that broader story.
Notable Residents
Wallace Hume Carothers, though originally from Iowa and educated at various Midwestern institutions before his time at Harvard, spent the most consequential years of his scientific life in Delaware. His tenure at DuPont's Experimental Station in Wilmington from 1928 until his death in 1937 represents among the most productive periods of industrial chemistry research in American history. Carothers is credited not only with inventing nylon but also with advancing the theoretical understanding of polymers in ways that shaped subsequent generations of materials science.
Charles Stine, the DuPont executive who championed the fundamental research program and recruited Carothers, was another figure whose influence extended far beyond Delaware's borders. His conviction that a corporation could benefit from investing in science for its own sake, rather than pursuing only applied research with immediate commercial aims, helped establish a model that other major companies would eventually follow. Stine's role in the nylon story illustrates how institutional vision and individual scientific genius combined to produce transformative outcomes.
The broader community of chemists, engineers, and technicians who worked at DuPont during the mid-twentieth century also represents a distinctive Delaware population. Many of these individuals settled permanently in Delaware, raising families and contributing to civic and professional life in the state. Their collective presence helped establish Delaware's reputation as a center of scientific and technical expertise.