How did World War I encourage the development of synthetic detergents in Germany?

During World War I, Germany faced significant shortages of traditional raw materials, which spurred the development of the first synthetic detergents for general use. The primary motivation for this innovation was to conserve available fats so they could be utilized for other essential wartime purposes.1

These early synthetic products were chemicals of the short-chain alkylnaphthalene-sulfonate type, marketed under the name Nekal. They were created by coupling propyl or butyl alcohols with naphthalene, followed by a sulfonation process. While these detergents were only moderately effective at cleaning, they functioned as excellent wetting agents and remain in use today within the textile industry.1