The initial discovery of Scotchgard's stain-repellent properties occurred accidentally when a fluorochemical rubber was spilled on a canvas shoe. The substance resisted cleaning, indicating its unique characteristics.

Patsy O'Connell Sherman and Samuel Smith dedicated several years to researching and developing the fluorochemical polymer into a commercially viable product. This involved understanding its chemical properties, optimizing its formulation, and conducting extensive testing.

3M filed a patent application for Scotchgard. The application outlined the chemical composition, manufacturing process, and unique properties of the stain repellent.

Scotchgard was introduced to the market and found initial applications in protecting fabrics, clothing, and upholstery from stains and water damage. Its effectiveness and durability quickly made it a popular product among consumers.

3M expanded the Scotchgard product line to include various formulations and applications, such as carpet protectors, automotive products, and outdoor gear treatments. This diversification increased Scotchgard's market reach and solidified its position as a leading stain repellent brand.

Concerns arose regarding the environmental impact of some of the fluorochemicals used in Scotchgard, specifically perfluorooctane sulfonate (PFOS). In response, 3M voluntarily phased out PFOS-based Scotchgard formulations and developed new, more environmentally friendly alternatives.

3M continues to innovate and develop new Scotchgard products that are both effective and environmentally sustainable. The company is committed to reducing its environmental footprint and addressing concerns related to fluorochemicals.