Borden's process for making sweetened condensed milk enabled the dairy product to be transported and stored without refrigeration, and for longer periods than fresh milk. After returning to the New York area to market another product, he set up factories for condensed milk in Connecticut, and later in New York and Illinois. Demand was high for his product by the Union Army during the American Civil War. His New York Condensed Milk Company changed its name to Borden Dairy Co. after his death.