Polyurethane is a versatile and durable material that can replace many other materials and is used in a wide range of applications from toys to airplanes. It comes in many forms from hard to soft and is used to improve the properties of materials like durability, flexibility, and resistance to water and oil. Modern textile finishing methods use mechanical and chemical processes to make fabrics more functional, practical, easy to care for, and attractive by improving properties like crease resistance, water and stain resistance, and durability.