Polyurethanes were invented back in the 1930s by Professor Dr. Otto Bayer (1902-1982). There are various types of polyurethanes, which look and feel very different from each other. They are used in a diversity of products, from coatings and adhesives to shoe soles, mattresses and foam insulation.

In contrast to other common polymers such as polyethylene and polystyrene, polyurethane refers to a group of polymers. Unlike polyethylene and polystyrene, polyurethanes can be produced from a wide range of starting materials, resulting in various polymers within the same group.

Polyurethane, any of a class of synthetic resinous, fibrous, or elastomeric compounds belonging to the family of organic polymers made by the reaction of diisocyanates (organic compounds containing two functional groups of structure ―NCO) with other difunctional compounds such as glycols.

Polyurethane is a typical thermoset polymer compound characterized by durability, flexibility, toughness, and resistance to abrasion, acids/alkalis, solvents, and weathering. It is formed through a covalent polymerization reaction between a polyol group and an isocyanate group.

Learning how to apply polyurethane can give wood furniture and flooring a glossy, smooth finish while improving its durability. Read on for steps on how to apply polyurethane to furniture, plus tips for getting professional results. The two basic types of polyurethane are oil-based and water-based. Both have different pros and cons.

Polyurethane delivers a durable, protective finish for floors and furniture in your home. This guide covers the different types of polyurethane, explains when to use each one, and shows you how to apply it for a smooth, attractive result.