Once the liquid urethane has hardened and manufacturers are sure that the tire is absent of any air, they're ready to go. So, what's the point of having your tires filled with dense foam instead ...

Spray foam insulation involves using a liquid polyurethane foam to insulate your home. The foam is applied by professional installers using a spray gun. The material is sprayed on as a liquid ...

Researchers at the Fraunhofer Institute for Applied Polymer Research IAP have developed a foil that changes into polyurethane foam (PU foam) when heated—entirely without health risks.