Characteristics of polyurethane resin

Polyurethane(PU) refers to the urethane group contained in the molecular structure Polymer of group (—NH—COO—). Carbamates are generally obtained by the reaction of isocyanates and alcohols. In addition, polyurea obtained by the reaction of polyisocyanate and polyamine is also classified as polyurethane in a broad sense Adhesivematerials. Since polyurethane was invented by German chemist O.…