General situation of the development and current situation of polyurethane

The development of polyurethane has gone through more than 70 years , if we count from the synthesis of isocyanate, we have to push it forward almost a century. As early as 1849, German chemist Wurz prepared aliphatic isocyanates. In 1850, German chemist Hoffmann synthesized phenyl isocyanate. However, it was not until 1937 that Dr.…