Recently, Hexion has launched a new block material, which provides a series of advantages for polyurethane rigid foam manufacturers. Compared with traditional technology, this material can not only improve fire resistance, but also increase productivity. Moreover, when such polyols react with isocyanates, polyurethane foam insulation materials are produced, which can be widely used in the fields of building insulation, refrigerators and freezers, and industrial insulation. Polyols are the main raw materials for the preparation of polyurethane adhesives, and their properties are also different due to different molecular structures. Polyols with different relative molecular weights and different molecular structures can be used to synthesize polyurethane adhesives with different performance properties. Organic polyol compound is one of the two main materials of polyurethane, and the reaction of the hydroxyl group of polyol molecule with polyisocyanate can produce polyurethane material. There are many varieties of such organic polyol compounds, but in the polyurethane industry, the most common ones are polyether polyols and polyester polyols. Hexion’s unique polyol series is launched under the Resonance? brand, which combines the best performance of traditional polyols, polyester and polyether polyols, and can become a "direct" substitute for these materials in commercial-grade polyurethane foam panels. At present, the industrialized manufacturing technology of general-purpose polyols has long been quite mature, and many domestic manufacturers have formed a certain scale through technology introduction and independent research and development. Especially in recent years, domestic large-scale polyester manufacturers have expanded their production. The varieties and brands of polyester polyols and polyether polyols are basically complete, and the product quality and stability have also been greatly improved. In recent years, great attention has been paid to the flame retardancy of polyurethane foam at home and abroad. The development of flame-retardant polyurethane polyols has also been a hot spot in recent years. The characteristics of Resonance P series and T series polyols include high aromaticity and a series of functions, providing a variety of advantages, including: improved fire resistance, increased flexibility in adjusting catalysts and flame retardant additives, which can simplify formulations and reduce overall system costs; Higher compressive strength; improved dimensional stability, improved production efficiency; and enhanced compatibility with isocyanates, copolyols and additives, resulting in a finer unit structure. Polymer polyol is a kind of polyol containing organic fillers, which can replace inorganic fillers, not only can make polyurethane foam have higher load-bearing capacity and good resilience performance, but also improve the cell structure, physical and mechanical properties of the foam . It is understood that Resonance T series polyols can provide different levels of nitrogen content to achieve high reactivity, so that it can achieve good results in applications such as sprayers and electrical foams. Fast curing is essential. At the same time, the material is non-volatile, which can reduce the emission of volatile organic compounds. In addition to the continuous advent of new varieties of polyester polyols, the polyester process is also developing in the direction of high efficiency, low energy consumption, simple process flow, and continuous operation. The relevant person in charge of Hexion said that the recent accidents around the world have attracted attention to the performance of insulating materials such as fire prevention, smoke and harmful gases, and manufacturers are seeking to improve product safety, mechanical performance and manufacturing efficiency. Hexion's new Resonance brand P-series and T-series polyol product portfolios provide an attractive new alternative to current technology. Since the advent of polyurethane, it has developed rapidly because of its excellent properties. In recent years, the polyurethane industry has developed rapidly in Asia and even in China. Polyurethane as a material can be applied to various fields closely related to people's lives. We can see it in many occasions such as building energy saving, refrigerator insulation, car seats, household bedding, wall coatings, food packaging and so on. In the future, China's polyester polyol industry will have both opportunities and challenges. After the majority of enterprises improve advanced technology and large-scale equipment, they will become the power source for the development of the world's polyurethane industry, and the development of polyester polyols will also reach a higher level.