Mesid Chemical: The new generation of polyurethane foam stabilizer is internationally advanced

Sun Yu, chairman of Mester, said that the project developed a new generation of foam stabilizers suitable for the new generation of polyurethane foaming agents, including zero ozone depletion potential (ODP), low global warming potential (GWP) Rigid foam stabilizers for new polyurethane foaming systems, low odor, high flame retardant flexible foam stabilizers, low volatility (VOC), low fogging (FOG) and high resilience foam stabilizers are in production Technological breakthroughs have been achieved in terms of technology, product technical indicators and material performance improvement, which has improved the technical level of China's polyurethane industry chain and organic silicon industry chain, and promoted the development of the polyurethane foam industry in the direction of low carbon, energy saving, environmental protection and safety.

"This project is the first time that a polyurethane enterprise in my country has successfully passed the structure-activity relationship research and molecular simulation technology, and with application performance as the goal orientation, it has designed and developed a series of functional silicon-carbon-based foam stabilizers with completely independent intellectual property rights." Sun Yu Said that with this new technology, Mesid has completed the design, installation and commissioning of a 6,000-ton/year new generation of polyurethane foam stabilizer production line, and built a 22,000-ton/year green and automated production line for foam stabilizers. The project products have reached or surpassed similar foreign products in terms of key technical indicators, and have replaced the products of multinational companies to become the mainstream in the domestic market, and exported to European and American markets, achieving good economic, social and environmental benefits.

The appraisal committee headed by Jiang Jianchun, an academician of the Chinese Academy of Engineering, believes that this project is the first to establish a database of the relationship between the molecular structure and target performance of silicon-carbon-based polyurethane foam stabilizers, which fills the gap in China; it has developed a fixed-bed continuous preparation process for polysiloxane , the controllable distribution of polysiloxane silicon-hydrogen active sites was realized, and the reaction temperature dropped to 40°C; through process research and development of catalytic systems, the activity and selectivity of the hydrosilylation reaction were significantly improved, and polyurethane foam was realized Solvent-free controllable preparation of stabilizers.

Polyurethane foam stabilizer, also known as foam stabilizer, is a key additive necessary for the production of polyurethane foam. Since 2017, Mesid has undertaken the key research project of the "13th Five-Year Plan" of the polyurethane industry and the scientific and technological achievements transformation project of Jiangsu Province - "development and industrialization of a new generation of polyurethane foam stabilizer", using polysiloxane and allyl Polyether is used as raw material. The project has gone through small test, pilot test, application and industrialization. It took 3 years to complete all project plans. The project applied for a total of 37 Chinese invention patents, 14 of which were authorized, among which "a method for continuously preparing polysiloxane in a fixed-bed reactor" won the 2021 China Patent Excellence Award.
At present, my country is the world's largest producer and user of hydrochlorofluorocarbons (HCFCs), and the polyurethane foam industry is the industry with the most applications of HCFCs in my country. In order to strengthen the replacement of ozone-depleting substances (ODS), according to the Montreal Protocol, HCFCs in my country's polyurethane industry will be completely phased out by the end of 2025. At present, the polyurethane industry is speeding up the development of green foaming agents and auxiliary agents such as foam stabilizers.

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