Shandong Haihua has been granted an invention patent for \"A method for preparing a catalyst based on metal-salen polymers and its applications\"

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Shandong Haihua has been granted an invention patent for \"A preparation method of a catalyst based on metal-salen polymers and its applications\": According to data from the Tianyancha app, Shandong Haihua (000822) has obtained a new invention patent, titled \"A preparation method of a catalyst based on metal-salen polymers and its applications\". The patent application number is CN202510542930.8, and the grant date is August 22, 2025. Patent abstract: The present invention discloses a preparation method and application of a catalyst based on metal-salen polymers, belonging to the field of catalyst preparation technology. In this invention, the salen polymer is in-situ compounded with silica using a surfactant micelle solution to obtain Salen POP@SiO2; subsequently, through a coordination reaction, a catalyst based on a metal-salen polymer, namely M-Salen-POP@SiO2, is prepared. In this catalyst, the metal-salen sites are fully exposed, and the silica is rich in hydroxyl groups that can form hydrogen bonds with carbon dioxide, facilitating the enrichment of reactants. The resulting catalyst, in combination with a temperature-responsive ionic liquid, can catalyze the reaction of carbon dioxide with epoxides to produce cyclic carbonates under solvent-free conditions. Moreover, the catalyst is easy to recover and the product can be purified simply, offering good prospects for application. Since the beginning of this year, Shandong Haihua has obtained 41 new patent approvals, a 70.83% increase compared to the same period last year. Based on the company’s financial figures for the first half of 2025, the company invested 47.7228 million yuan in research and development during this period, representing a 54.82% increase compared to the previous year. According to big data analysis by Tianyancha, Shandong Haihua Co., Ltd. has made investments in 21 companies in total and participated in 351 bidding projects ； In terms of property-related information, there are 18 trademark records and 214 patent records ； In addition, the company holds 31 administrative licenses.