Sinopec has applied for a patent for an ethylene/（methyl）acrylate copolymer, as well as its preparation method and applications, in order to reduce the investment and operating costs of related facilities

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According to information from the Intellectual Property Office as of May 30, 2025, Sinopec Corporation and Sinopec (Beijing) Research Institute of Chemical Technology have filed a patent application titled “An Ethylene/((Meth)acrylate) Copolymer, Its Preparation Method, and Applications”, with the publication number CN120059013A; the application was submitted in November 2023. The patent abstract indicates that this invention falls within the field of olefin polymerization, and relates to an ethylene/ (meth)acrylate copolymer as well as its preparation method and applications. The copolymer contains 85–95 mol% of structural units derived from ethylene and 5–15 mol% of structural units derived from (meth)acrylates ； The number-average molecular weight of the copolymer is between 2000 and 5500 g/mol ； The proportion of (meth)acrylate units in the main chain of the copolymer is 70 mol% or more. The ethylene/ (meth)acrylate copolymer of the present invention has a high content of comonomers, with a high proportion of these comonomers incorporated into the main chain. It exhibits good solubility in hydrocarbon solvents, and even in aliphatic hydrocarbons. It can be used as a quencher in solution polymerization of olefins, and its sufficient molecular weight ensures that the quencher does not essentially enter the solvent or unreacted monomers during the separation process; thus, there is no need for a separate purification system in the recovery system, which saves on investment and operating costs for the equipment. According to Tianyancha, Sinopec Corporation was established in 2000 and is located in Beijing; it is a company that is engaged in the processing of petroleum, coal, and other fuels. The registered capital of the enterprise is 121,739,689.893 million RMB. According to the big data analysis conducted by Tianyancha, Sinopec Corporation has invested in 254 companies in total, participated in 5,000 bidding projects. In terms of property-related information, there are 45 trademark records and 5,000 patent records; additionally, the company holds 39 administrative licenses. Sinopec (Beijing) Chemical Research Institute Co., Ltd., established in 2021 and located in Beijing, is a company primarily engaged in the manufacturing of chemical raw materials and chemical products. The registered capital of the enterprise is 100 million RMB. According to the big data analysis conducted by Tianyancha, Sinopec (Beijing) Research Institute of Chemical Technology has invested in 4 companies in total, participated in 941 bidding projects. In terms of property-related information, there are 14 trademark records and 1,618 patent records; furthermore, the company holds 937 administrative licenses.