Recently, the fixed assets investment project of the cycloolefin copolymer (COC) unit project of Sinopec (Tianjin) Petrochemical Co., Ltd. was filed.

Basic information of the project: The company's cyclic olefin copolymer project is located within the olefin department. The construction includes 850 tons/year of norbornene units and 1000 tons/year of cyclic olefin copolymer units, as well as supporting facilities such as loading and unloading stations, packaging warehouses, power distribution, and cabinet rooms. The annual operating time is 8000 hours, and the COC production capacity is 1000 tons/year.

The patents related to cyclic olefin copolymers obtained by Sinopec Group include:

A method for preparing cyclic olefin copolymers by continuous polymerization: applied for by China Petroleum&Chemical Corporation and Sinopec Shanghai Petrochemical Co., Ltd., with publication number CN120383694A and application date January 2024. This patent directly obtains a toluene solution of norbornene through distillation, which is a liquid and easier to transport in pipelines. It copolymerizes with the next unit of ethylene to achieve continuous preparation of cyclic olefin copolymers, making it more economical.

Ethylene cyclic olefin copolymer and its preparation method: Applied by China Petroleum&Chemical Corporation and Sinopec (Beijing) Chemical Research Institute Co., Ltd., patent application number CN202111158844.5, authorized on May 7, 2024. The preparation method of the ethylene cyclic olefin copolymer in this patent includes using a catalyst composition to copolymerize ethylene with cyclic olefins, wherein the catalyst composition comprises a metallocene compound, a co catalyst component, and phenol. Through this method, the molecular weight of the polymer can be increased, and the content of cyclic olefins in the copolymer can be increased, thereby increasing the glass transition temperature of the polymer.

A system for preparing polar ethylene cyclic olefin copolymers and its applications, polar ethylene cyclic olefin copolymers and their polymerization methods: Applied by China Petroleum&Chemical Corporation and Sinopec (Beijing) Chemical Research Institute Co., Ltd., application number CN202210345346. X, publication number CN116925275A. This patent relates to a system for preparing polar ethylene cyclic olefin copolymers and its applications, polar ethylene cyclic olefin copolymers and their polymerization methods. The system comprises at least one metallocene compound, at least one alkyl aluminum oxide, at least one organic aluminum compound AlR'mX3-m, ethylene, and a monomer represented by formula I. When used for polar ethylene copolymers, the system not only has high activity, but also can produce high molecular weight and high copolymer monomer content polar ethylene cyclic olefin copolymers.

Ethylene cyclic olefin copolymer and its preparation method: Applied by China Petroleum&Chemical Corporation and Sinopec (Beijing) Chemical Research Institute Co., Ltd., application number CN20231071594.6, public announcement number CN119143911A, application date June 2023. The preparation method of the ethylene cyclic olefin copolymer in this patent includes using a catalyst composition to copolymerize ethylene with cyclic olefins, wherein the catalyst composition comprises a transition metal compound with the structure shown in formula (1) and a co catalyst component, and has the advantage of improving copolymerization activity through this method.Editor/Bian Wenjun