Sinochem New Network News On February 28th, the preparation process of silica-supported titanium-magnesium catalyst developed by the China Petroleum and Petrochemical Research Institute won the national invention patent authorization. The technology has the advantages of high polymerization activity, high bulk density of polymer products, and less fine powder, and can be used to produce high-quality polyethylene resins.
The patented technology uses silica gel with a large specific surface area to modify the silica gel with at least one halogen atom-containing silica gel and at least one halogen atom-containing electron donor compound modifier, and then the titanium compound and the magnesium compound The reaction product of the electron donor and the electron donor is supported on the treated silica gel, and alkyl aluminum is used as a cocatalyst for the gas-phase fluidized bed polymerization of ethylene, thereby improving the activity of the catalyst, hydrogen sensitivity and copolymerization performance.
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