Guangzhou Petrochemical used domestic metallocene catalysts to carry out the pilot production of the first batch of metallocene polypropylene
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On February 18, Guangzhou Petrochemical used a metallocene catalyst developed independently by Sinopec to carry out the first trial production of metallocene polypropylene at its polypropylene plant; this marked the first time that a domestically produced metallocene catalyst was successfully used in a Mitsubishi-process polypropylene plant to produce qualified products. Compared with traditional polypropylene products, metallocene polypropylene features a narrow molecular weight distribution, a low melting point, good spinability, high transparency and gloss, as well as excellent insulating properties. Its products have low levels of precipitates and good sensory properties, allowing it to be widely used in fields such as spinning, non-woven fabrics, food containers, packaging, thin-walled containers, and healthcare. Metallocene polypropylene represents an important direction for the advancement of the polypropylene industry toward higher quality standards. Guangzhou Petrochemical focuses on the research and development of differentiated, high-end polyolefin products; it has established specialized teams to conduct feasibility studies. Through repeated analyses of production challenges, optimization of operational parameters, and the formulation of trial production plans, the company has determined the operating conditions for metallocene catalysts as well as the requirements for raw materials. Relevant modifications are carried out in advance to create favorable conditions for trial production. During the trial production phase, members of the R&D team provided on-site guidance, while the production staff worked closely together to strictly follow the production plan, kept a close eye on key metrics, and increased the frequency of inspections to ensure stable operation of the equipment.
I. Advantages of Mitsui’s technology: Polypropylene is an important synthetic material widely used in fields such as plastics, fibers, and packaging. The Mitsui process is an efficient polypropylene production method with the following advantages: 1. High yield: Compared to traditional polymerization processes, the Mitsui process yields more product. This is because this process not only allows for the dispersion of the finished polymer, but also enables multiple processing steps to be carried out simultaneously in a single reactor, thereby achieving efficient production. 2. High stability: The reactor system in the Mitsui process is independent, with enhanced connections between the reactors; as a result, when one reactor fails, the others can continue to operate, ensuring the stability of production. 3. Good product quality: Mitsui’s multi-stage metering formulation enables a higher degree of polymerization and reduces impurity levels, resulting in better quality of the final product.