[Plastic] Domestic metallocene polypropylene technology achieves new breakthroughs

Prepare meltblown spinning material to realize continuous production

Metallocene polypropylene production technology has long been monopolized by foreign companies.

Long-term monopoly by foreign companies

Compared with traditional polypropylene products, metallocene polypropylene has the characteristics of narrow molecular weight distribution, lower melting point, and no soluble short-chain block copolymers.

At present, the global demand for metallocene polypropylene has exceeded 500,000 tons.

Traditional polypropylene products are mainly produced with common catalysts, but metallocene polypropylene needs to be produced with metallocene catalysts.

Successful independent research and development of catalyst

In 2014, China Petroleum and Petrochemical Research Institute and Kazakhstan Petrochemical used the metallocene polypropylene catalyst as a breakthrough point, with the help of the development and industrial application of a new type of polypropylene catalyst in a special sub-project, and conducted joint research on metallocene transparent polypropylene products.

In late June 2017, the carrier metallocene polypropylene catalyst (PMP-01) independently developed by the Petrochemical Institute was used for the first time in the 80,000 tons/year batch liquid phase bulk polypropylene plant of Harbin Petrochemical Corporation to produce highly transparent metallocene.

On October 30, 2020, the metallocene polypropylene catalyst (MPP-S02) independently developed by China Petrochemical Institute was successfully tested in a large chemical company in Shandong.

Breakthrough in continuous production problems

After nearly 7 years of research, Yanshan Petrochemical successfully produced metallocene polypropylene products on March 16, 2018.

On December 16, 2020, the scientific research team of Yangzi Petrochemical Research Institute achieved a new breakthrough in the production process of metallocene polypropylene on the polypropylene pilot plant, and also realized the continuous and stable operation of metallocene polypropylene production.

They researched solutions based on the actual operation of the pilot plant, through technological innovation, and based on system demonstration, pioneered solutions and carried out on-site transformations.

Yangzi Petrochemical will conduct a phased summary of the operation of the pilot plant, further optimize the polymerization process conditions, and carry out the production feasibility evaluation of the industrial plant.

(Keyword: domestic polypropylene)