On October 30th, the metallocene polypropylene catalyst independently developed by ZGSY was tested in a large chemical company in Shandong. It was a complete success and successfully developed two metallocene ultra-high melt mass flow rate polypropylenes. The technical performance of the products reached Indicator requirements.
This is another major breakthrough that ZGSY has made in a short period of time after successfully completing the metallocene catalyst and the industrial test of ultra-high molecular weight polypropylene (mUHMWPP) that catalyzes the polymerization of propylene on October 1, filling the gap in domestic metallocene catalysts. Opened the industrialization road of direct polymerization of oil metallocene catalyst to prepare meltblown polypropylene material.
ZGSY attaches great importance to the R&D and application of metallocene polyolefin catalysts. Xin Shixuan’s expert innovation team and scientific researchers insist on working at the industrial test site day and night. On October 1, China’s first metallocene polypropylene catalyst system was used in a 12 cubic meter liquid phase bulk batch polymerization unit. The industrial trial was successful. Since then, by finely adjusting the partial pressure of hydrogen in the polymerizer, two ultra-high melt mass flow rate metallocene polypropylenes have been successfully developed.
The analysis results show that the catalyst has a series of excellent characteristics such as long active center life, good temperature resistance, and high hydrogen modulation sensitivity; various performance indicators of the product, including catalyst activity, melt mass flow rate, molecular weight, molecular weight distribution, isotacticity Degree, etc., all meet the index requirements. The catalyst system has good polymerization process adaptability and can be industrially produced on similar devices. This provides a reliable process flow and product performance index control parameters for subsequent large-scale production of metallocene polypropylene materials. The success of this industrial test proves that the metallocene catalyst system is an excellent catalyst system for further in-depth development of metallocene polypropylene products from ultra-high molecular weight polypropylene (mUHMWPP) to ultra-high melt mass flow rate polypropylene (mUHMIPP).
Metallocene ultra-high molecular weight polypropylene (mUHMWPP) is the world's first industrial product of ultra-high molecular weight polypropylene. Such products have huge application prospects and market potential in ultra-high-strength membrane materials, high-temperature-resistant lithium battery diaphragm materials, special fiber materials, medical materials, and special application fields that are yet to be developed. The meltblown spun polypropylene material prepared by the direct polymerization of propylene catalyzed by metallocene is the product that China's advanced sanitary and anti-epidemic polypropylene non-woven material market has been waiting for. Now this high-end polypropylene material has finally seen the dawn of localization. This successful industrial test has laid a solid foundation for China's metallocene catalyst technology and new metallocene polyolefin materials to enter the world's first-class level.