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Status of metallocene catalyst and its polyethylene products
Pages: 76-80
Year: Issue:  2
Journal: China Synthetic Resin and Plastics

Keyword:  metallocene catalystpolyethylenemetallocene polyethylene;
Abstract: The authors reviewed the development of metallocene catalyst and the industrial status of metallocene polyethylene(mPE). The production technologies, product grade, application fields of mPE at home and abroad and domestic developing status are also summarized in this paper. The metallocene catalysts have high activity, and the molecular structure of polyethylene resin can be defined accurately by using the catalyst. The resultant polyethylene has narrow relative molecular mass distribution. The distribution of short chain branch and long chain branch on the main chain can be controlled from molecular structure by combining constrained geometry catalyst technology and solution polymerization process. There exits big difference in research and production of metallocene catalyst and mPE at home and abroad. Especially the problem of fish eyes in the film which affects its application in this field is not resolved yet,so it is necessary to accelerate developing and producing mPE.
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