BRIDGED METALLOCENE COMPOUND, OLEFIN POLYMERIZATION CATALYST CONTAINING THE SAME, AND ETHYLENE POLYMER OBTAINED WITH THE CATALYST
申请人:Prime Polymer Co., Ltd.
公开号:US20140114031A1
公开(公告)日:2014-04-24
Metallocene compounds of the invention are useful as olefin polymerization catalysts or catalyst components. Olefin polymerization processes of the invention involve an olefin polymerization catalyst containing the metallocene compound. In detail, the olefin polymerization catalysts can catalyze with high polymerization activity the production of olefin polymers having high melt tension, excellent mechanical strength and good particle properties, and the olefin polymerization processes involve the catalysts. Ethylene polymers according to the invention are obtained by the polymerization processes and have higher processability and easy-opening properties and particularly excellent mechanical strength compared to conventional ethylene polymers. Thermoplastic resin compositions of the invention contain the ethylene polymers. In more detail, shaped articles or films are obtained from the ethylene polymers or the thermoplastic resin compositions containing the ethylene polymers, and laminate films include the films.
According to the invention, a single or plural kinds of bridged metallocene compounds having differing cyclopentadienyl-derived groups afford macromonomers that are a source of long-chain branches and simultaneously catalyze the repolymerization of the macromonomers into olefin polymers having a large number of long-chain branches, small neck-in in the T-die extrusion, small take-up surge and superior mechanical strength. The olefin polymerization catalysts and the polymerization processes can efficiently produce the olefin polymers.
本发明的金属茂化合物可用作烯烃聚合催化剂或催化剂组分。本发明的烯烃聚合工艺涉及含有金属茂化合物的烯烃聚合催化剂。具体而言,该烯烃聚合催化剂可以高效地催化生产具有高熔融张力、优异机械强度和良好颗粒特性的烯烃聚合物,并且该烯烃聚合工艺涉及该催化剂。本发明的乙烯聚合物是通过聚合工艺获得的,与传统的乙烯聚合物相比,具有更高的加工性能和易开口性能,特别是具有优异的机械强度。本发明的热塑性树脂组合物包含乙烯聚合物。更具体地说,从乙烯聚合物或包含乙烯聚合物的热塑性树脂组合物中获得成型件或薄膜,并且层压膜包括薄膜。根据本发明,具有不同环戊二烯基衍生物的单个或多种桥联金属茂化合物提供了长链支链的来源,同时催化了大量长链支链的重聚合成烯烃聚合物,具有大量长链支链、T型模头挤出小颈缩、小收缩和优异的机械强度。该烯烃聚合催化剂和聚合工艺可以高效地生产烯烃聚合物。