首页>
外国专利>
Mixed metallocene catalyst system containing a large amount of built-in comonomer and catalyst embedded catalyst comonomer small amount
Mixed metallocene catalyst system containing a large amount of built-in comonomer and catalyst embedded catalyst comonomer small amount
展开▼
机译:包含大量内置共聚单体和少量催化剂嵌入的催化剂共聚单体的混合茂金属催化剂体系
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention provides polymerization catalyst compounds, catalyst systems including these catalyst compounds, and to their use in the polymerization of ethylene and at least one comonomer. In particular, the invention provides a catalyst system comprising a poor comonomer incorporating catalyst compound and a good comonomer incorporating catalyst compound. Preferably, the low comonomer incorporating catalyst compound is a metallocene containing at least one substituted or unsubstituted fused ring cyclopentadienyl based ligand which is substantially directed to the front of the molecule, contains a long bridging group, or which contains a methyl substitution pattern which correlates to poor comonomer incorporation. The invention also provides methods of selecting the poor comonomer incorporating metallocene to pair with the good comonomer incorporating metallocene to produce polymers that are easy to process into a variety of articles, especially polyethylene based film, having enhanced properties.
展开▼