首页>
外国专利>
Brief description of the catalysts of polymerization of olefins spherical. Application of the catalyst obtained at the polymerization of olefins.
Brief description of the catalysts of polymerization of olefins spherical. Application of the catalyst obtained at the polymerization of olefins.
展开▼
机译:球形烯烃聚合催化剂的简要说明。在烯烃聚合中获得的催化剂的应用。
展开▼
页面导航
摘要
著录项
相似文献
摘要
1. A process for the treatment of a spherical catalyst for the polymerization of olefins, containing at least one transition metal, a magnesium compound and a halogen, characterized in that ethylene is prepolymerized in the presence of a cocatalyst selected from the alkyl aluminiums and at least partially in suspension, to a degree of prepolymerization suitable for the process of polymerization in suspension or in the gaseous phase in which the prepolymer will subsequently be used, a sphere protector which is the product of the reaction between alkyl aluminium and an electron donor being associated with the various components at the latest after prepolymerization.
展开▼