Polyolefins stabilized against oxidation phenomena are obtained by using a process comprising the polymerization of monomers by way of a catalyst prepared by reacting an aluminum alkyl compound, and optionally an electron donor compound, with a solid component comprising a Ti compound and an electron-donor compound supported on magnesium chloride, the polymerization being carried out in the presence of one or more phenolic stabilizers and using, as electron-donor compound in the solid catalyst component, a compound selected from particular classes of ethers.
通过以下工艺可获得抗氧化稳定的聚烯烃:利用铝烷基化合物和电子供体化合物与由 Ti 化合物和电子供体化合物组成并以
氯化镁为载体的固体组分反应制备的催化剂,使单体聚合;聚合反应在一种或多种
酚类稳定剂存在下进行;固体催化剂组分中的电子供体化合物选自特定类别的
醚类化合物。