The present invention relates to a solid catalyst component for the polymerization of olefins CH
2
═CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from γ-butyrolactone derivatives of a particular formula. Said catalyst components, when used in the polymerization of olefins and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.
本发明涉及一种用于聚合烯烃
CH2═CHR(其中R为氢或1-12个碳原子的碳氢基团)的固体催化剂组分,包括Mg、Ti、卤素和从特定公式的
γ-丁内酯衍
生物中选择的电子给体。当在聚合烯烃,特别是
丙烯的聚合中使用该催化剂组分时,能够高产高异构指数聚合物,表现为高二
甲苯不溶性。