Process for preparing solid support for procatalyst suitable for polymerization of olefins

The present invention relates to a process for the preparation of a solid support for a procatalyst suitable for the preparation of a catalyst composition for the polymerization of olefins, the process for the preparation of the solid support comprising reacting a compound R < 4 > zMgX < 4-z > with a silane compound Si (OR < 5 >) < 4-n > (R < 6 >) < n > in a solvent, and mixing the resulting mixture using a mixing device and at a mixing speed to produce a solid support Mg (OR1) xX12-x, the resulting solid support having an average particle size of at most 17 [mu] m, preferably at most 16 or 14 [mu] m, more preferably at most 12 [mu] m. The invention further relates to a solid support, to a process for preparing the procatalyst and to the procatalyst and to a polyolefin obtained using the procatalyst. 本发明涉及一种用于制备用于主催化剂的固体载体的方法，所述主催化剂适用于制备用于烯烃聚合的催化剂组合物，所述用于制备所述固体载体的方法包括使化合物R4zMgX42-z与硅烷化合物Si(OR5)4-n(R6)n在溶剂中反应，并且使用混合装置并且在一定的混合速度下将所得混合物混合以产生固体载体Mg(OR1)xX12-x，所述获得的固体载体具有至多17μm、优选地至多16或14μm、更优选地至多12μm的平均粒度。本发明进一步涉