Patent ID: 8609571
Filing Date: 2013-12-17
Classification: C08F,Y02P

Abstract:
1. A method for preparing a solid catalyst for polymerization of polypropylene, comprising: a) reacting a magnesium halide compound with alcohol and then adding a phthalic acid compound thereto to prepare a magnesium compound solution; b) mixing an aliphatic or alicyclic hydrocarbon solvent with an aromatic hydrocarbon solvent to prepare a mixed solvent, dispersing a titanium compound in the mixed solvent, and then reacting the titanium compound dispersed with the magnesium compound solution prepared in step a), and heating to produce a support; and c) reacting the support containing the titanium compound used in step b) and an electron donor to obtain a solid product, wherein the aliphatic or alicyclic hydrocarbon solvent in step b) is mixed at a ratio in a range from 0.2 to 3 moles per mole of the aromatic hydrocarbon solvent.