Solid catalyst for the polymerization of propylene, and method for preparing same
Provided are a solid catalyst for propylene polymerization and a method for preparing the same, specifically a solid catalyst for propylene polymerization which does not contain any environmentally harmful material and can produce a polypropylene having excellent stereoregularity with a high production yield, and a method for preparing the catalyst.
1. A method for preparing a solid catalyst for propylene polymerization, comprising:
(1) reacting dialkoxy magnesium with titanium halide in the presence of an organic solvent;
(2) adding at least one internal electron donor selected from the bicycloalkene dicarboxylates represented by the following general formula (II) to the product resulted from the above step (1) with increasing the temperature to the range of 60-150° C., and reacting them together,
wherein, R 1 and R 2 , which are same or different, are a linear, branched or cyclic C1-20 alkyl, alkenyl, aryl, arylalkyl or alkylaryl group, respectively; R 3 , R 4 , R 5 and R 6 , which are same or different, are hydrogen, a linear, branched or cyclic C1-20 alkyl, alkenyl, aryl, arylalkyl or alkylaryl group, respectively; and (3) reacting the product obtained from the above step (2) with titanium halide at the temperature of 60-150° C. and washing the resulted product.
2. The method according to claim 1 , wherein the total amount of the internal electron donor used is 0.1-1.0 mole based on 1 mole of the dialkoxy magnesium.