Abstract: A method of making a solid catalyst component for production of a polyolefin, including the steps of: a) dissolving a halide-containing magnesium compound in a mixture including alkylepoxide, an organic phosphorous compound, a carboxylic acid or anhydride, and a hydrocarbon solvent to form a homogenous solution; b) optionally treating the homogeneous solution with a halogenating agent; c) treating the homogenous solution with a first titanium halide compound in the presence of a surface modifier and optionally a first electron donor to form a solid precipitate, wherein, if present, the first electron donor is an ether; d) optionally treating the solid precipitate with a second electron donor; and e) treating the solid precipitate with a second titanium halide compound and optionally with a second electron donor to form the solid catalyst component.

Abstract: Solid catalyst particles for use in olefin polymerization, olefin polymerization catalyst systems containing the solid catalyst particles, methods of making the solid catalyst particles and the catalyst systems, and methods of polymerizing and copolymerizing olefins involving the use of the catalyst systems. The method of preparing the solid catalyst particles includes steps of maintaining a mixture of reactants at a temperature of about 5° C. to about 35° C. for at least 2 hours; increasing the temperature of said mixture to a temperature of about 40° C. to about 50° C. over a period of at least 3 hours; and increasing the temperature of said mixture to a temperature of about 80° C. to about 90° C.

Abstract: A method of making a solid catalyst component for production of a polyolefin, including the steps of: a) dissolving a halide-containing magnesium compound in a mixture including alkylepoxide, an organic phosphorous compound, a carboxylic acid or anhydride, and a hydrocarbon solvent to form a homogenous solution; b) optionally treating the homogeneous solution with a halogenating agent; c) treating the homogenous solution with a first titanium halide compound in the presence of a surface modifier and optionally a first electron donor to form a solid precipitate, wherein, if present, the first electron donor is an ether; d) optionally treating the solid precipitate with a second electron donor; and e) treating the solid precipitate with a second titanium halide compound and optionally with a second electron donor to form the solid catalyst component.

Abstract: Solid catalyst particles for use in olefin polymerization, olefin polymerization catalyst systems containing the solid catalyst particles, methods of making the solid catalyst particles and the catalyst systems, and methods of polymerizing and copolymerizing olefins involving the use of the catalyst systems. The method of preparing the solid catalyst particles includes steps of maintaining a mixture of reactants at a temperature of about 5° C. to about 35° C. for at least 2 hours; increasing the temperature of said mixture to a temperature of about 40° C. to about 50° C. over a period of at least 3 hours; and increasing the temperature of said mixture to a temperature of about 80° C. to about 90° C.