US 6,784,133 B2Granted

Method for preparing catalyst for olefin polymerization

AssigneeSamsung Atofina Co. Ltd.

InventorsIl Seop Kim, Moon Young Shin, Ki Su Ro

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Abstract

Disclosed is a preparation method of titanium catalyst for olefin polymerization, the method comprising (1) preparing magnesium compound solution by resolving non-deoxidative magnesium halide and IIIA group atom compound in a solvent mixture of cyclic ether, at least one alcohol, phosphorus compound and organosilane with or without hydrocarbon solvent; (2) reacting said magnesium compound solution with titanium compound, silicon compound, tin compound or mixture thereof to produce a support; and (3) reacting said support with titanium compound and electron donor to produce solid complex titanium catalyst, wherein the particle size and particle size distribution f said catalyst are regulated by controlling solubility of the reactants in said steps (2) and/or (3).

Claims13

Dependent claims

A method of preparing a titanium catalyst for olefin polymerization, said method comprising

(1) preparing a magnesium compound solution by dissolving a magnesium halide having no reducing ability and a group IIIA element compound in a solvent mixture comprising the following:
(a) a cyclic ether, (b) an alcohol, (c) a phosphorus compound, and (d) an organosilane;
(2) contacting said magnesium compound solution with a reactant selected from the group consisting of a titanium compound, a silicon compound, or a tin compound, or a mixture thereof, and reacting said magnesium compound solution with said reactant, or mixture thereof, to produce a supporter;
and
(3) reacting said supporter with a titanium compound and an electron donor to produce a solid complex titanium catalyst having a particle size, wherein said particle size is regulated by controlling the solubility of said reactant of step (2) and/or said titanium compound and electron donor of step (3).

2 more elements

Dependencies are inferred from the claim text.